O. Gambini et al., SMOOTH-PURSUIT EYE-MOVEMENTS AND SACCADIC EYE-MOVEMENTS IN PATIENTS WITH DELUSIONAL DISORDER, The American journal of psychiatry, 150(9), 1993, pp. 1411-1414
Objective: This study used eye movement tests to examine whether front
al lobe dysfunction is present in delusional disorder. Method. Smooth
pursuit and voluntary saccadic eye movements of 15 delusional patients
, 40 schizophrenic patients, and 40 normal subjects were recorded and
analyzed statistically. Results: The schizophrenic patients differed s
ignificantly from the normal subjects in some smooth pursuit eye movem
ent characteristics, whereas both the schizophrenic and the delusional
patients showed more saccades than the normal subjects during the smo
oth pursuit test. The delusional patients and normal subjects differed
significantly in some voluntary saccadic eye movement characteristics
. Conclusions: The data support the idea of a biological dysfunction i
n eye tracking in delusional disorder.