1. Referenced scans improve the repeatability of optical coherence tomography angiography measurements in normal and glaucoma eyes

    Referenced scans improve the repeatability of optical coherence tomography angiography measurements in normal and glaucoma eyes

    Aim To compare the repeatability of peripapillary perfusion density and flux index measurements on referenced and non-referenced optical microangiography (OMAG) scans in normal, glaucoma suspect and glaucoma eyes. Methods In a cross-sectional study, 48 eyes (33 subjects) underwent three repeat, non-referenced peripapillary OMAG scans in the same session and 43 eyes (25 subjects) underwent three referenced peripapillary OMAG scans. In the referenced scan group, repeat scans (second and the third scan) were acquired exactly on the baseline (first) scan using the ‘track to prior scan’ option on the device. Repeatability estimates of the mean and four-sector (temporal, superior, nasal and ...

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