This study aimed to determine the prevalence and type of ametropia in Yunnan multi-ethnic regions. The study included 24,296 students aged 7-12 years (90.99%) in the study area of five different regions. There were 51% males and 32.2% minorities. Ametropia was present in 3406 (19%) which averaged -2.50D (right) and -2.25D (left). 77.5% had no correction; 18% were myopic, 0.8% hypermetropic and 0.2% mixed. Girls were more myopic than boys and myopia increased with age. A lower myopic prevalence was found and attributed to an under-developed economy and education, sufficient outdoor illumination and a rural village environment. Three quarters had never had refractive correction which needs to feed to government screening strategies for eye health.
Ametropia prevalence and types in China
Reviewed by Fiona Rowe
Ametropia prevalence of primary school students in Chinese multi-ethnic regions.
CONTRIBUTOR
Fiona Rowe (Prof)
Institute of Population Health, University of Liverpool, UK.
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