Objective To evaluate the Spot vision screener for its testability and reliability of refractive data and its effectiveness in detecting refractive amblyopia risk factors in preschoolers. Methods This was a prospective study. One hundred forty-four children (mean age 3.0±1.2 years) were tested with Spot prior to an examination by a pediatric ophthalmologist. Agreement between screenings and cycloplegic refraction measurements were assessed using a t-test and a Pearson correlation for analysis. Sensitivity, specificity, positive predictive value, and negative predictive value for detection of refractive amblyopia risk factors were determined using the 2013 AAPOS vision screening committee referral guidelines. Results The Spot vision screener produced a computer printout result for 96.5% of the children, and provided refractive and eye position estimates in all computer printouts. Compared with cycloplegic retinoscopy, the device underestimated hyperopia or overestimated myopia (-1.32 D) and overestimated astigmatism(+0.39 D). The Pearson correlation coefficient for sphere and cylinder measures indicated good agreement between Spot and cycloplegic retinoscopy. Spot sensitivity was 90.9%, specificity was 82.1%, the positive predictive value was 48.8%, and the negative predictive value was 98% in detecting refractive amblyopia risk factors. Conclusion The Spot vision screener provides clinical data on a greater percentage of preschool children. The device is able to provide binocular refraction estimates and refractions with Spot agree more closely with cycloplegic refraction measurements. Spot is considered a useful device for screening refractive amblyopia risk factors.
孙丽颖,丁刚,李雪,等. Spot视觉筛查仪在学龄前儿童屈光筛查中的应用. 中华眼视光学与视觉科学杂志, 2016, 18(8):469-472. DOI:DOI:10.3760/cma.j.issn.1674-845X.2016.08.005.
Sun Liying*,Ding Gang,Li Xue,et al. Evaluation of the Spot vision screener for refractive screening in preschoolers. Chinese Journal of Optometry Ophthalmology and Visual science, 2016, 18(8):469-472.
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