Journal article
Prevalence and incidence of presbyopia in urban Southern China
X Han, PY Lee, S Keel, M He
British Journal of Ophthalmology | BMJ PUBLISHING GROUP | Published : 2018
Abstract
Aims To investigate the prevalence and incidence of presbyopia in an urban Chinese population. Methods 1817 subjects aged ≥35 years were identified by random cluster sampling in Yuexiu District, Guangzhou, China, at baseline in 2008, and all were invited for the follow-up examination in 2014. Distance and near visual acuity (VA) tests, as well as non-cycloplegic automated refraction were performed at each examination as per standardised protocol. Participants with presenting near VA ≤20/40 were further tested with add power at a standard distance of 40 cm to obtain their best-corrected near VA. Functional presbyopia was defined as near VA under presenting distance refraction correction of <2..
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Awarded by National Institutes of Health
Funding Acknowledgements
This study was supported by the WHO, Geneva, Switzerland (under National Institutes of Health, Bethesda, Maryland, USA, contract No. N01-EY-2103) and the by Fundamental Research Funds of the State Key Laboratory of Ophthalmology at the Zhongshan Ophthalmic Center. Professor 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 organisation had no role in the design or conduct of this research.