%0 Journal Article %A D J Moran %A F C Hollows %T Pterygium and ultraviolet radiation: a positive correlation. %D 1984 %R 10.1136/bjo.68.5.343 %J British Journal of Ophthalmology %P 343-346 %V 68 %N 5 %X Pterygium has long been believed to be an environmental disease, Ultraviolet (UV) radiation playing a major role in its development. In examination of more than 100 000 Aborigines and non-Aborigines in rural Australia a strong positive correlation between climatic UV radiation and pterygium prevalence was found, providing further evidence of a causal relationship. In addition interesting differences were found in prevalence in the different racial groups and between the sexes. These differences may be explained by differences in lifestyle. %U https://bjo.bmj.com/content/bjophthalmol/68/5/343.full.pdf