Comparison between loss variance of tendency-oriented perimetry and normal strategy perimetery using octopus 32 program

ABSTRACT

To compare the values of loss variance [LV] obtained by a faster strategy- Tendency oriented perimetry [TOP] with those obtained by a standard stair casing strategy i.e. normal test strategy using OCTOPUS 32 program. Cross-sectional comparative study. Eye Department of Military Hospital Rawalpindi from February 15, 2007 to October 10, 2007. A total of 61 eyes were included in the study. Thirty with normal ocular examination and 31 with ocular pathologies producing visual field defects. Each eye was analysed with the normal [stair casing] test strategy and TOP strategy using 32 programs on Octopus 311 perimeter. LV was compared for two strategies. There was statistically significant difference between LV obtained from TOP and Normal strategy [p = 0.001]. TOP strategy tends to obtain fields with less pathological results especially for the calculation of the extent and depth of each scotoma in comparison with the normal strategy