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目的探察我国学龄前儿童屈光不正性弱视病因中远视因素的筛查临界值和诊断临界值。方法诊断性试验,5～7岁单纯远视633眼(附带散光<0.50DC);远视伴轻度散光312眼(0.50DC≤散光<1.00DC),用ROC (Receiver Operating Characteristic,受试者工作特征)曲线找出临界值。结果单纯远视的筛查临界值是2.00DS,诊断临界值是2.75DS;远视带轻度散光的结果中最大径线值同单纯远视的结果。结论5～7岁儿童中,远视引起弱视的最佳筛查临界值是球镜或最大径线≥2.00DS;远视引起弱视的诊断临界值是远视或最大径线≥2.75DS。
Objective To explore screening thresholds and diagnostic thresholds of presbyopia factors in preschool children with amblyopia in China. Methods Diagnostic tests included 633 eyes of 5 ~ 7 years old with hyperopic astigmatism (with astigmatism <0.50DC), hyperopia with 312 cases of mild astigmatism (0.50DC≤astigmatism <1.00DC), receiver operating characteristic (ROC) ) Curve to find the critical value. The results of simple hyperopia screening threshold is 2.00DS, the diagnostic threshold is 2.75DS; hyperopia with astigmatism in the results of the maximum radial line value with simple hyperopia results. Conclusions The best screening threshold for hyperopia-induced amblyopia in children aged 5-7 years is spherical or maximal diameter ≥2.00DS. The diagnostic threshold for hyperopia-induced amblyopia is hyperopia or maximal diameter≥2.75DS.