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Visual acuity, residual amblyopia and ocular pathology in a screened population of 12-13-year-old children in Sweden
J Ohlsson1, G Villarreal, A Sjöström
1Department of Ophthalmology, Insititute of Clinical Neuroscience, Göteborg University, Göteborg, Sweden. josefin@oft.gu.se
Purpose:
To establish the distribution of visual acuity and the prevalence of residual amblyopia and other ocular disorders in a vision-screened population group of 12-13-year-old children.
Methods:
In total 1046 children were examined in a field study in Sweden. The examination included visual acuity, stereopsis, cover testing, red reflex, refractive retinoscopy and examination of the posterior pole. In selected cases VEP was also performed.
Results:
Visual acuity > or =1.0 in at least one eye was present in 98% of cases. Residual amblyopia (< or =0.5) was found in 1.1% of the population. Manifest strabismus was found in 2.7%. There were only a small number of ocular opacities and posterior pole abnormalities. Ocular albinism was found in 7 cases. In 15 children the cause of subnormal VA was unexplained.
Conclusion:
Results for visual acuity, residual amblyopia and other ocular disorders are very similar to previous Nordic, vision-screened populations.
