Visual Field Testing with Head-Mounted Perimeter 'imo'

AI Generated Summary*

A portable head-mounted perimeter, imo, usable without a darkened room, was piloted on 40 eyes of 20 patients with glaucoma. Alongside monocular testing, it can present stimuli unpredictably to either eye without occlusion. Testing followed a 30-2 grid, with 4-2 dB thresholding on imo and SITA Standard on the Humphrey Field Analyzer (HFA); mean sensitivity did not differ significantly across the three conditions (P = 0.99), and correlations ranged from r = 0.94 to 0.98. Differences between the two imo modes averaged 0.21 dB (right) and -0.11 dB (left). The binocular mode took 17.3 minutes versus 16.0 for the HFA, and no participant identified the tested eye. Repeatability was not examined, and the manufacturer funded it.

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