Comparison of imo and Humphrey field analyzer perimeters in glaucomatous eyes

To compare the imo perimeter, a new portable head-mounted perimeter unit that enables both eyes to be examined quickly and simultaneously, with the Humphrey field analyzer (HFA) perimeter to investigate correlations and their diagnostic ability in glaucomatous eyes. We tested the performance of this equipment in 128 [i1][n2]glaucomatous eyes and 40 normal eyes. We investigated the correlations of mean deviation, pattern standard deviation, and visual field index and the sensitivity. The imo perimeter had a short measurement time, and compared with HFA, the imo perimeter showed no significant difference between each parameter and the diagnostic ability. Measurements of mean deviation (r=0.886, P<0.001), pattern standard deviation (r=0.814, p<0.001), and visual field index (r=0.871, p<0.001) in both perimeters were strongly and positively correlated. the sensitivities in the imo perimeter were 80.5% for mean deviation, 81.2% for pattern standard deviation, and 80.5% in visual field index; those in the hfa were 63.3% for mean deviation, 74.5% for pattern standard deviation, and 80.5% for visual field index. both perimeters demonstrated high diagnostic ability.