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Ian Bailey

Ian Bailey

Low Vision
Job Title:
Medical School:
University of Melbourne
Berkeley, United States
Contact Information:
School of Optometry, University of California
Berkeley, CA
United States 94720
Phone: 510 642 1987
Fax: 510 642 1987

I am a clinician/scientist with special expertise in clinical visual psychophysics, clinical visual optics and low vision rehabilitation. Amongst my better known accomplishments are the design of the "LogMAR" visual acuity charts (ETDRS), the logMAR system for scoring visual acuity, decimalized severity grading, identification of relationships between vision functions and functional abilities such as mobility, face recognition and reading efficiency. I have also developed methods for prescribing low vision aids and methods for characterizing and measuring the critical optical and display parameters. Recently I have been developing new tests to better assess functional vision in persons with severe visual impairment. With colleagues we developed the Berkeley Rudimentary Vision Test that extends the range of visual acuity measurements from the usual 20/400 limit with standard letter charts to 20/16,000. The Berkeley Central Visual Field Test measures central visual fields using black targets on a white background in the central 10 degrees. We also have a computer-based test of contrast thresholds for the detection of large blinking squares on a white background. We characterize subjects' responses to changes in illumination levels but testing the changes in VA, VF and CS when retinal illuminance is reduced by a fixed amount (to 3%). Most features of these new are being incorporated into instruments being developed for clinical practice and research.

Honors (Selected)
Glenn A. Fry Award of the American Academy of Optometry 1986
Feinbloom Award, American Academy of Optometry 1994
Prentice Medal, American Academy of Optometry 2000
Pisart Award, Lighthouse International 2002
Honorary Doctor of Science degree, State University of New York 2005
Representative, Committee on Vision, Nat Acad Sciences and Nat Research Council,
representing Amer Optom Association and Amer Academy of Optometry 1984-1994
Member National Academy of Science/National Research Council Committee 1999-2002
on Disability Determination for Individuals with Visual Impairments
Member, Vision Advisory Panel for Department of Motor Vehicles (California) 1999-2004
Fellow American Academy of Optometry 1963- present
Member Association for Research in Vision and Ophthalmology 1983 - present
Member American Optometric Association 1980 - present
Member of International Society for Low Vision Research and Rehabilitation 1990 - present

C. Selected publications
Bailey, I.L. and J.E. Lovie. "New design principles for visual acuity letter charts."
Am. J. Optom & Physiol. Optics 1976, 53, 740-745.

Bailey, I.L. and J.E. Lovie. "The design and use of a new near-vision chart."
Am. J. Optom & Physiol. Optics 1980, 57, 378-387.

Marron, J.A. and I.L. Bailey. "Visual factors and orientation¬-mobility performance."
Am. J. Optom & Physiol. Optics 1982, 59, 413-426.

Ferris, F.L., A Kassoff, G.H. Bresnick and I.L. Bailey. "New visual acuity charts for clinical research." Amer. J. Ophthal. 1982, 94, 92-96.

Sheedy, J.E., I.L. Bailey and T.W. Raasch. "Visual acuity measurement and chart luminance."
Am. J. Optom & Physiol. Optics 1984, 61, 595-600.

Bailey, I.L., L.H. Boyd, W.,L. Boyd and M. Clark. "Readability of computer display print enlarged for low vision." Am. J. Optom & Physiol. Optics, 1987, 64, 678-685.

Bullimore M.A. and I.L. Bailey I.L.,"Face Recognition in Age RelatedMaculopathy", Investigative Ophthalmology and Visual Science, 1991, 32, 2020-2029.

Bailey I.L. and M.A Bullimore, "A new test of disability glare", Optom and Vis Sci, 1991, 68, 911-917.

Bailey I.L. , M.A.Bullimore, T.W. Raasch and H.R.Taylor,"Clinical Grading and the Effect of Scaling", Investigative Ophthalmology and Visual Science, 1991, 32, 422-432.

Chylack LT Jr, Wolfe JK, Singer D, Leske MC, Bullimore MA, Bailey IL, Friend J, McCarthy D, Wu S-Y, and the LSC Group. The Lens Opacities Classification System, version III (LOCS III).
Arch Ophthalmol, 1993, 111, 831-836.

Bullimore MA and Bailey IL, Reading eye-movements and age related maculopathy,
Optometry and Vision Science, 1995, 72,125-138.

Raasch, TW, Bailey, IL and Bullimore MA, Repeatability of visual acuity measurements,
Optom Vis Sci, 1998, 75, 342-348

Bailey, I.L., Lueck, A.H., Greer, R., Tuan, K.M., & Dornbusch, H., Understanding the relationships between print size and reading in low vision. Journal of Visual Impairment & Blindness. 2003, 97(6), 325-334.

Chetrit S, Guadet M, Wittich W, Bailey I, Overbury O, Efficiency of chart versus computer generated contrast sensitivity testing, Canadian J Optometry, 2009, 71(5): 34-41.

Bailey IL, AJ Jackson, H Minto, RB Greer, MA Chu, The Berkeley Rudimentary Vision Test,
Optom Vision Sci : 89(9), 1257-1264

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