Ophthalmology And Visual Sciences

Chris A. Johnson, MSc, PhD, Dsc

Portrait

Director, Visual Field Reading Center
Professor of Ophthalmology and Visual Sciences

Contact Information

Primary Office: B150  MTF
2501 Crosspark Road
Coralville, IA 52241-3210
Primary Office Phone: 319-356-0384

Office: 11196F PFP
200 Hawkins Dr.
Iowa City, IA 52242

Email: chris-a-johnson@uiowa.edu

Education

PhD, Psychology, Pennsylvania State University
BA, Psychology, University of Oregon
MSc, Psychology, Pennsylvania State University
DSc, State University of New York

Post Doctoral, Ophthalmology Research, University of Florida
Post Doctoral, Ophthalmology Research, University of California

Research Summary

I am currently the director of the Visual Field Reading Center at the University of Iowa. I have skills in the evaluation and interpretation of visual field information, and in determining the relationship between optic disc hemorrhages and visual field loss. I have maintained a long-standing interest in structure-function relationships in glaucoma.

All Publications

Johnson C, Sherman K, Doyle C, Wall M.  A comparison of false-negative responses for full threshold and SITA standard perimetry in glaucoma patients and normal observers.  J Glaucoma.  2013 April 29. 
[PubMed]

Lloyd M, Mansberger S, Fortune B, Nguyen H, Torres R, Gardiner S, Johnson C, Gioffi G.  Features of optic disc progression in patients with ocular hypertension and early glaucoma.  J Glaucoma.  2013. 22(5):343-348.
[PubMed]

Anderson A, Johnson C.  How useful is population data for informing visual field progression rate estimation?.  Invest Ophthalmol Vis Sci.  2013. 54(3):2198-2206.
[PubMed]

Salvetat M, Zeppieri M, Arisi L, Johnson C, Sampaolesi R, Brusini P.  Learning effect and test-retest variability of pulsar perimetry.  J Glaucoma.  2013. 22(3):230-237.
[PubMed]

Wall M, Doyle C, Eden T, Johnson C.  Size threshold perimetry performs as well as conventional automated perimetry with stimulus sizes III, V, and VI for glaucomatous loss.  Invest Ophthalmol Vis Sci.  2013. 54(6):3975-3983.
[PubMed]

Gardiner S, Johnson C, Demirel S.  The effect of test variability on the structure-function relationship in early glaucoma.  Graefes Arch Clin Exp Ophthalmol.  2013. 250(12):1851-1861.
[PubMed]

Wall M, Doyle C, Zamba K, Artes P, Johnson C.  The repeatability of mean defect with size III and size V standard automated perimetry.  Invest Ophthalmol Vis Sci.  2013. 54(2):1345-1351.
[PubMed]

Johnson C.  Answers in a flash: A look at perimetry and guidelines for the proper evaluation of visual field results.  Optometric Management.  2012 July 30. 

Gardiner S, Johnson C, Demirel S.  Factors predicting the rate of functional progression in early and suspected glaucoma.  Invest Ophthalmol Vis Sci.  2012. 53(7):3598-3604.
[PubMed]

Twa M, Parthasarathy S, Johnson C, Bullimore M.  Morphometric analysis and classification of glaucomatous optic neuropathy using radial polynomials.  J Glaucoma.  2012. 21(5):302-312.
[PubMed]

Kymes S, Lambert D, Lee P, Musch D, Siegfried C, Kotak S, Stwalley D, Fain J, Johnson C, Gordon M.  The development of a decision analytic model of changes in mean deviation in people with glaucoma: The COA model.  Ophthalmology.  2012. 119(7):1367-1374.
[PubMed]

Hood D, Raza A, de Moraes C, Johnson C, Liebmann J, Ritch R.  The nature of macular damage in glaucoma as revealed by averaging optical coherence tomography data.  Transl Vis Sci Technol.  2012. 1(1):3.
[Link]

Gardiner S, Demirel S, Johnson C, Swanson W.  Assessment of linear-scale indices for perimetry in terms of progression in early glaucoma.  Vision Res.  2011 August 15. 51(16):1801-10.
[Link]

Anderson A, Johnson C, Werner J.  Measuring visual function in age-related macular degeneration with frequency-doubling (matrix) perimetry.  Optom Vis Sci.  2011 July. 88(7):806-15.
[Link]

Johnson C, Wall M, Thompson H.  A history of perimetry and visual field testing.  Optom Vis Sci.  2011. 88(1):E8-15.
[PubMed]

Gardiner S, Johnson C, Demirel S.  Cup size predicts subsequent functional change in early glaucoma.  Optom Vis Sci.  2011. 88(12):1470-1476.
[PubMed]

Johnson C, Keltner J, Artes P.  Fields of OHTS: The Ocular Hypertension Treatment Study.  Glaucoma Today.  2011. 9:20-23.

Johnson C, Anderson D, Fingeret M, Garway-Heath D, Harwerth R.  Glaucoma: recent discoveries and patient care.  Optom Vis Sci.  2011. 88:2-3.

Sample P, Dannheim F, Artes P, Dietsch J, Henson D, Johnson C, Ng M, Schiefer U, Wall M.  Imaging and Perimetry Society (IPS) Standards and Guidelines.  Optom Vis Sci.  2011. 88(1):4-7.
[PubMed]

McKendrick A, Johnson C.  Temporal Properties of Vision.  2011. 

Johnson C, Wall M.  The Visual Field.  2011. 

Vislisel J, Doyle C, Johnson C, Wall M.  Variability of Rarebit and standard perimetry sizes I and III in normals.  Optom Vis Sci.  2011. 88(5):635-630.
[PubMed]

Gardiner S, Demirel S, Johnson C.  Perimetric indices as predictors of future glaucomatous functional change.  Optom Vis Sci.  2011 January. 88(1):56-62.
[Link]

Artes P, Chauhan B, Keltner J, Cello K, Johnson C, Anderson D, Gordon M, Kass M.  Longitudinal and cross-sectional analyses of visual field progression in participants of the Ocular Hypertension Treatment Study.  Arch Ophthalmol.  2010 December. 128(12):1528-32.
[Link]

Terry A, Paulose-Ram R, Tilert T, Johnson C, Zhang X, Lee P, Saaddine J.  The methodology of visual field testing with frequency doubling technology in the National Health and Nutrition Examination Survey, 2005-2006.  Ophthalmic Epidemiol.  2010 December. 17(6):411-21.
[Link]

O'Leary N, Crabb D, Mansberger S, Fortune B, Twa M, Lloyd M, Kotecha A, Garway-Heath D, Cioffi G, Johnson C.  Glaucomatous progression in series of stereoscopic photographs and Heidelberg retina tomograph images.  Arch Ophthalmol.  2010 May. 128(5):560-8.
[Link]

Kass M, Gordon M, Gao F, Heuer D, Higginbotham E, Johnson C, Keltner J, Miller J, Parrish R, Wilson M.  Delaying treatment of ocular hypertension: the ocular hypertension treatment study.  Arch Ophthalmol.  2010 March. 128(3):276-87.
[Link]

Keltner J, Johnson C, Cello K, Dontchev M, Gal R, Beck R.  Visual field profile of optic neuritis: a final follow-up report from the optic neuritis treatment trial from baseline through 15 years.  Arch Ophthalmol.  2010 March. 128(3):330-7.
[Link]

Berson E, Rosner B, Sandberg M, Weigel-DiFranco C, Brockhurst R, Hayes K, Johnson E, Anderson E, Johnson C, Gaudio A, Willett W, Schaefer E.  Clinical trial of Lutein in patients with retinitis pigmentosa receiving vitamin A.  Arch Ophthalmol.  2010. 128(4):403-411.
[PubMed]

Johnson C.  Detecting functional changes in the patient’s vision - Visual Field Analysis.  Springer.  2010. 

Johnson C.  Five questions concerning improving the utility of visual field testing.  Glaucoma Today.  2010. 8:64-66.

Johnson C.  Learning effects and perimetry.  Optometric Glaucoma Society E-journal.  2010. 5:4-8.

Johnson C.  New progression software for the optic disc and visual field.  Glaucoma Today.  2010. 8:32-36.

Johnson C.  Short-Wavelength Automated Perimetry (SWAP) May Not Predict Glaucoma Conversion.  Glaucoma Today.  2010. 8:49.

Brown R, Humayun M, Johnson C, Latina M, Lewis R, Shields M.  The pathway to medical innovation.  Glaucoma Today.  2010. 8:30-37.

Johnson C, Wilkinson M.  Vision and Driving: The United States.  J Neuro-Ophthalmol.  2010. 30:170-176.

Johnson C.  Visual Fields: visual field test strategies.  Springer.  2010. 

Zeppieri M, Brusini P, Parisi L, Johnson C, Sampaolesi R, Salvetat M.  Pulsar perimetry in the diagnosis of early glaucoma.  Am J Ophthalmol.  2010 January. 149(1):102-12.
[Link]

Wall M, Johnson C, Kardon R, Crabb D.  Use of a continuous probability scale to display visual field damage.  Arch Ophthalmol.  2009 June. 127(6):749-56.
[Link]

Demirel S, Fortune B, Fan J, Levine R, Torres R, Nguyen H, Mansberger S, Gardiner S, Cioffi G, Johnson C.  Predicting progressive glaucomatous optic neuropathy using baseline standard automated perimetry data.  Invest Ophthalmol Vis Sci.  2009 February. 50(2):674-80.
[Link]

Johnson C.  Advanced psychophysical tests for glaucoma.  Elsevier.  2009. 

Schiefer U, Pascual J, Sample P, Edmunds B, Weleber R, Johnson C, Staubach F, Lagreze W, Hoffman E, Pfieffer N, Krapp E, Vonthein R, Paetzold J.  Comparison of the new “German Adaptive Threshold Estimation” (GATE) strategy with conventional full threshold and SITA standard strategies.  Invest Ophthalmol Vis Sci.  2009. 50(1):488-494.
[PubMed]

Johnson C.  Determining progression in glaucoma.  Glaucoma Today.  2009. 7:22-27.

Johnson C.  The decision tree in glaucoma diagnosis: Our knowledge of glaucoma is rapidly expanding. New knowledge about glaucoma can lead to earlier clinical intervention.  Review of Optometry.  2009. 146.3:100-108.

Wall M, Doyle C, Brito C, Woodward K, Johnson C.  A comparison of catch trial methods used in standard automated perimetry in glaucoma patients.  J Glaucoma.  2008 December. 17(8):626-30.
[Link]

Gardiner S, Demirel S, Johnson C.  Is there evidence for continued learning over multiple years in perimetry?.  Optom Vis Sci.  2008 November. 85(11):1043-8.
[Link]

Johnson C.  Frequency Doubling Technology (FDT) perimetry for detection of glaucomatous visual field loss. Effectiveness of the FDT and Humphrey Matrix perimeters.  Glaucoma Today.  2008 October. 

Johnson C.  Occupational psychophysics to establish vision requirements.  Optom Vis Sci.  2008 October. 85(10):910-23.
[Link]

Zeppieri M, Demirel S, Kent K, Johnson C.  Perceived spatial frequency of sinusoidal gratings.  Optom Vis Sci.  2008 May. 85(5):318-29.
[Link]

Spry P, Johnson C, Anderson A, Gunvant P, Fingeret M, Keltner J, Wall M, Werner J.  A Primer for Frequency Doubling Technology (FDT) Perimetry Using the Humphrey Matrix.  Carl Zeiss Meditec;  2008.

Gardiner S, Swanson W, Demirel S, McKendrick A, Turpin A, Johnson C.  A two-stage neural spiking model of visual contrast detectionin perimetry.  Vision Res.  2008. 48(18):1859-1869.
[PubMed]

Fortune B, Zhang X, Hood D, Demirel S, Patterson E, Jamil A, Mansberger S, Cioffi G, Johnson C.  Effect of recording duration on the diagnostic performance of multifocal visual-evoked potentials in high-risk ocular hypertension and early glaucoma.  J Glaucoma.  2008. 17(3):175-82.
[Link]

Johnson C.  Evaluation of visual function.  Lippincott.  2008. 
[Link]

Huang C, Carolan J, Redline D, Tavarati P, Woodward K, Johnson C, Wall M, Keltner J.  Humphrey Matrix perimetry in optic nerve and chiasmal disorders: Comparison with Humphrey SITA Standard 24-2.  Invest Ophthalmol Vis Sci.  2008. 49(3):917-923.
[PubMed]

Johnson C.  Is FDT better than SWAP for the detection of early glaucoma?.  International Glaucoma Review.  2008. 10(2):7-8.

Gardiner S, Demirel S, Johnson C.  Is there evidence for continued learning over multiple years in clinical perimetry?.  Optometry and Visual Science.  2008. 85(11):1043-1048.
[PubMed]

Johnson C, Demirel S.  Psychophysiology of Glaucoma: From form to function.  Humana Press.  2008. 

Tavarati P, Woodward K, Keltner J, Johnson C, Redline D, Carolan J, Huang C, Wall M.  Sensitivity and specificity of the Humphrey Matrix to detect homonymous hemianopsias.  Invest Ophthalmol Vis Sci.  2008. 49(3):924-928.
[PubMed]

Nevalainen J, Paetzold J, Krapp E, Vonthein R, Johnson C, Schiefer U.  The use of Semi-automated Kinetic Perimetry (SKP) to monitor advanced glaucomatous visual field loss.  Graefes Arch Clin Exp Ophthalmol.  2008. 246(9):1331-1339.
[PubMed]

Wall M, Brito C, Woodward K, Doyle C, Kardon R, Johnston C.  Total deviation probability plots for stimulus size V perimetry: A comparison with size III stimuli.  Arch Ophthalmol.  2008. 126(4):473-479.
[PubMed]

Nevalainen J, Krapp E, Petzold J, Mildenberger I, Besch D, Vonthein R, Keltner J, Johnson C, Schiefer U.  Visual field defects in acute optic neuritis – distribution of different types of defect pattern, assessed with threshold-related perimetry, ensuring high spatial resolution.  Graefes Arch Clin Exp Ophthalmol.  2008. 246(4):599-607.
[PubMed]

Johnson C.  What visual field tests should I use in my glaucoma suspects? My patients with manifest glaucoma?.  Slack Incorporated.  2008. 

Keltner J, Johnson C, Cello K, Bandermann S, Fan J, Levine R, Kass M, Gordon M.  Visual field quality control in the Ocular Hypertension Treatment Study (OHTS).  J Glaucoma.  2007 December. 16(8):665-9.
[Link]

Fortune B, Demirel S, Zhang X, Hood D, Patterson E, Jamil A, Mansberger S, Cioffi G, Johnson C.  Comparing multifocal VEP and standard automated perimetry in high-risk ocular hypertension and early glaucoma.  Invest Ophthalmol Vis Sci.  2007 March. 48(3):1173-80.
[Link]

Mansberger S, Edmunds B, Johnson C, Kent K, Cioffi G.  Community visual field screening: prevalence of follow-up and factors associated with follow-up of participants with abnormal frequency doubling perimetry technology results.  Ophthalmic Epidemiol.  2007. 14(3):134-40.
[Link]

Rein D, Wirth K, Johnson C, Lee P.  Estimating quality-adjusted life year losses associated with visual field deficits using methodological approaches.  Ophthalmic Epidemiology.  2007. 14:258-264.

Johnson C.  Flicker Perimetry.  IPS Website.  2007. 
[Link]

Monaco W, Kalb J, Johnson C.  Motion detection in the far peripheral visual field.  Army Research Laboratory Technical Report.  2007. ARL-MR-0684:1-19.

Johnson C.  Short Wavelength Automated Perimetry (SWAP).  IPS Website.  2007. 
[Link]

Brusini P, Johnson C.  Staging functional damage in glaucoma: Review of different classification methods.  Surv Ophthalmol.  2007. 52(2):156-179.
[PubMed]

Johnson C.  The future for assessing functional visual field loss in glaucoma.  Glaucoma Today.  2007. 5:37-39.

Mansberger S, Johnson C, Cioffi G.  The results of screening frequency doubling technology perimetry in different locations of the community.  J Glaucoma.  2007 January. 16(1):73-80.
[Link]

Quinn L, Gardiner S, Wheeler D, Newkirk M, Johnson C.  Frequency doubling technology perimetry in normal children.  Am J Ophthalmol.  2006 December. 142(6):983-9.
[Link]

Newkirk M, Gardiner S, Demirel S, Johnson C.  Assessment of false positives with the Humphrey Field Analyzer II perimeter with the SITA Algorithm.  Invest Ophthalmol Vis Sci.  2006 October. 47(10):4632-7.
[Link]

Levine R, Demirel S, Fan J, Keltner J, Johnson C, Kass M.  Asymmetries and visual field summaries as predictors of glaucoma in the ocular hypertension treatment study.  Invest Ophthalmol Vis Sci.  2006 September. 47(9):3896-903.
[Link]

Keltner J, Johnson C, Anderson D, Levine R, Fan J, Cello K, Quigley H, Budenz D, Parrish R, Kass M, Gordon M.  The association between glaucomatous visual fields and optic nerve head features in the Ocular Hypertension Treatment Study.  Ophthalmology.  2006 September. 113(9):1603-12.
[Link]

Gardiner S, Anderson D, Fingeret M, McSoley J, Johnson C.  Evaluation of decision rules for frequency-doubling technology screening tests.  Optom Vis Sci.  2006 July. 83(7):432-7.
[Link]

Gardiner S, Johnson C, Spry P.  Normal age-related sensitivity loss for a variety of visual functions throughout the visual field.  Optom Vis Sci.  2006 July. 83(7):438-43.
[Link]

Fortune B, Demirel S, Zhang X, Hood D, Johnson C.  Repeatability of normal multifocal VEP: implications for detecting progression.  J Glaucoma.  2006 April. 15(2):131-41.
[Link]

Johnson C.  The two dollar lesson.  Eyenet.  2006 March. 

Johnson C.  Clinical Trial Review.  OGS E-Journal.  2006. 1(2):16-18.

Anderson A, Johnson C.  Comparison of the ASA, MOBS and ZEST threshold methods.  Vision Res.  2006. 46(15):2403-2411.
[PubMed]

Johnson C.  Evaluation of visual field loss in glaucoma: Progression and classification of perimetric damage.  Kugler Publications.  2006. 

Zeppieri M, Johnson c.  Frequency Doubling Technology (FDT) Perimetry.  IPS Web Site.  2006. 
[Link]

Schiefer U, Nowomiejska K, Krapp E, Patzold J, Johnson C.  K-TRAIN - A computer-based interactive training program with an incorporated certification system for practicing kinetic perimetry: evaluation of acceptance and success rate.  Graefe’s Arch Clin Exp Ophthalmol.  2006. 244(10):1300-1309.
[PubMed]

Gardiner S, Demirel S, Johnson C.  Modeling the sensitivity to variability relationship in perimetry.  Vision Res.  2006. 46(11):1732-1745.
[PubMed]

Johnson C.  New developments in perimetry, including SITA, ZEST and TOP.  Kugler Publications.  2006. 

Dolderer J, Vonthein R, Johnson C, Schiefer U, Hart W.  Scotoma mapping by semi-automated kinetic perimetry – The effects of stimulus properties and the speed of subjects’responses.  Acta Ophthalmol Scandinavica.  2006. 84(3):338-344.
[PubMed]

Johnson C.  Update on Short Wavelength Automated Perimetry (SWAP) and Frequency Doubling Technology (FDT) in glaucoma and neuro-ophthalmologic disorders.  Kugler Publications.  2006. 

Johnson C.  Visual field variability.  OGS E-Journal.  2006. 1(2):13.

Gardiner S, Johnson C, Cioffi G.  Evaluation of the structure-function relationship in glaucoma.  Invest Ophthalmol Vis Sci.  2005 October. 46(10):3712-7.
[Link]

Keltner J, Johnson C, Levine R, Fan J, Cello K, Kass M, Gordon M.  Normal visual field test results following glaucomatous visual field end points in the Ocular Hypertension Treatment Study.  Arch Ophthalmol.  2005 September. 123(9):1201-6.
[Link]

Johnson C.  Vision requirements for driver's license examiners.  Optom Vis Sci.  2005 August. 82(8):779-89.
[Link]

Mansberger S, Romero F, Smith N, Johnson C, Cioffi G, Edmunds B, Choi D, Becker T.  Causes of visual impairment and common eye problems in Northwest American Indians and Alaska Natives.  Am J Public Health.  2005 May. 95(5):881-6.
[Link]

Mansberger S, Johnson C, Cioffi G, Choi D, Krishnadas S, Srinivasan M, Balamurugan V, Kim U, Smith S, Wilkins J, Gritz D.  Predictive value of frequency doubling technology perimetry for detecting glaucoma in a developing country.  J Glaucoma.  2005 April. 14(2):128-34.
[Link]

Spry P, Johnson C, Mansberger S, Cioffi G.  Psychophysical investigation of ganglion cell loss in early glaucoma.  J Glaucoma.  2005 February. 14(1):11-9.
[Link]

Anderson A, Johnson C, Fingeret M, Keltner J, Spry P, Wall M, Werner J.  Characteristics of the normative database for the Humphrey Matrix perimeter.  Invest Ophthalmol Vis Sci.  2005. 46(4):1540-1548.
[PubMed]

Johnson C.  Early diagnosis with functional tests: Myths and reality.  Glaucoma Today.  2005. 3:28-31.

Wall M, Johnson C.  Principles and Techniques of the Examination of the Visual Sensory System.  Lippincott, Williams and Wilkens.  2005. 1:83-149.

Cioffi G, Johnson C.  Structural / Functional Relationships in Glaucoma.  Heidelberg Engineering.  2005. 

Fingeret M, Flanagan J, Johnson C, Cavallerano A, Semes L.  “Glaucoma Without Cupping”.  J Am Optom Assoc.  2005. 76:223-224.

Hood D, Zhang X, Rodarte C, Yang E, Ohri N, Fortune B, Johnson C.  Determining abnormal interocular latencies of multifocal visual evoked potentials.  Doc Ophthalmol.  2004 September. 109(2):177-87.
[Link]

Hood D, Ohri N, Yang E, Rodarte C, Zhang X, Fortune B, Johnson C.  Determining abnormal latencies of multifocal visual evoked potentials: a monocular analysis.  Doc Ophthalmol.  2004 September. 109(2):189-99.
[Link]

Fortune B, Zhang X, Hood D, Demirel S, Johnson C.  Normative ranges and specificity of the multifocal VEP.  Doc Ophthalmol.  2004 July. 109(1):87-100.
[Link]

Berson E, Rosner B, Sandberg M, Weigel-DiFranco C, Moser A, Brockhurst R, Hayes K, Johnson C, Anderson E, Gaudio A, Willett W, Schafer E.  Clinical trial of docosahexanoic acid in patients with retinitis pigmentosa on vitamin A treatment.  Arch Ophthalmology.  2004. 122:1297-1305.

Vesti E, Chauhan B, Johnson C.  Comparison of different methods for detecting glaucomatous visual field progression.  The Hague: Kugler Publications.  2004. 

Sample P, Araie M, Chauhan B, Heijl A, Johnson C.  Comparison of methods for measurement of function.  The Hague: Kugler Publications.  2004. 

Johnson C, Spry P.  Cumulative defect (Bebie') curves for frequency doubling technology (FDT) perimetry.  The Hague: Kugler Publications.  2004. 

Fortunate B, Goh K, Demirel S, Novitsky K, Mansberger S, Johnson C, Cioffi G.  Detection of glaucomatous visual field loss using multifocal VEP.  The Hague: Kugler Publications.  2004. 

Johnson C.  Establishing thresholds with Bayesian forecasting.  Review of Optometry.  2004. 

Johnson C, Fingeret M, Iwase I.  Frequency Doubling Technology Perimetry.  The Hague: Kugler Publications.  2004. 

Johnson C.  Frequency doubling technology perimetry for neuro-ophthalmological diseases.  Br J Ophthalmol.  2004. 88(10):1232-1233.
[PubMed]

Berson E, Rosner B, Sandberg M, Weigel-DiFranco C, Moser A, Brockhurst R, Hayes K, Johnson C, Anderson E, Gaudio A, Willett W, Shafer E.  Further evaluation of docosahexanoic acid in patients with retinitis pigmentosa on vitamin A treatment: Subgroup Analysis.  Arch Ophthalmol.  2004. 122:1306-1314.

Fingeret M, Johnson C.  Peripheral visual field testing rarely necessary.  Primary Care Optometry News.  2004. 9:26-28.

Johnson C.  Software upgrades for automated perimetry.  Glaucoma Today.  2004. 2:32-34.

Ennis F, Blachly C, Cioffi G, Mansberger S, Johnson C.  The effect of contour-line drawing criteria on optic disc parameters as measured with the HRT.  The Hague: Kugler Publication.  2004. 

Spry P, Johnson C.  Variability components of standard perimetry.  The Hague: Kugler Publications.  2004. 

Fingeret M, Johnson C.  The new Humphrey Matrix FDT.  Optometric Management.  2003 December 8. 

Anderson A, Johnson C.  Anatomy of a supergroup: does a criterion of normal perimetric performance generate a supernormal population?.  Invest Ophthalmol Vis Sci.  2003 November. 44(11):5043-8.
[Link]

Turpin A, McKendrick A, Johnson C, Vingrys A.  Properties of perimetric threshold estimates from full threshold, ZEST, and SITA-like strategies, as determined by computer simulation.  Invest Ophthalmol Vis Sci.  2003 November. 44(11):4787-95.
[Link]

Anderson A, Johnson C.  Frequency-doubling technology perimetry and optical defocus.  Invest Ophthalmol Vis Sci.  2003 September. 44(9):4147-52.
[Link]

Anderson A, Johnson C.  Frequency-doubling technology perimetry.  Ophthalmol Clin North Am.  2003 June. 16(2):213-25.
[Link]

Keltner J, Johnson C, Cello K, Edwards M, Bandermann S, Kass M, Gordon M.  Classification of visual field abnormalities in the ocular hypertension treatment study.  Arch Ophthalmol.  2003 May. 121(5):643-50.
[Link]

McKendrick A, Anderson A, Johnson C, Fortune B.  Appearance of the frequency doubling stimulus in normal subjects and patients with glaucoma.  Invest Ophthalmol Vis Sci.  2003 March. 44(3):1111-6.
[Link]

Johnson C, Sample P, Zangwill L, Vasile C, Cioffi G, Liebmann J, Weinreb R.  Structure and function evaluation (SAFE): II. Comparison of optic disk and visual field characteristics.  Am J Ophthalmol.  2003 February. 135(2):148-54.
[Link]

Beck R, Moke P, Turpin A, Ferris F, San Giovanni J, Johnson C, Birch E, Chandler D, Cox T, Blair R, Kraker R.  A computerized method of visual acuity testing: Adaptation of the early treatment of diabetic retinopathy study testing protocol.  Am J Ophthalmol.  2003. 135:194-205.

Keltner J, Johnson C, Cello K, Bandermann S, Edwards M, Kass M, Gordon M, The Ocular Hypertension Treatment Study Group .  Classification of visual field abnormalities in the Ocular Hypertension Treatment Study.  Arch Ophthalmol.  2003. 121(5):643-650.
[PubMed]

Vesti E, Johnson C, Chauhan B.  Comparison of different methods for detecting glaucomatous visual field progression.  Invest Ophthalmol Vis Sci.  2003. 44:3873-3879.

Johnson C.  Frequency Doubling Technology (FDT) Perimetry.  Glaucoma Management News.  2003. 1:1,7,8.

Anderson A, Johnson C.  Frequency-doubling technology perimetry.  WB Saunders.  2003. 16(2):213-225.

Spry P, Johnson C, McKendrick A, Turpin A.  Measurement error of visual field tests in glaucoma.  Br J Ophthalmol.  2003. 87(1):107-112.
[PubMed]

Johnson C.  Questions directed to Dr. Johnson in his absence.  Kugler Publications.  2003. 

Johnson C, Sample P, Zangwill L, Vasile C, Cioffi G, Liebmann J, Weinreb R.  Structure and Function Evaluation (SAFE): II. Comparison of optic disc and visual field characteristics.  Am J Ophthalmol.  2003. 135(2):148-154.
[PubMed]

Johnson C.  The use of a visual illusion to detect glaucoma: Frequency Doubling Technology Perimetry.  American Psychological Association Books.  2003. 

Johnson C.  Update on perimetry: New Developments.  Kugler Publications.  2003. 

Budenz D, Rhee P, Feuer W, McSoley J, Johnson C, Anderson D.  Comparison of glaucomatous visual field defects using standard full threshold and Swedish interactive threshold algorithms.  Arch Ophthalmol.  2002 September. 120(9):1136-41.
[Link]

Wilson M, Kosoko O, Cowan C, Sample P, Johnson C, Haynatzki G, Enger C, Crandall D.  Progression of visual field loss in untreated glaucoma patients and glaucoma suspects in St. Lucia, West Indies.  Am J Ophthalmol.  2002 September. 134(3):399-405.
[Link]

Ennis F, Johnson C.  Are high-pass resolution perimetry thresholds sampling limited or optically limited?.  Optom Vis Sci.  2002 August. 79(8):506-11.
[Link]

Fortune B, Bearse M, Cioffi G, Johnson C.  Selective loss of an oscillatory component from temporal retinal multifocal ERG responses in glaucoma.  Invest Ophthalmol Vis Sci.  2002 August. 43(8):2638-47.
[Link]

Johnson C, Sample P, Cioffi G, Liebmann J, Weinreb R.  Structure and function evaluation (SAFE): I. criteria for glaucomatous visual field loss using standard automated perimetry (SAP) and short wavelength automated perimetry (SWAP).  Am J Ophthalmol.  2002 August. 134(2):177-85.
[Link]

Sample P, Goldbaum M, Chan K, Boden C, Lee T, Vasile C, Boehm A, Sejnowski T, Johnson C, Weinreb R.  Using machine learning classifiers to identify glaucomatous change earlier in standard visual fields.  Invest Ophthalmol Vis Sci.  2002 August. 43(8):2660-5.
[Link]

Spry P, Johnson C.  Within-test variability of frequency-doubling perimetry using a 24-2 test pattern.  J Glaucoma.  2002 August. 11(4):315-20.
[Link]

Budenz D, Rhee P, Feuer W, McSoley J, Johnson C, Anderson D.  Sensitivity and specificity of the Swedish interactive threshold algorithm for glaucomatous visual field defects.  Ophthalmology.  2002 June. 109(6):1052-8.
[Link]

Kass M, Heuer D, Higginbotham E, Johnson C, Keltner J, Miller J, Parrish R, Wilson M, Gordon M.  The Ocular Hypertension Treatment Study: a randomized trial determines that topical ocular hypotensive medication delays or prevents the onset of primary open-angle glaucoma.  Arch Ophthalmol.  2002 June. 120(6):701-13; discussion 829-30.
[Link]

Gordon M, Beiser J, Brandt J, Heuer D, Higginbotham E, Johnson C, Keltner J, Miller J, Parrish R, Wilson M, Kass M.  The Ocular Hypertension Treatment Study: baseline factors that predict the onset of primary open-angle glaucoma.  Arch Ophthalmol.  2002 June. 120(6):714-20; discussion 829-30.
[Link]

McKendrick A, Johnson C, Anderson A, Fortune B.  Elevated vernier acuity thresholds in glaucoma.  Invest Ophthalmol Vis Sci.  2002 May. 43(5):1393-9.
[Link]

Johnson C.  Recent developments in automated perimetry in glaucoma diagnosis and management.  Curr Opin Ophthalmol.  2002 April. 13(2):77-84.
[Link]

Johnson C, Keltner J, Cello K, Edwards M, Kass M, Gordon M, Budenz D, Gaasterland D, Werner E.  Baseline visual field characteristics in the ocular hypertension treatment study.  Ophthalmology.  2002 March. 109(3):432-7.
[Link]

Anderson A, Johnson C.  Effect of spatial waveform on apparent spatial frequency.  Vision Res.  2002 March. 42(6):725-32.
[Link]

Turpin A, McKendrick A, Johnson C, Vingrys A.  Performance of efficient test procedures for frequency-doubling technology perimetry in normal and glaucomatous eyes.  Invest Ophthalmol Vis Sci.  2002 March. 43(3):709-15.
[Link]

Turpin A, McKendrick A, Johnson C, Vingrys A.  Development of efficient threshold strategies for frequency doubling technology perimetry using computer simulation.  Invest Ophthalmol Vis Sci.  2002 February. 43(2):322-31.
[Link]

Anderson A, Johnson C.  Effect of dichoptic adaptation on frequency-doubling perimetry.  Optom Vis Sci.  2002 February. 79(2):88-92.
[Link]

Anderson A, Johnson C.  Mechanisms isolated by frequency-doubling technology perimetry.  Invest Ophthalmol Vis Sci.  2002 February. 43(2):398-401.
[Link]

Vesti E, Spry P, Chauhan B, Johnson C.  Sensitivity differences between real-patient and computer-stimulated visual fields.  J Glaucoma.  2002 February. 11(1):35-45.
[Link]

McKendrick A, Cioffi G, Johnson C.  Short-wavelength sensitivity deficits in patients with migraine.  Arch Ophthalmol.  2002 February. 120(2):154-61.
[Link]

Spry P, Johnson C, Bates A, Turpin A, Chauhan B.  Spatial and temporal processing of threshold data for detection of progressive glaucomatous visual field loss.  Arch Ophthalmol.  2002 February. 120(2):173-80.
[Link]

Spry P, Johnson C.  Advances in Automated Perimetry.  2002. XX(10):1-12.

Spry P, Johnson C.  Identification of progressive glaucomatous visual field loss.  Surv Ophthalmol.  2002. 47(2):158-73.
[Link]

Johnson C, Sample P.  Perimetry and Visual Field Testing.  CV Mosby.  2002. 

Demirel S, Johnson C.  Prävalenz und inzidenz der mittels kurzwelliger Blau/Gelb-Perimetrie bestimmten Gesichtsfelddefekte bei Patienten mit okulärer Hypertonie.  Search on Glaucoma.  2002. 10:29-33.

McKendrick A, Johnson C.  Temporal Properties of Vision.  CV Mosby.  2002. 

Johnson C.  Testing Visual Function in Glaucoma.  Thieme Publishers.  2002. 

Kass M, Heuer D, Higginbotham E, Johnson C, Keltner J, Parrish R, Wilson M, Gordon M, The Ocular Hypertension Treatment Study Group .  The Ocular Hypertension Treatment Study: Safety and efficacy of topical ocular hypotensive medication in preventing or delaying the onset of primary open angle glaucoma.  Arch Ophthalmol.  2002. 120:701-713.

Brigell M, Johnson C.  “Visual fields and tiagabine: a quandary.”.  Siezure.  2002. 11:139-140.

Johnson C.  “Work and the Eye” by Rachel North.  Cornea.  2002. 21:437-438.

Fortune B, Johnson C.  Decline of photopic multifocal electroretinogram responses with age is due primarily to preretinal optical factors.  J Opt Soc Am A Opt Image Sci Vis.  2002 January. 19(1):173-84.
[Link]

Savage G, Johnson C, Howard D.  A comparison of non-invasive objective and subjective measurements of the optical density of human ocular media.  Optom Vis Sci.  2001. 78:386-395.

Moke P, Turbin A, Beck R, Holmes J, Repka M, Birch E, Hertle R, Kraker R, Miller J, Johnson C.  Development of a computerized method of visual acuity testing: Adaptation of the Amblyopia Treatment Study Visual Acuity Testing Protocol for Children.  Am J Ophthalmol.  2001. 132:903-909.

Turpin A, Johnson C, Spry P.  Development of a maximum likelihood procedure for Short Wavelength Automated Perimetry (SWAP).  The Hague: Kugler Publications.  2001. 

Johnson C.  Diagnosing and following glaucoma: Frequency Doubling Technology (FDT) Perimetry.  Glaucoma Perspectives in Practice.  2001. 3(1):7.

Spry P, Johnson C, Bates A, Chauhan B.  Discriminatory power of pointwise linear regression for detection of glaucomatous visual field defect progression.  The Hague: Kugler Publications.  2001. 

Fortune B, Johnson C, Cioffi G.  Does the multifocal electroretinogram (mERG) provide a topographic, objective measure of ganglion cell function in glaucoma?.  The Hague: Kugler Publications.  2001. 

Fingeret M, Smith E, Reminick L, Johnson C.  Frequency doubling perimetry as a screening tool in the general ophthalmic elderly population.  Kugler Publications.  2001. 

Spry P, Gibbs M, Johnson C, Howard D.  Frequency Doubling Perimetry using a liquid crystal display.  Am J Ophthalmol.  2001. 131(3):332-338.
[PubMed]

Sample P, Johnson C.  Functional assessment of glaucoma.  J Glaucoma Supplement.  2001. 20((5:Suppl 1)):S49-S52.
[PubMed]

Demirel S, Johnson C.  Incidence and prevalence of Short Wavelength Automated Perimetry (SWAP) deficits in ocular hypertensive patients.  Am J Ophthalmol.  2001. 131(6):709-715.
[PubMed]

Johnson C.  Psychophysical measurement of glaucomatous damage.  Surv Ophthalmol.  2001. 45(Suppl 3):S313-S318.
[PubMed]

Spry P, Johnson C.  Senescent changes of the normal visual field: an age-old problem.  Optom Vis Sci.  2001. 78(6):436-441.
[PubMed]

Vesti E, Spry P, Chauhan B, Johnson C.  Sensitivity differences between real-patient and computer-simulated visual fields.  The Hague: Kugler Publications.  2001. 

Fortune B, Johnson C, Cioffi G.  Variability components of standard automated perimetry and frequency doubling technology perimetry.  Optom Vis Sci.  2001. 784:206-214.
[PubMed]

Spry P, Johnson C, McKendrick A, Turpin A.  Variability components of standard automated perimetry and frequency doubling technology perimetry.  Invest Ophthalmol Vis Sci.  2001. 42(6):1404-1410.
[PubMed]

McKendrick A, Johnson C.  Aliasing for rapidly counterphasing stimuli: a failure to demonstrate an M-cell sampling limit to resolution.  J Opt Soc Am A Opt Image Sci Vis.  2000. 17:1703-1712.

Spry P, Johnson C.  Assessing visual function in clinical practice.  WB Saunders.  2000. 13(3):361-382.

Keltner J, Johnson C, Quigg J, Cello K, Kass M, Gordon M, The Ocular Hypertension Study Group .  Confirmation of visual field abnormalities in the Ocular Hypertension Treatment Study (OHTS).  Arch Ophthalmol.  2000. 118(9):1187-1194.
[PubMed]

Anderson D, Chauhan B, Johnson C, Katz J, Patella M, Drance S.  Criteria for progression of glaucoma in clinical management and outcome studies.  Am J Ophthalmol.  2000. 130:827-829.

Bosworth C, Sample P, Johnson C, Weinreb R.  Current practice with standard automated perimetry.  Seminars in Ophthalmology.  2000. 15(4):172-187.
[PubMed]

Cioffi G, Mansberger S, Spry P, Johnson C, Van Buskirk E.  Frequency doubling perimetry and the detection of eye disease in the community.  Transactions of the American Ophthalmologic Society.  2000. 98:195-199.

Cello K, Nelson-Quigg J, Johnson C.  Frequency Doubling Technology (FDT) perimetry for detection of glaucomatous visual field loss.  Am J Ophthalmol.  2000. 129(3):314-322.
[PubMed]

Demirel S, Johnson C.  Isolation of short-wavelength sensitive mechanisms in normal and glaucomatous visual field regions.  J Glaucoma.  2000. 9(1):63-73.
[PubMed]

Johnson C.  New Developments in Perimetry.  McGraw-Hill.  2000. 

Nelson-Quigg J, Cello K, Johnson C.  Predicting binocular visual field sensitivity from monocular visual field results.  Invest Ophthalmol Vis Sci.  2000. 41(8):2212-2221.
[PubMed]

Johnson C, Cello K, Nelson-Quigg J.  Reply to Dr.Brusini “Frequency Doubling Technology perimetry for detection of glaucomatous visual field loss”.  Am J Ophthalmol.  2000. 130:860=861.

Johnson C.  Screening fields on the cutting edge. Promising developments designed to improve your ability to detect glaucoma at the early stages.  Review of Optometry.  2000. 137:1-5.

Spry P, Bates A, Johnson C, Chauhan B.  Simulation of longitudinal threshold visual field data.  Invest Ophthalmol Vis Sci.  2000. 41:2192-2200.

Cioffi G, Liebmann J, Johnson C, Weinreb R.  Structural-functional relationships of the optic nerve in glaucoma.  J Glaucoma.  2000. 9:3-4.

Fortune B, Cioffi G, Johnson C, Kondo Y, Mochizuki K, Kitazawa Y.  The relationship between multifocal electroretinography and standard automated perimetry findings in normal-tension glaucoma.  Harcourt Health Communications.  2000. 

Johnson C, Cioffi G, Liebmann J, Sample P, Zangwill L, Weinreb R.  The relationship between structural and functional alterations in glaucoma: A review.  Seminars in Ophthalmology.  2000. 15(4):221-233.
[PubMed]

Johnson C.  What is progression of visual field loss?.  Harcourt Health Communications.  2000. 

Demirel S, Thibos L, Johnson C.  Age and eccentricity effects on grating detection and grating resolution automated perimetry.  Kugler Publications.  1999. 

Johnson C.  California Department of Forestry and Fire Protection: Report and Recommendations.  California State Personnel Board Technical Report.  1999. 

Keltner J, Johnson C, Spurr J, Beck R, The Optic Neuritis Study Group .  Comparison of central and peripheral visual field properties in the Optic Neuritis Treatment Trial (ONTT).  Am J Ophthalmol.  1999. 128(5):543-553.
[PubMed]

Johnson C.  Determination of glaucomatous visual field progression using standard automated perimetry and specialized visual field test procedures.  The Gullstrand Foundation.  1999. 

Johnson C, Cioffi G, Van Buskirk E.  Evaluation of two screening tests for frequency doubling technology perimetry.  Kugler Publications.  1999. 

Johnson C, Cioffi G, Van Buskirk E.  Frequency doubling technology perimetry using a 24-2 stimulus presentation pattern.  Optom Vis Sci.  1999. 76(8):571-581.
[PubMed]

Adams C, Bullimore M, Wall M, Fingeret M, Johnson C.  Normal aging effects for frequency doubling technology perimetry.  Optom Vis Sci.  1999. 76(8):582-587.
[PubMed]

Johnson C.  Psychophysical endpoints.  Eur J Ophthalmol;  1999. 

Chauhan B, Johnson C.  Test-retest variability characteristics of Frequency-Doubling Perimetry and conventional perimetry in glaucoma patients and normal subjects.  Invest Ophthalmol Vis Sci.  1999. 40(3):648-656.
[PubMed]

Fingeret M, Johnson C.  The changing nature of glaucoma .  Optom Vis Sci.  1999. 76:515.

Sullivan P, Cioffi G, Wang L, Johnson C, Van Buskirk E, Sherman K, Bacon D.  The influence of ocular pulsatility on scanning laser doppler flowmetry.  Am J Ophthalmol.  1999. 128:81-87.

Johnson C, Wall M, Fingeret M, Lalle P.  A Primer for Frequency Doubling Technology Perimetry.  Welch Allyn;  1998.

Wall M, Johnson C, Kutzko K, Nguyen R, Brito C, Keltner J.  Long- and short-term variability of automated perimetry results in patients with optic neuritis and healthy subjects.  Arch Ophthalmol.  1998. 116(1):53-61.
[PubMed]

Johnson C, Keltner J.  Principles and Techniques of the Examination of the Visual Sensory System.  1998. 

Johnson C, Cioffi G, Drance S, Gaasterland D, Mills R, Ashburn F, Hnik P, Van Coevorden R.  A multicenter comparison study of the Humphrey Field Analyzer I and the Humphrey Field Analyzer II.  Ophthalmology.  1997. 104(11):1910-1917.
[PubMed]

Johnson C, Brintz N.  Entry-level vision standards for Academic Teachers in the California Department of the Youth Authority.  California Youth Authority.  1997. 

Lynch S, Johnson C, Demirel S.  Is early damage in glaucoma selective for a particular cell type or pathway?.  Kugler Publications.  1997. 

Sample P, Johnson C, Haegerstrom-Portnoy G, Adams A.  Optimale parameter Fur die automatische Kurzwellen-Perimetrie.  Search on Glaucoma.  1997. 5:52-56.

Johnson C, Samuels S.  Screening for glaucomatous visual field loss using the frequency-doubling contrast test.  Invest Ophthalmol Vis Sci.  1997. 38(2):413-425.
[PubMed]

Gutierrez P, Wilson M, Johnson C, Gordon M, Cioffi G, Ritch R, Sherwood M, Curnow B, Mangione C.  The influence of glaucomatous visual field loss and health-related quality of life.  Arch Ophthalmol.  1997. 115:777-784.

Johnson C, Demirel S.  The role of spatial and temporal factors in frequency doubling perimetry.  Kugler Publications.  1997. 

Demirel S, Johnson C, Fendrich R, Vingrys A.  The slope of frequency-of-seeing curves in normal, amblyopic and pathologic vision.  J Opt Soc Am Technical Digest Series.  1997. 

Demirel S, Johnson C.  Validation of a risk model for glaucomatous loss: Application to standard automated perimetry and SWAP.  Kugler Publications.  1997. 

Johnson C.  Visual function measures in experimental glaucoma.  J Glaucoma.  1997. 6:351-352.

Johnson C, Nelson-Quigg J, Morse L.  Wavelength dependent lens transmission properties in diabetics and non-diabetics.  Kluwer Publishers.  1997. 

Yoshiyama K, Johnson C.  Which method of flicker perimetry is most effective for detection of glaucomatous visual field loss?.  Invest Ophthalmol Vis Sci.  1997. 38(11):2270-2277.
[PubMed]

Demirel S, Johnson C.  Short Wavelength Automated Perimetry (SWAP).  Optometry Today.  1996 September. 

Johnson C.  Diagnostic value of Short Wavelength Automated Perimetry (SWAP).  Curr Opin Ophthalmol.  1996. 7(2):54-58.
[PubMed]

Johnson C, Brintz N.  Entry-level vision standards for Parole Agent, California Youth Authority.  California Youth Authority.  1996. 

Johnson C.  Ocular hypertension treatment study - determination of progression.  Kugler Publications.  1996. 3:165-182.

Sample P, Johnson C, Haegerstrom-Portnoy G, Adams A.  Optimum parameters for short-wavelength automated perimetry.  J Glaucoma.  1996. 5(6):375-383.
[PubMed]

Johnson C.  Perimetry and Visual Field Testing.  WB Saunders.  1996. 

Demirel S, Johnson C.  Short Wavelength Automated Perimetry (SWAP) in ophthalmic practice.  J Am Optom Assoc.  1996. 67(8):451-456.
[PubMed]

Johnson C.  Standardizing the measurement of visual fields for clinical research: Guidelines from the Eye Care Technology Forum.  Ophthalmology.  1996. 103(1):186-189.
[PubMed]

Johnson C.  The basis for early losses of visual function in glaucoma.  Search on Glaucoma (German).  1996. 4:4-7.

Keltner J, Johnson C, Spurr J, Beck R, The Optic Neuritis Study Group .  The Optic Neuritis Treatment Trial in the United States. Japanese Journal of Ophthalmology.  Centenary of the Japanese Ophthalmological Society.  1996. 

Johnson C, Marshall D.  Aging effects for opponent mechanisms in the central visual field.  Optom Vis Sci.  1995. 72(2):75-82.
[PubMed]

Johnson C, Marshall D, Eng K.  Displacement threshold perimetry in glaucoma using a Macintosh computer system and a 21 inch monitor.  Kugler Publications.  1995. 

Johnson C, Casson E.  Effects of luminance, contrast and blur on visual acuity.  Optom Vis Sci.  1995. 72:864-869.

Johnson C.  Occupational Psychophysics: Establishing job-related vision standards.  Vision Science and its Applications, J Opt Soc Am Technical Digest Series.  1995. 

Johnson C, Brandt J, Khong A, Adams A.  Short wavelength automated perimetry (SWAP) in low-, medium-, and high-risk ocular hypertensive eyes: Initial baseline results.  Arch Ophthalmol.  1995. 113(1):70-76.
[PubMed]

Johnson C, Keltner J.  Short Wavelength Automated Perimetry (SWAP) in optic neuritis.  Kugler Publications.  1995. 

Keltner J, Johnson C.  Short-Wavelength Automated Perimetry (SWAP) in neuro-ophthalmologic disorders.  Arch Ophthalmol.  1995. 113(4):475-481.
[PubMed]

Fendrich R, Wessinger C, Marshall D, Johnson C.  Stabilized image perimetry: Evaluating the influence of eye movements on perimetry data.  Vision Science and its Applications, J Opt Soc Am Technical Digest Series.  1995. 

Bedell H, Johnson C.  The effect of flicker on foveal and peripheral thresholds for oscillatory motion.  Vision Res.  1995. 35:2179-2189.

Johnson C.  The Glenn A. Fry Award Lecture: Early losses of visual function in glaucoma.  Optom Vis Sci.  1995. 72(6):359-370.
[PubMed]

Johnson C, Day T.  Enter Level Vision Standards for Lifeguards.  California Department of Parks and Recreation Technical Report.  1994. 

Johnson C, Day T.  Enter Level Vision Standards for Park Rangers.  California Department of Parks and Recreation Technical Report.  1994. 

Johnson C, Day T.  Entry Level Vision Standards for Fish and Game Wardens.  California Department of Fish and Game Technical Report.  1994. 

Johnson C, Brintz N.  Entry Level Vision Standards for Group Supervisors and Youth Counselors.  California Department of the Youth Authority Technical Report.  1994. 

Chauhan B, Johnson C.  Evaluating and optimizing test strategies in automated perimetry.  J Glaucoma.  1994. 3(Suppl 1):S73-S81.
[PubMed]

Johnson C.  Evaluation of visual function.  Lippincott.  1994. 

Johnson C.  Selective vs nonselective losses in glaucoma.  J Glaucoma.  1994. 3(Suppl 1):S32-S44.

Johnson C, Brandt J, Khong A, Adams A.  Short-wavelength sensitivity losses in low, moderate and high risk ocular hypertensives: Initial baseline results in 250 subjects.  Vision Science and its Applications, J Opt Soc Am Technical Digest Series.  1994. 2:290-293.

Keltner J, Johnson C, Spurr J, Beck R, The Optic Neuritis Study Group .  Visual field profile of optic neuritis: One-year follow-up in the Optic Neuritis Treatment Trial.  Arch Ophthalmol.  1994. 112(7):946-953.
[PubMed]

Johnson C, Howard D, Marshall D, Shu H.  A noninvasive video-based method of measuring lens transmission properties of the human eye.  Optom Vis Sci.  1993. 70:944-955.

Johnson C, Nelson-Quigg J.  A prospective three-year study of response properties of normal subjectss and patients during automated perimetry.  Ophthalmology.  1993. 100(2):269-274.
[PubMed]

Lewis R, Johnson C, Adams A.  Automated perimetry and short-wavelength-sensitivity (SWS) in patients with asymmetric intraocular pressures.  Graefe's Arch Clin Exp Ophthalmol.  1993. 231(5):274-278.
[PubMed]

Keltner J, Johnson C, Spurr J, Beck R, The Optic Neuritis Study Group .  Baseline visual field profile of optic neuritis: The experience of the Optic Neuritis Treatment Trial.  Arch Ophthalmol.  1993. 111(2):231-234.
[PubMed]

Maddock R, Casson E, Lott L, Carter C, Johnson C.  Benzodiazepine effects on flicker sensitivity: Role of stimulus frequency and size.  Progress in Neuropsychopharmacology and Biological Psychiatry.  1993. 17:955-970.

Johnson C, Adams A, Casson E, Brandt J.  Blue-on-yellow perimetry can predict the development of glaucomatous visual field loss.  Arch Ophthalmol.  1993. 111(5):645-650.
[PubMed]

Johnson C, Adams A, Casson E.  Blue-on-yellow perimetry: A five year overview.  Kugler Publications.  1993. 

Khong A, Mannis M, Plotnik R, Johnson C.  Computerized topographic analysis of the healing graft after penetrating keratoplasty for keratoconus.  Arch Ophthalmol.  1993. 115:209-215.

Johnson C, Groome W.  Final Report on Entry Level Drawbridge Operator Vision Standards for the California Department of Transportation.  California State Personnel Board Test Validation and Construction Division Technical Report.  1993. 

Johnson C.  Final Report on Entry Level Vision Standards for Licensing and Registration Examiners in the California Department of Motor Vehicles.  California Department of Motor Vehicles Technical Report.  1993. 

Casson E, Johnson C.  Flicker perimetry in ocular hypertensives: Evidence for high and low sensitivity defects.  Noninvasive Assessment of the Visual System, J Opt Soc Am Technical Digest Series.  1993. 3:304-307.

Casson E, Johnson C, Shapiro L.  Longitudinal comparison of temporal-modulation perimetry to white-on-white and blue-on-yellow perimetry in ocular hypertension and early glaucoma.  J Opt Soc Am A Opt Image Sci Vis.  1993. 10(8):1792-1806.
[PubMed]

Johnson C.  Modern developments in clinical perimetry.  Curr Opin Ophthalmol.  1993. 4(2):7-13.
[PubMed]

Johnson C, Adams A, Casson E, Brandt J.  Progression of early glaucomatous visual field loss as detected by blue-on-yellow and standard white-on-white automated perimetry.  Arch Ophthalmol.  1993. 111(5):651-656.
[PubMed]

Keltner J, Johnson C, Beck R, Cleary P, Spurr J, The Optic Neuritis Study Group .  Quality control functions of the Visual Field Reading Center (VFRC) for the Optic Neuritis Treatment Trial (ONTT).  Controlled Clin Trials.  1993. 14(2):143-159.
[PubMed]

Johnson C.  Role of automation in new instrumentation.  Optom Vis Sci.  1993. 70(4):288-298.
[PubMed]

Casson E, Johnson C.  Temporal modulation perimetry in glaucoma and ocular hypertension.  Kugler Publications.  1993. 

Casson E, Johnson C, Nelson-Quigg J.  Temporal modulation perimetry: the effects of aging and eccentricity on sensitivity in normals.  Invest Ophthalmol Vis Sci.  1993. 11:3096-3102.
[PubMed]

Keltner J, Johnson C, Spurr J, Beck R.  “Baseline visual field profile of optic neuritis” by Keltner JL, et al.  Arch Ophthalmol.  1993. 111:1315-1317.

Osako M, Casson E, Johnson C.  Comparison of spatial summation between glaucoma and optic neuritis patients with statokinetic dissociation.  Jap J Ophthalmol.  1992. 46:837-841.

Johnson C, Casson E, Zadnik K.  Final Report on Entry Level Correctional Officer Vision Standards for the California Department of Corrections.  California Department of Corrections Techincal Report.  1992. 

Johnson C, Chauhan B, Shapiro L.  Properties of staircase procedures for estimating thresholds in automated perimetry.  Invest Ophthalmol Vis Sci.  1992. 33(10):2966-2974.
[PubMed]

Mutti D, Zadnik K, Johnson C, Howland H, Murphy C.  Retinoscopic measurement of the refractive state of the rat.  Vision Res.  1992. 32:583-586.

Johnson C, Adams A, Casson E.  Short-wavelength-sensitive perimetry (SWSP) can predict which glaucoma suspects will develop visual field loss.  SPIE Publications.  1992. 1644:230-236.

Keltner J, Johnson C.  Visual function and driving safety.  Arch Ophthalmol.  1992. 110:1697-1698.

Johnson C, Shapiro L.  A rapid heuristic test procedure for automated perimetry.  Kugler and Ghedini.  1991. 

Johnson C, Adams A, Casson E, Nelson-Quigg J.  Can short wavelength sensitivity losses predict the development of glaucomatous visual field defects?.  Noninvasive Assessment of the Visual System, J Opt Soc Am Technical Digest Series.  1991. 1:216-219.

Shapiro L, Johnson C.  Evaluation of the diagnosis of visual fields.  Kugler and Ghedini.  1991. 

Keltner J, Johnson C, Spurr J, The Optic Neuritis Study Group .  Optic neuritis treatment trial: Initial visual field defects.  Kugler and Ghedini.  1991. 

Adams A, Johnson C, Lewis R.  S cone pathway sensitivity loss in ocular hypertension and early glaucoma has nerve fiber bundle pattern.  The NEtherlands: Kluwer Academic Publishers.  1991. 

Osako M, Casson E, Johnson C, Huang P, Keltner J.  Stato-kinetic dissociation in optic neuritis: Analysis of spatial and temporal characteristics.  Jap J Ophthalmol.  1991. 85:294-297.

Osako M, Casson E, Johnson C, Huang P, Keltner J.  Statokinetic dissociation: Analysis of spatial and temporal characteristics by perimetry.  Kugler and Ghedini.  1991. 

Adams C, Johnson C.  Steady-state and dynamic response properties of the Mandelbaum effect.  Vision Res.  1991. 31:751-760.

Casson E, Osako M, Johnson C, Hwang P.  Temporal and spatial response properties of optic neuritis patients manifesting statokinetic dissociation.  Appl Opt.  1991. 30(16):2136-2142.
[PubMed]

Keltner J, Johnson C, Spurr J, The Optic Neuritis Study Group .  The Optic Neuritis Study Group: Visual Field Reading Center: Optic Neuritis Treatment Trial.  Kugler and Ghedini.  1991. 

Keltner J, Johnson C, Beck R, Spurr J, The Optic Neuritis Study Group .  The Optic Neuritis Treatment Trial in the United States - Visual Field Reading Center.  CIBA Vision Symposium Proceedings.  1991. 

Mannis M, Zadnik K, Johnson C.  Contrast sensitivity: A viewpoint for clinicians.  Springer-Verlag.  1990. 

Shu H, Howard D, Johnson C.  Development of a noninvasive video-based method of measuring transmission properties of the human lens.  J Opt Soc Am Technical Diget Series.  1990. 3:151-154.

Shapiro L, Johnson C.  Quantitative evaluation of manual kinetic perimetry using computer simulation.  Appl Opt.  1990. 29(10):1445-50.
[PubMed]

Johnson C, Nelson-Quigg J.  Reliability of automated perimetric tests: In reply.  Arch Ophthalmol.  1990. 108:777-778.

Casson E, Shapiro L, Johnson C.  Short-term fluctuation as an estimate of variability in visual field data.  Invest Ophthalmol Vis Sci.  1990. 31(11):2459-2463.
[PubMed]

Casson E, Hwang P, Johnson C, Osako M.  Temporal response properties of optic neuritis patients manifesting statokinetic dissociation (SKD).  J Opt Soc Am Technical Digest Series.  1990. 3:48-51.

Johnson C, Shapiro L.  A comparison of MOBS (Modified Binary Search) and staircase test procedures in automated perimetry.  J Opt Soc Am Technical Digest Series.  1989. 7:84-87.

Johnson C, Adams A, Lewis R.  Automated perimetry of short-wavelength sensitive mechanisms in glaucoma and ocular hypertension. Preliminary findings.  Kugler & Ghedini.  1989. 

Johnson C, Adams A, Lewis R.  Evidence for a neural basis of age-related visual field loss in normal observers.  Invest Ophthalmol Vis Sci.  1989. 30(9):2056-2064.
[PubMed]

Shapiro L, Johnson C, Kennedy R.  KRAKEN. A computer simulation procedure for static, kinetic, suprathreshold static and heuristic perimetry.  Kugler & Ghedini.  1989. 

Applegate R, Johnson C, Howland H, Yee R.  Monochromatic wavefront aberrations following radial keratotomy.  Noninvasive Assessment of the Visual System, J Opt Soc Am Technical Digest Series.  1989. 7:98-102.

Nelson-Quigg J, Twelker J, Johnson C.  Response properties of normal observers and patients during automated perimetry.  Arch Ophthalmol.  1989. 107(11):1612-1615.
[PubMed]

Wedemeyer L, Johnson C, Keltner J.  Statokinetic dissociation in optic nerve disease.  Kugler & Ghedini.  1989. 

Chauhan B, Drance S, Douglas G, Johnson C.  Visual field damage in normal-tension and high-tension glaucoma.  Am J Ophthalmol;  1989. 

Lewis R, Vijayan N, Watson C, Keltner J, Johnson C.  Visual field loss in migraine.  Ophthalmology.  1989. 96:321-326.

Johnson C, Adams A, Twelker J, Quigg J.  Age-related changes in the central visual field for short-wavelength-sensitive pathways..  J Opt Soc Am A Opt Image Sci Vis.  1988. 5:2131-2139.

Mannis M, Zadnik K, Johnson C, Adams C.  Contrast sensitivity after epikeratophakia.  Cornea.  1988. 7:280-284.

HIlls J, Johnson C.  Evaluation of the T test as a method of detecting visual field changes.  Ophthalmology.  1988. 95(2):261-266.
[PubMed]

Johnson C, Adams C, Lewis R.  Fatigue effects in automated perimetry.  Appl Opt.  1988. 27(6):1030-1037.
[PubMed]

Ruben J, Lewis R, Johnson C, Adams C.  The effect of Goldmann applanation tonometry on automated static threshold perimetry.  Ophthalmology.  1988. 95(2):267-270.
[PubMed]

Johnson C, Keltner J, Lewis R.  Automated kinetic perimetry: An efficient method of evaluating peripheral visual field loss.  Appl Opt.  1987. 26(8):1409-1414.
[PubMed]

Mannis M, Zadnik K, Johnson C, Adams C.  Contrast sensitivity after penetrating keratoplasty.  Arch Ophthalmol.  1987. 105:1220-1223.

Reed D, Mannis M, Hills J, Johnson C.  Corneal epithelial healing after penetrating keratoplasty using topical Healon versus balanced salt solution.  Ophthal Surg.  1987. 18:525-528.

Johnson C, Keltner J, Lewis R.  JAWS (Joint Automated Weighting Statistic): A method of converting results between automated perimeters.  Doc Ophthalmol Proc Series.  1987. 49:567-568.

Johnson C, Keltner J.  Optimal rates of movement for kinetic perimetry.  Arch Ophthalmol.  1987. 105(1):73-75.
[PubMed]

Johnson C.  Peripheral visual function at various adaptation levels.  National Academy Press.  1987. 

Zadnik K, Mannis M, Johnson C, Rich D.  Rapid contrast sensitivity assessment in keratoconus.  Am J Ophthalmol.  1987. 64:693-697.

Johnson C, Lewis R.  Staircase scoring procedures for automated perimetry.  Doc Ophthalmol Proc Series.  1987. 49:575-580.

Keltner J, Johnson C.  Visual function, driving safety and the elderly.  Ophthalmology.  1987. 94(9):1180-1188.
[PubMed]

Keltner J, Johnson C.  Comparative material on automated and semiautomated perimeters - 1986.  Ophthalmology.  1986. 93(Suppl 9):1-25.
[PubMed]

Keltner J, Johnson C.  Current status of automated perimetry. Is the ideal automated perimeter available?.  Arch Ophthalmol.  1986. 104(3):247-349.
[PubMed]

Post R, Johnson C.  Motion sensitivity in central and peripheral vision.  Am J Opt Physiol Opt.  1986. 63:104-107.

Lewis R, Johnson C, Keltner J, Labermeier P.  Variability of quantitative automated perimetry in normal observers.  Ophthalmology.  1986. 93(7):878-881.
[PubMed]

Lewis R, Keltner J, Johnson C.  A clinician's guide to automated perimetry.  Transactions of the Pacific Coast Oto-Ophthalmological Society.  1985. 66:263-265.

Johnson C, Keltner J.  Automated visual field testing.  Proceedings of the Triservice Aeromedical Research Panel.  1985. 

Keltner J, Johnson C.  Comparative material on automated and semi-automated perimeters - 1985.  Ophthalmology.  1985. 92(Suppl 8):34-57.
[PubMed]

Algazi V, Keltner J, Johnson C.  Computer analysis of the optic cup in glaucoma.  Invest Ophthalmol Vis Sci.  1985. 26:1759-1770.

Post R, Johnson C, Owens D.  Does performance of tasks affect the resting focus of accommodation?.  Am J Opt Physiol Opt.  1985. 62:533-537.

Lewis R, Johnson C.  Early detection of glaucomatous damage. I. Psychophysical disturbances.  Surv Ophthalmol.  1985. 30(2):111-126.
[PubMed]

Johnson C, Keltner J, Jacob M.  New test procedures for the SQUID automated perimeter.  Doc Ophthalmol Proc Series.  1985. 42:91-94.

Lewis R, Keltner J, Johnson C.  Preliminary clinical trials with the Humphrey Field Analyzer.  Doc Ophthalmol Proc Series.  1985. 42:159-165.

Keltner J, Johnson C, Lewis R.  Quantitative office perimetry.  Ophthalmology.  1985. 92(7):862-872.
[PubMed]

Keltner J, May W, Johnson C, Post R.  The California syndrome: Functional visual complaints with potential economic impact.  Ophthalmology.  1985. 92:427-435.

Keltner J, May W, Johnson C, Post R.  The California syndrome: Functional visual complaints with potential economic impact.  Ophthalmology.  1985. 92:427-435.

Verriest G, Bailey J, Calabria G, Campos E, Crick R, Enoch J, Esterman B, Friedmann A, Hill A, Ikeda M, Johnson C, Overington I, Ronchi L, Saida S, Serra A, Villani S, Weale R, Wolbarsht M, Zingirian M.  The occupational visual field: II. Practical aspects: The functional visual field in abnormal conditions and its relationship to visual ergonomics, visual impairment and job fitness.  Doc Ophthalmol Proc Series.  1985. 42:281-326.

Keltner J, Johnson C.  The Synemed "Fieldmaster" perimeters.  Grune & Stratton.  1985. 

Lewis R, Johnson C, Keltner J.  The variables of automated perimetry.  Transactions of the Pacific Coast Oto-Ophthalmological Society.  1985. 66:273-275.

Keltner J, Johnson C.  Peripheral vision screening in a driving population.  Research to Prevent Blindness, Inc.  1984 October 3. 

Schor C, Johnson C, Post R.  Adaptation of tonic accommodation.  Ophthal Physiol Opt.  1984. 4:133-137.

Zadnik K, Mannis M, Johnson C.  An analysis of contrast sensitivity in identical twins with keratoconus.  Cornea.  1984. 3:99-103.

Keltner J, Johnson C.  Automated and manual perimetry - A six year overview. Special emphasis on neuro-ophthalmic problems.  Ophthalmology.  1984. 91(1):68-85.
[PubMed]

Keltner J, Johnson C.  Automated perimetry.  Ophthalmology.  1984. Suppl:51-57.

Keltner J, Johnson C.  Comparative material on automated and semiautomated perimeters - 1984.  Ophthalmology.  1984. Suppl:25-50.

Post R, Johnson C, Tsuetaki T.  Comparison of laser and infrared techniques for measurement of the resting focus of accommodation: Mean differences and long-term variability.  Ophthal Physiol Opt.  1984. 4:327-332.

Hamill T, Post R, Johnson C, Keltner J.  Correlation of color vision deficits and observable changes in the optic disc in a population of ocular hypertensives.  Arch Ophthalmol.  1984. 102(11):1637-1639.
[PubMed]

Post R, Scobey R, Johnson C.  Effects of retinal eccentricity on displacement thresholds for unidirectional and oscillatory stimuli.  Vision Res.  1984. 24:835-840.

Johnson C, Post R, Tsuetaki T.  Short-term variability of the resting focus of accommodation.  Ophthal Physiol Opt.  1984. 4:319-325.

Mannis M, Zadnik K, Johnson C.  The effect of penetrating keratoplasty on contrast sensitivity in patients with keratoconus.  Arch Ophthalmol.  1984. 102:1513-1516.

Bedell H, Johnson C.  The perceived size of targets in the peripheral and central visual fields.  Ophthal Physiol Opt.  1984. 4:123-131.

Johnson C.  The rime of the ancient perimetrist.  Surv Ophthalmol.  1984. 28:428-429.

Drance S, Keltner J, Johnson C.  Automated and semi-automated perimetry.  American Academy of Ophthalmology.  1983. 

Keltner J, Johnson C.  Comparative material on automated and semiautomated perimeters - 1983.  Ophthalmology.  1983. Suppl:1-35.
[PubMed]

Keltner J, Johnson C.  Correlations between peripheral visual function and driving performance.  Doc Ophthalmol Proc Series.  1983. 35:211-216.

Matsumoto E, Johnson C, Post R.  Effect of X-Chrom lens wear on chromatic discrimination and stereopsis in color-deficient observers.  Am J Opt Physiol Opt.  1983. 60:297-302.

Keltner J, Johnson C.  Preliminary examination of the SQUID automated perimeter.  Doc Ophthalmol Proc Series.  1983. 35:371-377.

Johnson C, Keltner J.  Properties of scotomata in glaucoma and optic nerve disease: computer analysis.  Doc Ophthalmol Proc Series.  1983. 35:281-286.

Keltner J, Johnson C.  Screening for visual field abnormalities with automated perimetry.  Surv Ophthalmol.  1983. 28(3):175-183.
[PubMed]

Johnson C, Keltner J.  The incidence of visual field loss in 20,000 eyes and its relationship to driving performance.  Arch Ophthalmol.  1983. 101:371-376.

Verriest G, Barca L, Dubois-Poulsen A, Houtmans M, Inditsky B, Johnson C, Overington I, Ronchi L, Villani S.  The occupational visual field. I. Theoretical aspects: the normal functional visual field.  Doc Ophthalmol Proc Series.  1983. 35:165-185.

Johnson C.  The test logic of automated perimetry.  JB Lippincott.  1983. 

Keltner J, Johnson C.  Comparative material on automated and semiautomated perimeters - 1982.  Ophthalmology.  1982. 89(Suppl):65-80.

Keltner J, Johnson C.  Effectiveness of automated perimetry in following glaucomatous visual field progression.  Ophthalmology.  1982. 89(3):247-254.
[PubMed]

Johnson C, Scobey R.  Effects of reference lines on displacement thresholds at various durations of movement.  Vision Res.  1982. 22:819-821.

Johnson C, Post R, Chalupa L, Lee T.  Monocular deprivation in humans: a study of identical twins.  Invest Ophthalmol Vis Sci.  1982. 23:135-138.

Keltner J, Johnson C.  Comparative material on automated and semi-automated perimeters.  Ophthalmology.  1981 October. Suppl:67-69.

Maddock R, Millodot M, Leat S, Johnson C.  Accommodation responses and refractive error.  Invest Ophthalmol Vis Sci.  1981. 20:387-391.

Keltner J, Johnson C.  Automated perimetry. I. A consumer's guide.  Ann Ophthalmol.  1981. 13(3):275-279.
[PubMed]

Keltner J, Johnson C.  Automated perimetry. II. Devices manufactured in the United States and abroad.  Ann Ophthalmol.  1981. 13(4):395-397.
[PubMed]

Keltner J, Johnson C.  Capabilities and limitations of automated suprathreshold static perimetry.  Doc Ophthalmol Proc Series 26.  1981. 26:49-55.

Keltner J, Johnson C.  Comments on: Visual field defect characteristics in cases of hyper- prolactinaemia by R. Fulmek and F. Friedrich.  Doc Ophthalmol Proc Series 26.  1981. 26:334-335.

Johnson C, Keltner J.  Computer analysis of visual field loss and optimization of automated perimetric test strategies.  Ophthalmology.  1981. 88(10):1058-1065.
[PubMed]

Scobey R, Johnson C.  Displacement thresholds for unidirectional and oscillatory movement.  Vision Res.  1981. 21:1297-1302.

Scobey R, Johnson C.  Psychophyscial properties of Displacement Thresholds for Moving Targets.  Acta Psychologica.  1981. 48:59-65.

Johnson C, Keltner J, Balestrery F.  Static and acuity profile perimetry at various adaptation levels.  Doc Ophthalmol.  1981. 50(2):371-388.
[PubMed]

Johnson C, Keltner J.  Static and acuity profile perimetry in optic neuritis.  Doc Ophthalmol Proc Series 26.  1981. 26:305-312.

Keltner J, Johnson C, Cowley I.  Acuity profile perimetry in a unique case of bilateral central serous retinopathy.  Ann Ophthalmol.  1980. 12:726-731.

Johnson C, Keltner J.  Automated suprathreshold static perimetry.  Am J Ophthalmol.  1980. 89(5):731-741.
[PubMed]

Johnson C, Keltner J.  Comparative evaluation of the Autofield-1, CFA-120 and Fieldmaster Model 101-PR automated perimeters.  Ophthalmology.  1980. 87(8):777-784.
[PubMed]

Johnson C, Scobey R.  Foveal and peripheral displacement thresholds as a function of stimulus luminance, line length and duration of movement.  Vision Res.  1980. 20:709-715.

Keltner J, Johnson C.  Mass visual field screening in a driving population.  Ophthalmology.  1980. 87(8):785-790.
[PubMed]

Johnson C, Keltner J.  Reply to Gerber, Brothers, Erickson, Sprotzer and Farrell.  Arch Ophthalmol.  1980. 98:931-932.

Johnson C, Keltner J.  Comparison of manual and automated perimetry in 1,000 eyes.  IEEE Computer Society Publications.  1979 April. 

Johnson C, Keltner J, Balestrery F.  Acuity profile perimetry: Description of technique and preliminary clinical trials.  Arch Ophthalmol.  1979. 97(4):684-689.
[PubMed]

Keltner J, Johnson C.  Automated perimetry. Epitomes of Progress in Ophthalmology.  West J Med.  1979. 130(6):543.
[PubMed]

Krohn M, Keltner J, Johnson C.  Comparison of photographic techniques and films used in stereophotogrammetry of the optic disk.  Am J Ophthalmol.  1979. 88:859-863.

Johnson C, Keltner J, Krohn M, Portney G.  Photogrammetry of the optic disc in glaucoma and ocular hypertension using simultaneous stereo photography.  Invest Ophthalmol Vis Sci.  1979. 18:1252-1263.

Johnson C, Leibowitz H.  Practice effects for visual resolution in the periphery.  Perception & Psychophysics.  1979. 25:439-442.

Johnson C, Keltner J, Balestrery F.  Suprathreshold static perimetry in glaucoma and other optic nerve disease.  Ophthalmology.  1979. 86(7):1278-1286.
[PubMed]

Keltner J, Johnson C, Balestrery F.  Suprathreshold static perimetry: Initial clinical trials with the Fieldmaster automated perimeter.  Arch Ophthalmol.  1979. 97(2):260-272.
[PubMed]

Johnson C, Keltner J, Balestrery F.  Effects of target size and eccentricity on visual detection and resolution.  Vision Res.  1978. 18:1217-1222.

Leibowitz H, Johnson C, Guez J.  Differences in the processing of peripheral stimuli.  Doc Ophthalmol Proc Series XIV (Second International Visual Field Symposium).  1977. 14:299-302.

Johnson C, Enoch J.  Human psychophysical analysis of receptive field-like properties: VI. Current summary and analysis of factors affecting the psychophysical transient-like function.  Doc Ophthalmol Proc Series XIV (Second International Visual Field Symposium).  1977. 14:367-371.

Enoch J, Johnson C, Fitzgerald C.  Human psychophysical analysis of receptive field-like properties: VII. Initial clinical trials of the psychophysical transient-like function.  Doc Ophthalmol Proc Series XIV (Second International Visual Field Symposium).  1977. 14:373-378.

Enoch J, Johnson C.  The Westheimer function as an indicator of fixation locus.  Am J Ophthalmol.  1977. 83(4):495-498.
[PubMed]

Enoch J, Johnson C.  Additivity of effects within sectors of the sensitization zone of the Westheimer function.  Am J Opt Physiol Opt.  1976. 53:350-358.

Johnson C.  Effects of luminance and stimulus distance on accommodation and visual resolution.  J Opt Soc Am.  1976. 66:138-142.

Enoch J, Lazarus J, Johnson C.  Human psychophysical analysis of receptive field-like properties: I. A new transient like visual response using a moving windmill (Werblin-type) target.  Sensory Processes.  1976. 1:14-32.

Johnson C, Enoch J.  Human psychophysical analysis of receptive field-like properties: II. Dichoptic properties of the Westheimer function.  Vision Res.  1976. 16:1455-1462.

Johnson C, Enoch J.  Human psychophysical analysis of receptive field-like properties: III. Dichoptic properties of a new transient-like psychophysical function.  Vision Res.  1976. 16:1463-1470.

Johnson C, Enoch J.  Human psychophysical analysis of receptive field-like properties: IV. Further examination and specification of the psychophysical transient-like function.  Doc Ophthalmol.  1976. 41(2):329-345.
[PubMed]

Johnson C, Enoch J.  Human psychophysical analysis of receptive field-like properties: IV. Further examination and specifications of the psychophysical transient-like function.  Doc Ophthalmol.  1976. 41:329-345.

Johnson C, Enoch J, Fitzgerald C.  Human psychophysical analysis of receptive field-like properties: V. Adaptation of stationary and moving windmill target characteristics to clinical populations.  Doc Ophthalmol.  1976. 41:347-370.

Enoch J, Johnson C, Fitzgerald C.  Human psychophysical analysis of receptive field-like properties: V. Adaptation of stationary and moving windmill target characteristics to clinical populations..  Doc Ophthalmol.  1976. 41(2):347-370.
[PubMed]

Johnson C, Leibowitz H, Millodot M, Lamont A.  Peripheral visual acuity and refractive error: Evidence for "two visual systems"?.  Perception and Psychophysics.  1976. 20:460-462.

Johnson C.  Some psychophysical considerations for visual training.  Low Vision Abstracts.  1976. 2:1-3.

Johnson C, Leibowitz H.  Velocity-time reciprocity in the perception of motion: Foveal and peripheral determinations.  Vision Res.  1976. 16:177-180.

Millodot M, Johnson C, Lamont A, Leibowitz H.  Effect of dioptrics on peripheral visual acuity.  Vision Res.  1975. 15:1357-1362.

Johnson C, Leibowitz H.  Practice, refractive error and feedback as factors influencing peripheral motion thresholds.  Perception and Psychophysics.  1974. 15:276-280.

Leibowitz H, Johnson C.  Dioptrics of the periphery of the eye.  Science.  1973. 182:87.

Leibowitz H, Johnson C, Isabelle E.  Peripheral motion detection and refractive error.  Science.  1972. 177:1207-1208.

Date Last Modified: 08/22/2013 - 13:30:27