title: X-linked congenital nystagmus: a problem in genetic counseling.
abstract: A pedigree with X-linked congenital nystagmus is presented. A mother wished information about prenatal sex determination. The large number of clinically affected female heterozygotes in the pedigree illustrates a potential problem in genetic counseling for this condition and possibly other X-linked disorders which affect the eye.
mesh_terms: D002675:Child, Preschool; D005260:Female; D005808:Genes, Recessive; D005817:Genetic Counseling; D006801:Humans; D007223:Infant; D008297:Male; D009759:Nystagmus, Pathologic / Q000151:congenital / Q000235:genetics*; D012730:Sex Chromosomes