Wavelength dependence of reflectometric cone photoreceptor directionality

article


Zagers, N.P.A.

Berendschot, T.T.J.M.

Norren, D. van
We present evidence for the wavelength dependence of the directionality of light reflected from cone receptor cells (optical StilesCrawford effect): Blue light is more directional than red. According to the waveguide-scattering model of Marcos J. Opt. Soc. Am. A 15 , 2012 (1998), directionality is the sum of a waveguide component and a scattering component. The latter is proportional to 1 over wavelength squared, and it is related to the row-to-row spacing of the cone lattice. Our results allow a firm confirmation of Marcos s theory. For a 1.9-deg foveal area, group mean (n=18) cone spacing was 3.42 m, in good agreement with anatomical data. Group mean waveguide directionality was 0.077 mm 2
Topics

















AberrationsData reductionLight scatteringOptical waveguidesSignal to noise ratioPhotoreceptorsLight reflectionPhysiologyPsychophysicsPupilRadiation exposureRadiation scatteringRetina coneCones (Retina)HumansLightModels, BiologicalScattering, Radiation
TNO Identifier
12702
Repository link
https://resolver.tno.nl/uuid:c506c53a-5188-42af-bf34-eaaccc5010af
Source
Journal of the Optical Society of America A, 20(1), pp. 18 - 23.
Pages
18 - 23
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