Journal article
Distribution and progression of add power among people in need of near correction
X Han, PY Lee, C Liu, M He
Clinical and Experimental Ophthalmology | WILEY | Published : 2018
DOI: 10.1111/ceo.13301
Abstract
Importance: This study helps to better understand the need and trend in presbyopic add power in the aging society. Background: Distribution and progression of presbyopic add power in East Asian population is largely unknown. Design: Prospective cohort study. Participants: About 303 participants from a population-based study of residents aged 35 years and older in Guangzhou, China. Methods: Visual acuity (VA) test and non-cycloplegic automated refraction were performed at baseline in 2008 and the 6-year follow-up per standardized protocol. Participants with presenting near VA ≤ 20/40 underwent distance subjective refraction and add power measurement by increasing plus lens at a standard dista..
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Awarded by National Institutes of Health
Funding Acknowledgements
This study was supported by the World Health Organization, Geneva, Switzerland (under National Institutes of Health, Bethesda, MD, contract No. N01-EY-2103) and the by Fundamental Research Funds of the State Key Laboratory of Ophthalmology at the Zhongshan Ophthalmic Center. Prof. He receives support from the University of Melbourne at Research Accelerator Program and the CERA Foundation. The Centre for Eye Research Australia receives Operational Infrastructure Support from the Victorian State Government. The sponsor or funding organization had no role in the design or conduct of this research.