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Retinitis pigmentosa and allied disorders in Denmark
Author(s) -
Haim Marianne,
Rosenberg Thomas
Publication year - 1993
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/j.1755-3768.1993.tb04648.x
Subject(s) - retinitis pigmentosa , medicine , dystrophy , epidemiology , danish , ophthalmology , dermatology , pathology , retinal , linguistics , philosophy
. We analyzed the composition of a retinitis pigmentosa (RP) sample with respect to clinical appearance. The material included 1301 affected persons derived from a national Danish survey with a high degree of completeness. The cases were grouped according to ocular signs and symptoms into typical RP, atypical RP, vitreoretinal RP, chorioretinal dystrophy, and unclassified. The relative frequency with which these groups were nosologically allocated to systemic and non‐systemic retinitis pigmentosa is presented. Among 837 cases of non‐systemic RP 60% had ophthalmoscopic abnormalities and visual symptoms in accordance with typical RP, 29% were characterized as atypical and 6% presented with chorioretinal dystrophy. The results of earlier epidemiological studies, sex distribution, and new diagnostic concepts based on DNA analysis are discussed.