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Visual problems as a result of brain damage in children
  1. G N Dutton,
  2. E C A McKillop,
  3. S Saidkasimova
  1. Royal Hospital for Sick Children, Yorkhill, Glasgow, UK
  1. Correspondence to: Gordon N Dutton Royal Hospital for Sick Children, Yorkhill, Glasgow, UK; claire.condron{at}

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Affected children include those with cerebral palsy, who may or may not have learning difficulties, and those with profound brain damage causing cerebral blindness

Damage to the brain is the commonest cause of visual impairment in children in developed countries.1 Improved survival of premature infants has increased the prevalence of periventricular leucomalacia, and greater success in managing profoundly ill children has led to increased survival of children with meningitis, encephalitis, and hypoxic ischaemic encephalopathy. Hydrocephalus is now also successfully treated, while congenital disorders of the brain add to the prevalence of brain dysfunction.2 On the other hand, early treatment of cataract, the successful management of glaucoma, screening for retinoblastoma, and effective immunisation for rubella have all decreased the prevalence of blindness in children as a result of eye disorders.

A large proportion of the brain serves visual function. The cerebral cortex, underlying white matter, and (during early visual development) the basal ganglia3 all play a major part. The classic view is that the visual system comprises the anterior visual pathways, the lateral geniculate bodies, the optic radiations, and the occipital cortices wherein the process of “vision” takes place. Disruption of these pathways may result in restricted visual fields and impairment in visual acuity. The article by Lowery et al in this issue (p 960)4 highlights the importance of having a high index of suspicion when a child presents with undiagnosed poor visual function. Cerebral …

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  • The terms cortical and cerebral visual impairment are currently employed interchangeably in the literature. Lowery et al have chosen to use the term cortical visual impairment. However, as this review concerns impaired vision caused by damage to brain tissue in addition to the cortex, the term cerebral visual impairment has been chosen.

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