Directional model analysis of the spectral reflection from the fovea and para-fovea

Tos T. J. M. Berendschot*, Jan van de Kraats, Martijn J. Kanis, Dirk van Norren

*Corresponding author for this work

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Abstract

Directional and nondirectional spectral reflection data from 0, 1, 2, 4, and 8 deg eccentricity, and the optic disk, were analyzed from 400 to 950 nm with an existing optical reflection model. The optical model, developed for the fovea, appeared to be also suitable for more eccentric locations. The optical densities of melanin and of the macular pigments zeaxanthin and lutein peaked in the fovea, in correspondence with literature data. The amplitude of the directional component, originating in the cone photoreceptors, had its maximum at 1 deg. The maximum of the directionality (peakedness) occurred at a slightly higher eccentricity.
Original languageEnglish
Article number65005
JournalJournal of Biomedical Optics
Volume15
Issue number6
DOIs
Publication statusPublished - 2010

Keywords

  • fundus reflectance
  • macular pigment
  • lutein
  • zeaxanthin
  • Stiles-Crawford
  • photoreceptor

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