Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/16729
Title: Macular pigment optical density in young Chinese adults
Authors: Tang, CY
Yip, HS
Poon, MY
Yau, WL
Yap, MKH 
Keywords: Chinese
Heterochromatic photometry
Macular pigment
Optical density
Issue Date: 2004
Publisher: Wiley-Blackwell
Source: Ophthalmic and physiological optics, 2004, v. 24, no. 6, p. 586-593 How to cite?
Journal: Ophthalmic and physiological optics 
Abstract: Purpose: The purpose of this study was to determine the macular pigment optical density (MPOD) in a group of Chinese subjects using a simple customized light emitting diode-based device. Methods: Heterochromatic flicker photometry was used in this study. With a 1° diameter circular test stimulus, MPOD was estimated by comparing the relative sensitivities to a blue light, against a green reference, between foveal and parafoveal 4° temporal locations. Fixed alternating frequencies were used. Repeatability was determined on a small group of subjects. A further group of 67 young healthy subjects provided data for MPOD norms. Results: All results were corrected to the common MPOD reference wavelength of 460 nm. The group-averaged MPOD was 0.48 (S.D. 0.23). We found no gender difference in MPOD. The coefficient of variability was 7.2-8.0% and the coefficient of repeatability was 0.12. Conclusions: The MPOD of Chinese subjects did not differ greatly from the reported MPOD in white subjects.
URI: http://hdl.handle.net/10397/16729
ISSN: 0275-5408
EISSN: 1475-1313
DOI: 10.1111/j.1475-1313.2004.00242.x
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