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The time to detect “significant deterioration” using each of three global indices in two halves of a longitudinal cohort of participants with early or suspected glaucoma, split according to whether the most recent Mean Deviation (MD) in the series for an eye was above or below the median value in the cohort.
VFI = Visual Field Index; PSD = Pattern Standard Deviation. Criteria were chosen to give 95% specificity in a separate test-retest cohort.
