title: Sex-linked essential nyctalopia in a Norwegian family.
mesh_terms: D003623:Dark Adaptation; D005260:Female; D005808:Genes, Recessive; D006801:Humans; D008297:Male; D009216:Myopia / Q000175:diagnosis / Q000235:genetics; D009755:Night Blindness / Q000175:diagnosis / Q000235:genetics*; D009664:Norway; D009759:Nystagmus, Pathologic / Q000235:genetics; D009887:Ophthalmoscopy; D010375:Pedigree; D012737:Sex Factors; D014792:Visual Acuity; D058609:Visual Field Tests