Abstract

We have shown that with field sizes of 8 degrees or more, protanopes and deuteranopes have trichromatic vision, mediated by a rhodopsin photorecptor. We propose a full delineation of this large-field trichromacy, and a comparison of large-field trichromacy with small-field dichromacy. In addition, we plan to study observers who show evidence of a rhodopsin-mediated color vision system, namely the incomplete achromats. We will perform psychophysical studies using fields of 1 degree to 8 degrees visual angle. The specific studies we propose include: color matching, luminosity (by heterochromactic flicker photometry), wavelength discrimination, hue estimation, and threshold additivity.

  Funding Agency

Agency
National Institute of Health (NIH)
Institute
National Eye Institute (NEI)
Type
Research Project (R01)
Project #
5R01EY001876-09
Application #
3256279
Study Section
(SSS)
Project Start
1977-09-30
Project End
1987-09-29
Budget Start
1985-09-30
Budget End
1986-09-29
Support Year
9
Fiscal Year
1985
Total Cost
Indirect Cost

  Institution

Name
University of Chicago
Department
Type
Schools of Medicine
DUNS #
225410919
City
Chicago
State
IL
Country
United States
Zip Code
60637

  Publications

Felleman, Daniel J; Lim, Heejin; Xiao, Youping et al. (2015) The Representation of Orientation in Macaque V2: Four Stripes Not Three. Cereb Cortex 25:2354-69
Schutte, M; Werner, P (1998) Redistribution of glutathione in the ischemic rat retina. Neurosci Lett 246:53-6
Lutze, M; Cox, N J; Smith, V C et al. (1990) Genetic studies of variation in Rayleigh and photometric matches in normal trichromats. Vision Res 30:149-62
Yeh, T; Smith, V C; Pokorny, J (1989) The effect of background luminance on cone sensitivity functions. Invest Ophthalmol Vis Sci 30:2077-86
Bresnick, G H; Smith, V C; Pokorny, J (1989) Autosomal dominantly inherited macular dystrophy with preferential short-wavelength sensitive cone involvement. Am J Ophthalmol 108:265-76
Khouri, G; Mets, M B; Smith, V C et al. (1988) X-linked congenital stationary night blindness. Review and report of a family with hyperopia. Arch Ophthalmol 106:1417-22
Sawusch, M; Pokorny, J; Smith, V C (1987) Clinical electroretinography for short wavelength sensitive cones. Invest Ophthalmol Vis Sci 28:966-74
Pokorny, J; Smith, V C (1986) Eye disease and color defects. Vision Res 26:1573-84
Smith, V C; Pokorny, J; Pass, A S (1985) Color-axis determination on the Farnsworth-Munsell 100-hue test. Am J Ophthalmol 100:176-82