ارزیابی سنجش نزدیک بینی در دانش آموزان توسط مربیان بهداشت با استفاده از E-Chart بعنوان یک تست غربالگری

A study was carried out to evaluate E-Chart as a screening test for detecting myopia in school’s children in Hamadan, Iran A sample of 878 pupils was tested by a school nurse using E-Chart. According to the test, children with myopia were categorized in two group of negative and positive. All children who were categorized as positive and also a sample of negative and positive. All children who were categorized as positive and also a sample of, were referred to an optometrist, for diagnosis. According to the screening test and diagnosis, children categorized in four groups of true positive, fals positive , true negative and false negative. Sensitivity, specificity, positive predictive value and negative predictive value were calculated for the data. The results showed that the sensitivity, specificity, positive predictive value and negative predictive value for myopia are 85%, 99% , 87.7% and 98.9% respectively.