Wavelength dependence of intraocular straylight.
Wavelength dependence of retinal straylight has been a mystery since Stiles in 1929 [Stiles,W.S., 1929. The scattering theory of the effect of glare on the brightness difference threshold. Proc. R. Soc. Lond. (Biol.) 105, 131-41.] supposed it to have the strong Rayleigh type lambda(-4) dependence, typical for small particle light scattering, but which was never found. Using the accurate 'compensation comparison' approach, retinal straylight was measured from 625 to 457 nm. Subjects with a large variety of ocular pigmentation were included. Straylight was found to depend strongly on pigmentation of the eye, in addition to age. Young and well-pigmented eyes (young negroids) show nearly perfect lambda(-4) dependence. With less pigmentation (blue-eyed Caucasians), a red dominated component is added, negating the lambda(-4) dependence.
Coppens
Joris E
JE
The Netherlands Ophthalmic Research Institute, Meibergdreef 47, 1105BA Amsterdam, The Netherlands. j.coppens@ioi.knaw.nl
Franssen
Luuk
L
van den Berg
Thomas J T P
TJ
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000502:physiology; D005127:Eye Color / Q000502:physiology; D005403:Fixation, Ocular / Q000502:physiology; D019466:Glare; D006801:Humans; D008875:Middle Aged; D008954:Models, Biological; D010775:Photic Stimulation; D012160:Retina / Q000502:physiology*; D012542:Scattering, Radiation; D014794:Visual Fields