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Reduction of infant myopia: a longitudinal cycloplegic study
D L Ehrlich1, J Atkinson, O Braddick
1Department of Psychology, University College London, U.K.
Vision Research
|May 1, 1995
Summary
Infant myopia shows significant emmetropization towards hyperopia by age three. Both myopic and control infants experienced reduced astigmatism, indicating natural visual development.
Area of Science:
- Ophthalmology
- Developmental Optometry
Background:
- Infant refractive error development is crucial for visual health.
- Understanding emmetropization pathways in early childhood is key.
Purpose of the Study:
- To compare refractive error changes in myopic and hyperopic infants.
- To investigate emmetropization and astigmatism reduction with age.
Main Methods:
- Cycloplegic retinoscopy was used to measure refraction in two infant groups (myopic and control).
- Refractive data were collected between 8.5 and 38.5 months of age.
- Spherical equivalent, astigmatism, and meridional powers were analyzed.
Main Results:
- Infant myopes demonstrated significant emmetropization towards low hyperopia by 3 years.
- No significant change in mean spherical equivalent was observed in the control group.
- Both groups showed significant age-related astigmatism reduction, affecting both meridians.
Conclusions:
- Infant eyes exhibit a natural tendency towards emmetropization, even in cases of myopia.
- Astigmatism decreases significantly with age in infants, regardless of initial refractive status.