摘要
目的:运用Sheard 准则和Percival 准则对近阅读视疲劳等双眼视失平衡症状进行评估,从而探讨Sheard 准则和Percival 准则的显著性和特异性及其临床意义。方法:对53 位大学生进行眼屈光检查,同时检测远近分离性隐斜,远近辐辏,正相对调节,负相对调节,辐辏近点,调节幅度等眼动参数并以问卷形式搜集个体的双眼视症状。计算AC/A参数,绘制每个个体的双眼单视清晰区并检测其对Sheard 准则和Percival 准则的符合性。结果:Sheard 准则对双眼视症状的显著性为80% ,特异性为59% ,而Percival 准则对双眼视症状的显著性为50% ,特异性为77% 。结论:Sheard 准则和Percival 准则为评价双眼水平位均衡的有效方法。Sheard 准则有高度的显著性,特别对于外隐斜者;而percival 准则有较高的特异性。
Objective:This study uses Sheard and Percival criteria to evaluate binocular symptoms and analyze the significance and specificity of these criteria.Methods:Fifty-three college students were randomly selected.For each subject,manifest refraction,distance and near disassociated phoria,negative relative accommodation,positive relative accommodation,and near point convergence were measured.Binocular symptoms were ascertained for each subject through a questionnaire.We plotted the zone of clear single binocular vision (ZCSBV) for each subject and used the Sheard criterion and Percival criterion to predict asthenopic symptoms.Results:Sheard criterion had higher sensitivity (80%) than Percival criterion (59%) in predicting binocular symptoms,especially with exophoria.However,Percival criterion had higher specificity(77%) than Sheard criterion(50%).More subjects with severe binocular symptoms did not meet criterion than those who only had minor binocular vision symptoms.Conclusion:Sheard and Percival criteria are effective diagnostic aids or guides to predict ocular symptoms.Sheard criterion had a greater sensitivity than Percival criterion in predicting binocular symptoms,especially in exophoria but Percival criterion had higher specificity than Sheard criterion.
出处
《眼视光学杂志》
1999年第4期230-233,共4页
Chinese Journal of Optometry & Ophthalmology
基金
浙江省自然科学基金
青年人才专项基金