SENSITIVITY AND SPECIFICITY OF SCREENING TEST OF SNELLEN CHART, APPLIED FOR AMBLYOPIA AMONG 6-10 YEAR OLD CHILDREN

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HESHMAT RAMIN; SHARIFI N.A.D.; SALARILAK SH.; AGHDAMI N.; RAHIMI ALI

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Journal: Studies in Medical Sciences Year:2007 | Volume:18 | Issue:1 Page(s): 373-378

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Title

SENSITIVITY AND SPECIFICITY OF SCREENING TEST OF SNELLEN CHART, APPLIED FOR AMBLYOPIA AMONG 6-10 YEAR OLD CHILDREN

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Keywords

AMBLYOPIAQ3

SCREENINGQ3

SNELLEN CHARTQ3

SENSITIVITYQ3

SPECIFICITYQ3

Abstract

Background & Aims: AMBLYOPIA (lazy eye) is one of the most common pediatrics eye diseases and important because of its potential risk of vision threatening condition. Its diagnosis is an occasion and infact SCREENING includes the only effective method to diagnose it in populations. SNELLEN CHART that has been applied in AMBLYOPIA SCREENING program of 6-10 year-old children is one of the most efficient and cost-benefit methods. As other SCREENING programs, it is necessary to determine the efficiency of SCREENING test by estimating SENSITIVITY and SPECIFICITY.Materials & Methods: Two random groups were selected among screen test positive and negative cases and were assessed by gold standard vision test and were separated into two true amblyope and true normal groups to determine SENSITIVITY and SPECIFICITY of the screen test in a 2×2 table. Results: A total of 55551 cases were screened and 2955 subjects (5.3%) had positive result in screen test, and the rest were negative. Among 300 randomly selected cases from test positives, 126 cases were truly positive and 174 cases were normal. And also among 263 randomly selected cases from test negatives, 6 cases were amblyope and 257 cases were truly negative. So SENSITIVITY and SPECIFICITY of the screen test were calculated 95.45% and 54.63%, respectively. conclusion: So it seems that SNELLEN CHART has a proper SENSITIVITY for SCREENING AMBLYOPIA among 6-10 year-old children but it must be considered that when the test is negative, it does not signify the absence of AMBLYOPIA.

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APA: Copy

HESHMAT, RAMIN, SHARIFI, N.A.D., SALARILAK, SH., AGHDAMI, N., & RAHIMI, ALI. (2007). SENSITIVITY AND SPECIFICITY OF SCREENING TEST OF SNELLEN CHART, APPLIED FOR AMBLYOPIA AMONG 6-10 YEAR OLD CHILDREN. STUDIES IN MEDICAL SCIENCE (THE JOURNAL OF URMIA UNIVERSITY OF MEDICAL SCINCES), 18(1), 373-378. SID. https://sid.ir/paper/64387/en

Vancouver: Copy

HESHMAT RAMIN, SHARIFI N.A.D., SALARILAK SH., AGHDAMI N., RAHIMI ALI. SENSITIVITY AND SPECIFICITY OF SCREENING TEST OF SNELLEN CHART, APPLIED FOR AMBLYOPIA AMONG 6-10 YEAR OLD CHILDREN. STUDIES IN MEDICAL SCIENCE (THE JOURNAL OF URMIA UNIVERSITY OF MEDICAL SCINCES)[Internet]. 2007;18(1):373-378. Available from: https://sid.ir/paper/64387/en

IEEE: Copy

RAMIN HESHMAT, N.A.D. SHARIFI, SH. SALARILAK, N. AGHDAMI, and ALI RAHIMI, “SENSITIVITY AND SPECIFICITY OF SCREENING TEST OF SNELLEN CHART, APPLIED FOR AMBLYOPIA AMONG 6-10 YEAR OLD CHILDREN,” STUDIES IN MEDICAL SCIENCE (THE JOURNAL OF URMIA UNIVERSITY OF MEDICAL SCINCES), vol. 18, no. 1, pp. 373–378, 2007, [Online]. Available: https://sid.ir/paper/64387/en

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