Oculomotor signs were evaluated in 172 psychiatric patients.
Schizophrenic patients demonstrated a significantly higher incidence of
staring, pursuit breaks, and lateral glances than did controls or other
psychiatric patients. Oculomotor signs may help to differentiate
schizophrenia from affective and nonpsychotic disorders. Patients with
tardive dyskinesia and patients treated with tricyclic antidepressants
demonstrated a significant elevation in mean blink rate. Elevated blink
rates may be on early indicator of tardive dyskinesia.
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