title: Congenital idiopathic nystagmus in identical twins.
abstract: Using an infrared recording system we examined the nystagmus waveforms of a pair of monozygotic twin girls and found them to be dissimilar. It is proposed that in view of the common mode of inheritance the differences are a result of environmental influences.
mesh_terms: D000293:Adolescent; D004200:Diseases in Twins; D004777:Environment; D005133:Eye Movements; D005260:Female; D006801:Humans; D009759:Nystagmus, Pathologic / Q000151:congenital* / Q000235:genetics / Q000503:physiopathology; D011247:Pregnancy; D014430:Twins, Monozygotic