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SEX‐LINKED ESSENTIAL NYCTALOPIA IN A NORWEGIAN FAMILY
Author(s) -
SYVERSEN KJELL
Publication year - 1974
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.1755-3768.1974.tb00361.x
Subject(s) - penetrance , norwegian , blindness , medicine , visual acuity , ophthalmology , optometry , biology , genetics , gene , linguistics , philosophy , phenotype
Sex‐linked essential nyctalopia has been demonstrated in eight male members of a Norwegian family with a known occurrence of night‐blindness. The study includes six generations consisting of 65 persons of both sexes. All the persons with nyctalopia also had excessive myopia and reduced visual acuity. One female member had an incomplete picture of the syndrome, but no nyctalopia. It is suggested that she represents an incomplete genetic penetrance and a possible gene‐carrier.