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Macular pigment assessment using a colour monitor

Macular pigment assessment using a colour monitor 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 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Color Research & Application Wiley

Macular pigment assessment using a colour monitor

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References (11)

Publisher
Wiley
Copyright
Copyright © 2001 John Wiley & Sons, Inc.
ISSN
0361-2317
eISSN
1520-6378
DOI
10.1002/1520-6378(2001)26:1+<::AID-COL56>3.0.CO;2-6
Publisher site
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Abstract

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

Journal

Color Research & Application – Wiley

Published: Jan 1, 2001

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