Comparison of saccadic reaction time between normal and glaucoma using an eye movement perimeter
Deepmala Mazumdar, J J M Pel, Manish Panday
1Sri Jadhavbhai Nathmal Singhvi Department of Glaucoma, Medical and Vision Research Foundation, Chennai, Tamil Nadu, India.
Aim:
To compare the saccadic reaction time (SRT) in both the central and peripheral visual field in normal and glaucomatous eyes using eye movement perimetery (EMP).
Materials And Methods:
Fifty-four normal and 25 glaucoma subjects underwent EMP and visual field testing on the Humphrey Field Analyser (HFA) 24-2 program. The EMP is based on infrared tracking of the corneal reflex. Fifty-four test locations corresponding to the locations on the 24-2 HFA program were tested. SRTs at different eccentricities and for different severities of glaucoma were compared between normal and glaucoma subjects.
Results:
Mean SRT was calculated for both normal and glaucoma subjects. Mann-Whitney U test showed statistically significant (P < 0.001) differences in SRT's between normal and glaucoma subjects in all zones.
Conclusion:
SRT was prolonged in eyes with glaucoma across different eccentricities.
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