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Vision Res. 2006 Dec;46(28):4615-22. Epub 2006 Nov 7.

Macular pigment optical density and photophobia light threshold.

Author information

1
Psychology Department, University of New Hampshire, 10 Library Way, Durham, NH 03824, USA. awenzel@unh.edu

Abstract

Light absorption by macular pigment may attenuate visual discomfort, or photophobia, for targets composed of short-wavelength light. Macular pigment optical density (MPOD) and photophobia light thresholds were measured psychophysically in 10 subjects. The energy necessary to induce photophobia for a short-wavelength target relative to a long-wavelength target was linearly related to MPOD, as well as estimates of peak MPOD and integrated macular pigment. In four subjects who consumed lutein supplements, increases in MPOD corresponded to increases in photophobia light thresholds. Light absorption by macular pigment appears to influence the amount of short-wavelength light necessary to elicit photophobia.

PMID:
17087988
DOI:
10.1016/j.visres.2006.09.019
[Indexed for MEDLINE]
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