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	Accuracy of Rural Refractionists in Western China
	Zhou Z. Q. ; Zeng J. X. ; Ma X. C. ; Pang X. P. ; Yi H. M. ; Chen Q. Y. ; Meltzer M. E. ; He M. G. ; Rozelle S. ; Congdon N.
	2014
关键词	China rural refractionist refraction optometrist accuracy linear mixed models visual impairment school-children southern china error myopia
英文摘要	PURPOSE. We assessed the prevalence and predictors of inaccurate refractive error among rural refractionists in western China. METHODS. A subset of primary school children with visual acuity (VA) <= 6/12 in >= 1 eye, undergoing subjective refinement by local refractionists after cycloplegic autorefraction in an ongoing population-based study, received repeat refraction by university optometrists for quality control. RESULTS. Among 502 children (mean age 10.5 years, 53.2% girls), independent predictors of poor (inaccurate by >= 1.0 diopter [D]) refraction by 21 rural practitioners (66.7% with high school or lower education) included hyperopia (odds ratio [OR], 4.2; 95% confidence interval [CI], 2.4-7.3, P < 0.001), astigmatism (OR = 3.8; 95% CI, 2.5-5.6; P < 0.001) and VA uncorrectable to >6/12 by the rural refractionist (OR = 4.7; 95% CI, 3.1-7.3; P = < 0.001). Among 201 children whose vision was uncorrectable in >= 1 eye by the rural refractionists, vision could be improved to >6/12 by the university optometrist in 110 (54.7%). We estimate vision could be so improved in 9.1% of all children refracted by these rural refractionists. A reason for inaccuracy in this setting is the erroneous tendency of rural refractionists to adjust instrument values for accommodation, even under cycloplegia. CONCLUSIONS. Rural refractionists in western China have little formal training and frequently fail to optimize VA among children, even when autorefractors are used. Training is needed emphasizing better use of automated refraction, particularly in children with astigmatism and hyperopia.
出处	Investigative Ophthalmology & Visual Science
卷	55
期	1
页	154-161
收录类别	SCI
语种	英语
ISSN号	0146-0404
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/29350]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Zhou Z. Q.,Zeng J. X.,Ma X. C.,et al. Accuracy of Rural Refractionists in Western China. 2014.

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