L/M cone ratios as a function of retinal eccentricity

Citation
H. Knau et al., L/M cone ratios as a function of retinal eccentricity, COL RES APP, 26, 2001, pp. S128-S132
Citations number
39
Categorie Soggetti
Chemical Engineering
Journal title
COLOR RESEARCH AND APPLICATION
ISSN journal
03612317 → ACNP
Volume
26
Year of publication
2001
Supplement
S
Pages
S128 - S132
Database
ISI
SICI code
0361-2317(2001)26:<S128:LCRAAF>2.0.ZU;2-0
Abstract
Heterochromatic flicker photometry (HFP) was employed to estimate how the h uman long-wave sensitive (L) to middle-wave sensitive (Mj cone ratio varies with retinal location in five color-normal males. Measurements were made a t 0 degrees, 25 degrees, and 40 degrees in the temporal retina. The HFP spe ctral sensitivities were fitted with a linear combination of L and M cone s ensitivity functions derived from the Stockman and Sharpe(1) cone fundament als, according to genotype. For the white (6500 K, 3 log Td) adapting field conditions, the deduced UM cone ratios of each subject were nearly constan t at all measured eccentricities, with individual values ranging from 0.9:1 to 3.4:1. (C) 2000 John Wiley & Sons, Inc.