Work

Macular Pigment Optical Density Is Not Associated with Contrast Sensitivity When Measured with 520 nm Monochromatic Stimuli

Year: 2026

Type: article

Abstract: Macular pigments (MP; lutein, zeaxanthin, and meso-zeaxanthin) filter short-wavelength light and have been linked to reduced glare and enhanced visual performance. Whether macular pigment optical density (MPOD) is associated with contrast sensitivity (CS) under conditions of minimal MP absorption remains unclear. Fifty-two adults (mean age = 23.5 ± 8.0 years; range = 18–58 years; 85% < 25 years) participated. MPOD was measured using customized heterochromatic flicker photometry. CS was assessed monocularly in the same eye at five spatial frequencies (1.6, 3.2, 8, 16, and 24 cycles/degree), using a custom optical system with narrowband 520 nm laser stimuli. No significant correlations were found between MPOD and CS at any spatial frequency (all |r| ≤ 0.08, all p ≥ 0.59), including when individual area estimates were made for each participant’s curve (area under the logged CSF). Separate partial correlations controlling for iris lightness or habitual visual correction were also non-significant. Although MP has been shown to be related to CS when measured under glare or blue haze conditions, these findings suggest that when filtering by MP is minimized, direct effects on CS, especially on the young healthy eye, are likely minimal.

Source: Vision

DOI: 10.3390/vision10040081

Authors: Jeffrey Nightingale, Cameron Wysocky, Jacob Harth, Lisa Renzi-Hammond, Billy R. Hammond

Institution: University of Georgia

Language: English

Topic: Visual perception and processing mechanisms

Subfield: Cognitive Neuroscience

Field: Neuroscience

Domain: Life Sciences

SDG: Good health and well-being

Open Access status: gold

Estimated APC paid: $1,930