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[Corneal complications of climatic keratopathy].

The "keratopathie de Bietti" or climatic droplet keratopathy or keratopathie climatique (KC) is a degenerative disease of the cornea which is probably due to the exposure to ultraviolet rays. Usually the evolution is a progressive invasion of cornea by amber nodules which lift up the corneal epithelium. We observed that numerous patients suffered from severe corneal ulcerations which appeared to be spontaneous and which evolution was frequently disastrous. The aim of this work was to pick up epidemiologic data on KC in order to check the following hypothesis: the corneal opaquenesses, due to non traumatic perforations, would be more frequent among patients suffering from KC than among the rest of population. The study, carried out in Republic of Djibouti, dealed with two groups of people: an hospitable group of 217 patients suffering from a KC and a random sample of 2,446 persons among Djibouti people, from which a study ill-healthy was carried out among people from 40 years old. The mistakes were controled by adjustment on age and climatic conditions. The result is that corneal blindnesses which seemed to be spontaneous were more frequent in a significative way among people suffering from KC than among healthy people as old as ill people and living in the same conditions (12% against 0.7%; p = 0.003; Odds ratio adjusted on age: 31.8 IC: 8.8-115.20). On the etiopathogenic point of view the bacterial, fungal and deficiency causes could scarcely be accepted. The unfavourable evolution, resisting to all the treatments, drove to several hypothesis among them is responsibility of free amoebas as acanthamoeba.