Perrotatory nystagmus in the ballet dancer, pigeon, and blind persons; its application as a test for differentiating organic from psychic blindness.
D000818:Animals; D001766:Blindness / Q000175:diagnosis*; D010856:Columbidae; D006801:Humans; D009759:Nystagmus, Pathologic; D019987:Persons with Visual Disabilities
BLINDNESS/diagnosis; NYSTAGMUS