EYE-MOVEMENT ABNORMALITIES IN A CASE OF TOURETTE SYNDROME

Tourette syndrome (TS) is a neuropsychiatric disorder that is characte rised by the presence of multiple vocal, facial, and motor ties which change with time, and a number of other behavioural phenomena. Previou s studies have not revealed any ocular-motor abnormalities, We report the eye movement studies of a patient with TS, using electrooculograph y and simultaneous video recording, Intrusive saccades occurred during smooth pursuit and optokinetic nystagmus, Reflexive and voluntary sac cades were dysmetric and there was a complete failure of antisaccades, These abnormalities are characteristic of disease of the frontal lobe s and basal ganglia. We review the literature with respect to the eye movement abnormalities associated with TS.