The Differential Contribution of Macular Pigments and Foveal Anatomy to the Perception of Maxwell’s Spot and Haidinger’s Brushes-Reference-Cited by-同舟云学术

The Differential Contribution of Macular Pigments and Foveal Anatomy to the Perception of Maxwell’s Spot and Haidinger’s Brushes

Published:2023-02-06 Issue:1 Volume:7 Page:11
ISSN:2411-5150
Container-title:Vision
language:en
Short-container-title:Vision

Author:

Misson Gary P.¹^ORCID,Heitmar Rebekka²^ORCID,Armstrong Richard¹,Anderson Stephen J.¹^ORCID

Affiliation:

1. School of Optometry, College of Health & Life Sciences, Aston University, Birmingham B4 7ET, UK

2. Department of Optometry and Vision Sciences, Centre for Vision across the Life Span, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UK

Abstract

The relationship of macular pigments and foveal anatomy to the perception of Maxwell’s spot (MS) and Haidinger’s brushes (HB) entoptic phenomena were investigated. Dual-wavelength-autofluorescence and OCT were used to define macular pigment density and foveal anatomy in 52 eyes. MS was generated by alternating unpolarized red/blue and red/green uniform field illumination. HB was generated by alternating the linear polarization axis of a uniform blue field. In Experiment 1, horizontal widths of MS and HB were measured using a micrometer system and compared with macular pigment densities and OCT-defined morphometry. MS radius (mean 1.4°) was significantly less than HB radius (mean 1.6°), with the spatial extent of both phenomena falling between the boundaries of the foveola and foveal pit. Multiple regression showed MS and HB radii to be significantly associated with the macular pigment spatial profile radius. HB radius, but not MS radius, was also significantly associated with foveolar morphometry. Experiment 2 compared perceptual profiles of MS with macular pigment distribution patterns and demonstrated close agreement. The size and appearance of MS is a direct indicator of macular pigment density and distribution. Measures of HB radii are less specific, with dependence on both macular pigment density and foveal structure.

Publisher

MDPI AG

Subject

Cell Biology,Cognitive Neuroscience,Sensory Systems,Optometry,Ophthalmology

Link

https://www.mdpi.com/2411-5150/7/1/11/pdf

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