A preliminary survey of the causes of blindness in mentally retarded children in Denmark showed that 50% of the children had optic atrophy, 12.5% had cataract while tapeto-retinal degenerations, other malformations and retrolental fibroplasia each represents 8–9% of the causes of blindness. The survey, was done through written notification and some patients with tapeto-retinal degenerations might have been wrongly diagnosed.
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Warburg, M. Blindness in mentally retarded children. Doc Ophthalmol 39, 343–349 (1975). https://doi.org/10.1007/BF00578766
- Public Health
- Optic Atrophy
- Preliminary Survey