Evaluation of stereo tests for screening of amblyopia
Joint Authors
Source
Iranian Red Crescent Medical Journal
Issue
Vol. 9, Issue 2 (30 Apr. 2007), pp.80-85, 6 p.
Publisher
Publication Date
2007-04-30
Country of Publication
United Arab Emirates
No. of Pages
6
Main Subjects
Topics
Abstract EN
Background: One of the most dramatic sensory ocular anomalies is the low visual acuity of one eye known as amblyopia.
The goal of preschool vision screening is to detect children with amblyopia.
Stereopsis is an important indicator of the state of binocularity.
Previous studies showed a disagreement on the reliability of stereo tests as screening tools for amblyopia.
This study was performed to compare visual acuity testing with the ability of TNO, Titmus and Randot stereo tests for detection of amblyopia. Methods: A total of 1000 pupils, aged 6-12 years were examined in a field study in Shiraz. In addition to the 3 stereo tests of TNO, Titmus and Randot, the examination included visual acuity, cover testing and inspection of red reflex.
According to definite fail pass criteria, abnormal cases were referred to pediatric eye clinic for complete eye physical examination. Similar to the first part, in the second part of the study, 100 amblyopic students aged 6-12 years, were referred to pediatric eye clinic for complete physical examination.
Sensitivity and specificity of each stereo test for detection of amblyopia was calculated. Results: In screening situation, the sensitivity of stereo tests was 55.5% for TNO with a cutoff point of 240", 48.8% for Titmus with a cutoff point of 70" and 44.4% for Randot stereo test with cutoff point of 100".
Specificity of these tests in screening situation was 86.9%, 94.4%, and 98.4% respectively.
The respective sensitivity of these stereo tests in clinical situation was 74%, 68%, and 62%. Conclusion: Considering these fail-pass criteria, none of the TNO, Titmus, and Randot stereo tests can be recommended as a screening method for detection of amblyopia in children.
American Psychological Association (APA)
Farvardin, M.& Afarid, M.. 2007. Evaluation of stereo tests for screening of amblyopia. Iranian Red Crescent Medical Journal،Vol. 9, no. 2, pp.80-85.
https://search.emarefa.net/detail/BIM-29040
Modern Language Association (MLA)
Farvardin, M.& Afarid, M.. Evaluation of stereo tests for screening of amblyopia. Iranian Red Crescent Medical Journal Vol. 9, no. 2 (Apr. 2007), pp.80-85.
https://search.emarefa.net/detail/BIM-29040
American Medical Association (AMA)
Farvardin, M.& Afarid, M.. Evaluation of stereo tests for screening of amblyopia. Iranian Red Crescent Medical Journal. 2007. Vol. 9, no. 2, pp.80-85.
https://search.emarefa.net/detail/BIM-29040
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 84-85
Record ID
BIM-29040