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A new computer program for mass screening of visual defects in preschool children
D Briscoe1, T Lifshitz, M Grotman
1Department of Ophthalmology, Soroka Medical Centre, Ben-Gurion University of the Negev, Beer-Sheba, Israel.
The British Journal of Ophthalmology
|June 26, 1998
Summary
A PC computer program effectively screens preschool children for vision disorders, showing high agreement with standard tests for stereopsis and visual acuity. This tool can aid non-trained personnel in early detection, though it complements rather than replaces professional eye exams.
Area of Science:
- Ophthalmology
- Pediatric Vision Screening
- Computer-Aided Diagnostics
Background:
- Vision disorders in preschool children can lead to long-term visual impairment.
- Early detection and intervention are crucial for effective treatment.
- Current screening methods may require trained personnel and specialized equipment.
Purpose of the Study:
- To evaluate a PC computer program for detecting vision disorders in preschool children.
- To determine the prevalence of visual impairment in a sample of preschool children in Beer-Sheba, Israel.
- To assess the program's usability by non-trained personnel.
Main Methods:
- 292 preschool children (aged 4-6) were tested using the computer program and standard "gold standard" tests.
- Visual acuity (Snellen charts) and stereopsis (random dot stereograms) were compared.
- Sensitivity, specificity, and predictive values were calculated.
Main Results:
- High agreement between computer and gold standard tests for visual acuity (83%) and stereopsis (97.3%).
- Computer stereogram sensitivity was 50% with 98.9% specificity; visual acuity test sensitivity was 81.5% with 83% specificity.
- Prevalence: 27.7% had visual acuity ≤6/12, 28% lacked stereopsis, and 5% had fusion impairment.
Conclusions:
- The computer program is engaging, quick, and user-friendly for non-trained personnel.
- It serves as a valuable supplementary screening tool for teachers and parents.
- The program does not replace comprehensive eye examinations by professionals.