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Person et al,1 and Witkop et al,2 suggest global prevalence figures for albinism of 1 in 20 000 and 1 in 17 000, respectively. Person et al's1 figure is widely quoted in the literature but it is unclear how it was derived. Grønskov et al,3 investigated birth prevalence and mutation spectrum in Danish patients with autosomal recessive albinism suggesting a minimum birth prevalence of 1 in 14 000. Similarly Froggatt4 had investigated the occurrence of albinism in Northern Ireland (NI) in 1960 and reported a prevalence of 1 in 10 000. Clearly there are discrepancies in the literature in terms of the prevalence of albinism.
The Northern Ireland Nystagmus and Albinism study
A 3 year study investigating the visual and refractive profile of a population of children and adults with albinism (and control group with nystagmus) took place …