Central Visual Field Sensitivity With and Without Background Light Given to the Nontested Fellow Eye in Glaucoma Patients

AI Generated Summary*

Monocular central visual field sensitivity was compared with and without illumination to the untested fellow eye, using a head-mounted perimeter, in 102 eyes of 51 open-angle glaucoma patients (mean age 65.1 years) with parafoveal scotomas. Five central points were tested; eyes were designated better or worse using acuity, central thresholds and subjective report. Median sensitivity was 26.0 dB with fellow-eye illumination versus 25.7 dB without (P=0.040). Better eyes showed no difference (27.1 versus 28.0 dB, P=0.643), whereas worse eyes measured higher with illumination (24.8 versus 23.5 dB, P=0.037), an effect confined to low-sensitivity eyes (19.3 versus 17.8 dB, P=0.006). These statistically significant differences are described as small and possibly not clinically meaningful.

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