TY - JOUR
A1 - Sharma, P
A1 - Aslam, B
A1 - Saxena, S
T1 - Eye tracking disturbances in Schizophrenia
Y1 - 2000/1/1
JF - Indian Journal of Ophthalmology
JO - Indian J Ophthalmol
SP - 15
EP - 9
VL - 48
IS - 1
UR - https://journals.lww.com/ijo/pages/default.aspx/article.asp?issn=0301-4738;year=2000;volume=48;issue=1;spage=15;epage=9;aulast=Sharma
N2 - Purpose: To study the frequency of different types of eye tracking disturbances in schizophrenia.
Materials and Methods: Smooth pursuit eye movements were studied by electro-oculography (EOG) in 22 schizophrenic patients (ICD-10 criteria) and 15 age and sex-matched controls. The studied parameters included average pursuit gain, number of saccades, the frequency of different types of saccades (catch-up, back-up, anticipatory saccades), and disturbances during fixation. The results were analysed statistically.
Results: The average pursuit gain was significantly affected in patients for target velocity of 30°/sec (p=0.007). The catch-up and back-up saccades were more common in cases than controls but the difference was not significant (p=0.39 and 0.36 respectively). The anticipatory saccades were significantly more frequent in cases than controls (p<0.0001) for both 15°/sec and 30°/sec target velocities. This was also correlated with the duration of illness.
Conclusion: Anticipatory saccades are significantly more frequent during eye tracking in schizophrenia and appear to be an objective marker for the disease.
ER -