Macular pigment and its contribution to spatial vision
نویسندگان
چکیده
منابع مشابه
Macular Pigment and Its Contribution to Vision
Three dietary carotenoids, lutein (L), zeaxanthin (Z) and meso-zeaxanthin (MZ) accumulate at the central retina (macula), where they are collectively referred to as macular pigment (MP). MP's pre-receptoral absorption of blue light and consequential attenuation of the effects of chromatic aberration and light scatter are important for optimal visual function. Furthermore, antioxidant activity o...
متن کاملSpatial profile of macular pigment and its relationship to foveal architecture.
PURPOSE Macular pigment (MP) is composed of two dietary carotenoids, lutein and zeaxanthin, and a carotenoid generated by the retina, meso-zeaxanthin. There is large intersubject variability in peak optical density, spatial profile, and lateral extent of macular pigment, and it has been suggested that foveal architecture may play a role in this variability. This study is an initial investigatio...
متن کاملEnhancing performance while avoiding damage: a contribution of macular pigment.
PURPOSE To compare action spectra for visual discomfort in the fovea and the parafovea and to determine the effect of macular pigment (MP). METHODS Visual discomfort thresholds to lights from 440 to 600 nm were obtained for six young (<35 y), visually normal subjects with a wide range of MP densities (0.10-0.71 at 30' eccentricity). Foveal and parafoveal conditions were assessed. Discomfort t...
متن کاملMacular pigment spatial profiles in South Asian and white subjects.
PURPOSE Variability in central macular pigment optical density (MPOD) has been reported among healthy individuals. These variations seem to be related to risk factors of AMD, such as female sex, smoking, and ethnicity. This study investigates variations in the spatial profiles of MPOD among ethnicities. METHODS Using heterochromatic flicker photometry (HFP), MPOD was measured at seven retinal...
متن کاملMacular pigment: its associations with color discrimination and matching.
PURPOSE Macular pigment (MP) acts as a prereceptoral filter which selectively absorbs short wavelengths. It has the potential to alter color vision but the literature is conflicting on whether it does and, if so, to what extent, possibly reflecting differences between color mechanisms and color tests. This study was designed to identify and investigate relationships, if any, between MP optical ...
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ژورنال
عنوان ژورنال: Acta Ophthalmologica
سال: 2008
ISSN: 1755-375X
DOI: 10.1111/j.1755-3768.2008.644.x