Safety of Spectacles for Children's Vision: A Cluster-Randomized Controlled Trial
Xiaochen Ma, Nathan Congdon, Hongmei Yi, Zhongqiang Zhou, Xiaopeng Pang, Miriam E Meltzer, Yaopang Shi, Mingguang He, Yizhi Liu, Scott Rozelle
American Journal of Ophthalmology | ELSEVIER SCIENCE INC | Published : 2015
PURPOSE: To study safety of children's glasses in rural China, where fear that glasses harm vision is an important barrier for families and policy makers. DESIGN: Exploratory analysis from a cluster-randomized, investigator-masked, controlled trial. METHODS: Among primary schools (n = 252) in western China, children were randomized by school to 1 of 3 interventions: free glasses provided in class, vouchers for free glasses at a local facility, or glasses prescriptions only (Control group). The main outcome of this analysis is uncorrected visual acuity after 8 months, adjusted for baseline acuity. RESULTS: Among 19 934 children randomly selected for screening, 5852 myopic (spherical equivalen..View full abstract
ONESIGHT (MASON, OHIO), LUXOTTICA-CHINA (SHANGHAI); ESSILOR-CHINA (SHANGHAI); CREDIT LYONAIS Securities Asia (Asia Pacific Markets; Hong Kong); Charity Aid Foundation (Sydney); and an anonymous donor (Hong Kong). Dr Congdon is supported by a Thousand Man Plan grant from the Chinese government, and by the Ulverscroft Foundation. The free spectacles used in this study were supplied by OneSight, Luxottica-China, and Essilor-China, producers of frames and lenses in China, who also provided financial support for the study. Financial disclosures: The following authors have no financial disclosures: Xiaochen Ma, Nathan Congdon, Hongmei Yi, Zhongqiang Zhou, Xiaopeng Pang, Mirjam E. Meltzer, Yaojiang Shi, Mingguang He, Yizhi Liu, and Scott Rozelle. All authors attest that they meet the current ICMJE criteria for authorship.