Prcis: The screening program using imo strongly correlates with 10-2 standard automated perimetry in detecting central visual field defects in early glaucoma, highlighting its potential as a valuable tool for efficient screening and severity quantification.
Purpose: To investigate the correlation between abnormalities within the central 10 degrees of the screening program using imo, a portable head-mounted perimeter, and 10-2 standard automated perimetry in early-stage glaucoma with central visual field defects.
Methods: This retrospective study included early glaucoma with (26 eyes) and without (38 eyes) central visual field defects. The correlation between the numbers of abnormal points within the central 10 degrees of the imo screening program and those in the probability plot of 10-2, and mean total deviation and pattern deviation, were analyzed.
Results: The imo screening program demonstrated sensitivity (80%) and specificity (98.7%) in detecting abnormalities, with a 91.6% agreement rate of 10-2. The mean number of anomalies in the 10-2 plot (pattern deviation) with P <1% was 0.85, 7.75, and 9.69 (95% CI: 0.18-1.51, 5.38-10.1, and 6.89-12.5, respectively) for no, 1, and 2 anomalies in the imo screening program, respectively. The number of anomalies with P <1% was significantly higher when the imo screening program detected 1 anomaly versus none ( P <0.01) and 2 versus 1 ( P <0.05). Mean total deviation values were -1.15, -7.5, and -15.2 (95% CI: -2.32 to 0.03, -11.21 to -3.78, and -19.7 to -10.6, respectively), while mean pattern deviation values were -1.57, -9.0, and -16.0 (95% CI: -2.57 to -0.57, -12.5 to -5.49, and -21.4 to -10.7, respectively), for no, 1, and 2 anomalies in the imo screening program, respectively.
Conclusions: The imo portable head-mounted perimeter was found to correlate with 10-2 standard automated perimetry in glaucoma patients with central visual field defects and has the potential to shorten visual field testing times.
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