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  • Title: [Development of impaired vision in mentally handicapped children].
    Author: Bothe N, Lieb B, Schäfer WD.
    Journal: Klin Monbl Augenheilkd; 1991 Jun; 198(6):509-14. PubMed ID: 1895719.
    Abstract:
    The aim of the following study was 1) to show the incidence of ophthalmic disorders in severely visually and mentally handicapped children retrospectively 2) to follow up the change in visual acuity over at least 2 years prospectively 3) to look at the effect of therapeutic concepts. 270 children of the "Blindeninstituts-stiftung Würzburg" were followed up between 1960 and 1987. ad 1) Optic atrophy was the leading cause of visual impairment (24%) followed by cataract and retinopathy of prematurity (both found in 17%), malformations of the anterior segment (12%), cortical amblyopia (8%) and refractive error (6%). Strabismus was an additional finding in 38% of the children often associated with nystagmus. Convergent and divergent strabismus had the same incidence. ad 2) Visual acuity improved in 30% of cases of cortical amblyopia, in 40% of refractive errors and in 30% of optic atrophy. In cases of cataract there was a slight improvement in 20%. In 24% of aphakia a secondary glaucoma was observed. In cases of malformations of the anterior segment and ROP the visual acuity remained stable on a low level. The cases of ROP were advanced and had not received any surgical treatment. A deterioration in vision as often seen after surgical intervention was observed in 20% of ROP. In respect of the high incidence of refractive errors and orthoptic problems in multiple handicapped children they should be seen as early as possible by an ophthalmologist. Detection of a congenital cataract soon after birth as well as complications of other disorders should help to prevent blindness. The remaining visual perception is especially important for the handicapped child to communicate and move about.
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