Accuracy of rural refractionists in western China

Zhongqiang Zhou, Junxia Zeng, Xiaochen Ma, Xiaopeng Pang, Hongmei Yi, Qianyun Chen, Mirjam E. Meltzer, Mingguang He, Scott Rozelle, Nathan Congdon*

*Corresponding author for this work

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)154-161
Number of pages8
JournalInvestigative Ophthalmology and Visual Science
Volume55
Issue number1
DOIs
Publication statusPublished - 10 Dec 2013

Keywords

  • Accuracy
  • China
  • Optometrist
  • Refraction
  • Refractionist
  • Rural

ASJC Scopus subject areas

  • Ophthalmology
  • Sensory Systems
  • Cellular and Molecular Neuroscience

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  • Cite this

    Zhou, Z., Zeng, J., Ma, X., Pang, X., Yi, H., Chen, Q., Meltzer, M. E., He, M., Rozelle, S., & Congdon, N. (2013). Accuracy of rural refractionists in western China. Investigative Ophthalmology and Visual Science, 55(1), 154-161. https://doi.org/10.1167/iovs.13-13250