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Visual development in healthy eyes from 24 months to four years of age
1Department of Ophthalmology, College of Medicine, Sultan Qaboos University, Sultanate of Oman.
Acta Ophthalmologica Scandinavica
|June 1, 1997
Insights
This study tracked visual development in 89 children from 24 months to 4 years. Visual acuity significantly improved with age, reaching 0.77 by age four.
Area of Science:
- Pediatric ophthalmology
- Developmental vision science
Background:
- Assessing visual development in early childhood is crucial for identifying potential issues.
- Standardized tests are needed to accurately measure visual acuity in young children.
Purpose of the Study:
- To document the progression of visual acuity in normal children.
- To establish normative data for visual development between 24 months and 4 years of age.
Main Methods:
- Visual acuity was measured in 89 children aged 24 months to 4 years.
- The O-test was used for ages 24-27 months, and the Kolt-test for ages 28 months to 4 years.
Main Results:
- Mean visual acuity was 0.48 (24-29 months), 0.55 (30-35 months), 0.67 (36-41 months), and 0.77 (3.5-4 years).
- A consistent increase in visual acuity was observed with advancing age.
Conclusions:
- Visual acuity in healthy children shows significant improvement between 2 and 4 years of age.
- The O-test and Kolt-test provide valuable data for tracking visual development in this age range.
Abstract:
The study is of visual development from 24 months to 4 years of age. The O-test was used in children from 24 to 27 months of age; and the Kolt-test from 28 months to 4 years. One measurement was performed in both eyes of 89 normal children aged from 24 months to 4 years. The mean visual acuity was 0.48 at 24 to 29 months; 0.55 at 30 to 35 months; 0.67 at 36 to 41 months; 0.77 at 3 1/2 to 4 years of age.