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Clinical features of affected males with X linked ocular albinism.
  1. S J Charles,
  2. J S Green,
  3. J W Grant,
  4. J R Yates and
  5. A T Moore
  1. Addenbrooke's Hospital, Cambridge Department of Ophthalmology.

    Abstract

    Seventy four males affected by X linked ocular albinism (XLOA) from 19 pedigrees were examined to assess phenotypic variation and visual prognosis. Nystagmus was present in all cases except one. Best visual acuity ranged from 6/9 to 6/60; 79.7% could see 6/36 or better; most could read N5. Marked iris translucency and foveal hypoplasia were present in all cases. Posterior embryotoxon was present in 30% and dysplastic optic discs were often seen. Pigmentation of the posterior pole was associated with better visual acuity. XLOA is under-diagnosed: almost 20% of cases had been previously diagnosed as having congenital nystagmus until reviewed in this study.

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