Abstract

Haidinger’s brushes (HB) are entoptic phenomena resulting from differential absorption of linear polarized light by the human macula. Computational models have assisted in understanding the behavior of these subjective phenomena but have been limited in their application. This study presents a revised computational model that incorporates known determinants of the form and behavior of HB. The model generates both static and animated simulations of HB that can be quantified by their density, contrast, and radial/circumferential extent. Measured physiological parameters are used to demonstrate the dependency of HB on macular pigment (MP) density, MP distribution, and ocular retardation. Physiological variations in these parameters explain the reported variations in the perception of HB.

© 2018 Optical Society of America

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References

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Supplementary Material (5)

NameDescription
» Visualization 1       Simple HB simulation with no corneal retardation. Density function type E.
» Visualization 2       HB simulation with typical corneal retardation of 50 nm (axis horizontal). Other details as in Visualization 1.
» Visualization 3       HB simulation with high corneal retardation of 100 nm (axis horizontal). Other details as in Visualization 1.
» Visualization 4       HB simulation with high corneal retardation of 100 nm (axis at 15 degrees anticlockwise from horizontal). Other details as in Visualization 1.
» Visualization 5       HB simulation with “quarter wavelength” retardation of 115 nm at an observing wavelength of 460nm (axis horizontal). Other details as in Visualization 1.

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Figures (4)

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