Agreement and Precision of Wide and Cube Scan Measurements between Swept-source and Spectral-domain OCT in Normal and Glaucoma Eyes

AI Generated Summary*

Fifty eyes (25 normal, 25 with glaucoma, mean deviation -5.30 dB) were imaged by three operators, each paired with one swept-source and one spectral-domain OCT. Three scans per configuration covered Wide (12 by 9 mm), macular cube and optic disc cube protocols, with circumpapillary RNFL, GCL+ and GCL++ thickness assessed for precision and between-device agreement. Precision was high and comparable for Wide and cube scans, most limits under 5 µm for macular and 10 µm for optic disc parameters. Wide scan differences between devices stayed at or below 3 µm (cpRNFL), 2 µm (GCL+) and 1 µm (GCL++), smaller than device axial resolution, though confidence intervals hinted at a small systematic GCL+ offset in glaucoma eyes; all participants were Caucasian.

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