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Macular pigment assessment using a colour monitor
Author(s) -
Moreland J. D.,
Robson A. G.,
Kulikowski J. J.
Publication year - 2000
Publication title -
color research and application
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.393
H-Index - 62
eISSN - 1520-6378
pISSN - 0361-2317
DOI - 10.1002/1520-6378(2001)26:1+<::aid-col56>3.0.co;2-6
Subject(s) - pigment , optometry , computer science , ophthalmology , chemistry , medicine , organic chemistry
Two experiments were performed to determine the effectiveness of the blue and green phosphor emissions of a colour monitor as stimuli for macular pigment (MP) assessment by flicker photometry. (1) A subject with very little MP made foveal and extrafoveal (5°) minimum flicker matches through calibrated carotenoid solutions simulating MP in the 0.0–0.5 peak absorbance range. (2) Six subjects with different MP complements (foveal 0.16–0.75 peak absorbance range) determined their MP retinal profiles in the 0–7° eccentricity range by flicker photometry on the monitor and, for comparison, by motion photometry using narrowband stimuli on the Moreland anomaloscope. Pigment absorbances deduced from changes in the blue/green phosphor luminance ratio are smaller (≈50%) than comparison values obtained either for the calibrated solutions or by motion photometry. A model that incorporates the full spectral emissions of the monitor phosphors accounts for these results and, thus, provides a means of calibration. The model also reveals a small effect of the aging lens. Within these constraints, flicker photometry with the blue and green phosphors of a monitor can be used to assess MP in different individuals. © 2000 John Wiley & Sons, Inc. Col Res Appl, 26, S261–S263, 2001