Macular pigment optical density in young Chinese adults

Churk Yan Tang, Hoi Shan Yip, Ming Yeung Poon, Wai Lam Yau, Keng Hung Maurice Yap

Research output: Journal article publicationJournal articleAcademic researchpeer-review

18 Citations (Scopus)

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.
Original languageEnglish
Pages (from-to)586-593
Number of pages8
JournalOphthalmic and Physiological Optics
Volume24
Issue number6
DOIs
Publication statusPublished - 1 Nov 2004

Keywords

  • Chinese
  • Heterochromatic photometry
  • Macular pigment
  • Optical density

ASJC Scopus subject areas

  • Ophthalmology
  • Optometry
  • Sensory Systems

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