Abstract
Neurological, neuro-ophthalmologic and neurootologic studies were performed on sixty-eight institutionalized children with cerebral palsy. Convergent squint was noted in 6 patients, 4 of them were born with low birth weight.
Disturbance of upward gaze was seen in 20% of the athetotic type patients, but only one had both upward and downward gaze palsy. Spontaneous and gaze nystagmus was found more often in the spastic type patients.
The incidence of non-gaze nystagmus under Frenzel's spectacles was 28% and was not different between the spastic and athetotic types. Electronystagmograph (ENG) recording showed spontaneous nystagmus in 83% of the patients, which was more common in the spastic type, while gaze nystagmus was predominant in the athetotic type.
The optokinetic nystagmus and the eye tracking test (ETT) were abnormal in the majority of the patient with athetotic movements.
The observation by the naked-eye detected almost the same number of the patients with the optokinetic nystagmus as compared to that by the ENG, but ENG revealed much more ETT changes.
