The spatial distribution of the optical density of the human macular pigment measured by two-wavelength autofluorescence imaging exhibits in over half of the subjects an annulus of higher density superimposed on a central exponential-like distribution. This annulus is located at about 0.7° from the fovea. Women have broader distributions than men, and they are more likely to exhibit this bimodal distribution. Maxwell's spot reported by subjects matches the measured distribution of their pigment. Evidence that the shape of the foveal depression may be gender related leads us to hypothesize that differences in macular pigment distribution are related to anatomical differences in the shape of the foveal depression.
© 2006 Optical Society of America
Vision, Color, and Visual Optics
Original Manuscript: June 10, 2005
Manuscript Accepted: August 4, 2005
Vol. 1, Iss. 4 Virtual Journal for Biomedical Optics
François C. Delori, Douglas G. Goger, Claudia Keilhauer, Paola Salvetti, and Giovanni Staurenghi, "Bimodal spatial distribution of macular pigment: evidence of a gender relationship," J. Opt. Soc. Am. A 23, 521-538 (2006)