MOTION PERCEPTION THRESHOLDS IN AREAS OF GLAUCOMATOUS VISUAL-FIELD LOSS

This study examined whether one can differentiate between areas of kno wn visual field loss and areas of known relative field sparing in eyes with primary open angle glaucoma using motion coherence thresholds. T wo visual field locations from patients with primary open angle glauco ma (n = 14), which differed significantly in sensitivity, were selecte d for presentation of a motion stimulus. In the area of visual field l oss mean threshold was 17.4 +/- 4.1 dB (1.74 +/- 0.41 log units relati ve to the brightest stimulus). In the area of relative field sparing m ean threshold was 27.0 +/- 3.6 dB (2.70 +/- 0.36 log units). Motion co herence thresholds were significantly poorer for the area of visual fi eld loss compared to the area of relative field sparing (P < 0.0032, t wo-tailed paired t-test). This result suggests that a perimetric type motion test should be evaluated for early detection of glaucoma. Copyr ight (C) 1996 Elsevier Science Ltd