Macular Pigment and Visual Performance in Low-Light Conditions

Investigative Ophthalmology & Visual Science
J M StringhamBrian K Foutch

Abstract

By reducing rod intrusion and improving efficiency of neural signaling throughout the visual system, macular pigment (MP) could improve many aspects of visual performance in low-light level conditions. Our study examined this possibility for a variety of visual performance parameters, including spatial resolution, dark adaptation kinetics, and color detection. Twenty-seven subjects participated in the study. Spatial profiles of MP optical density (MPOD) were determined by using heterochromatic flicker photometry. Mesopic- and scotopic-adaptation level experiments were conducted in Maxwellian view. Subjects with higher MPOD required significantly lower contrast to detect the mesopic-level resolution targets; this effect became stronger with increasing spatial frequency. Dark adaptation recovery times were significantly faster as a function of MPOD (by nearly 2 minutes for the lowest mesopic-level task [high versus low MPOD]; P < 0.001). Absolute scotopic thresholds were also significantly associated with MPOD (P < 0.001). Macular pigment optical density was inversely associated with detection of yellow (P < 0.001), and, paradoxically, approached a significant positive correlation with the detection of blue (P = 0.06). Macular pi...Continue Reading

Citations

Jul 20, 2016·Annual Review of Nutrition·Julie Mares
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Nov 13, 2015·Perception·Nicole T Stringham, James M Stringham
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Jul 10, 2021·Investigative Ophthalmology & Visual Science·Marina Green-GomezJohn Nolan

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