Table 1 The mean values of capillary vessel length density and their coefficient of variation among individuals for each instrument by 4 different locations of a ring between two circles (1.5 and 2.25 mm) centered on the disc.

From: Repeatability and Reproducibility of Quantification of Superficial Peri-papillary Capillaries by four Different Optical Coherence Tomography Angiography Devices

Location Superior Nasal Inferior Temporal
instrument
Spectralis mean ± SD (mm−1) 20.1 ± 3.4 25.2 ± 3.4 19.4 ± 3.1 23.8 ± 4.0
CV (%) 17 14 16 17
Optovue mean ± SD (mm−1) 18.8 ± 1.9 20.9 ± 2.3 18.7 ± 2.1 22.8 ± 2.3
CV (%) 10 11 11 10
Triton mean ± SD (mm−1) 21.9 ± 2.6 22.8 ± 2.9 21.9 ± 2.0 24.3 ± 2.7
CV (%) 12 13 9 11
Cirrus mean ± SD (mm−1) 16.9 ± 1.9 20.7 ± 2.4 16.8 ± 2.2 19.8 ± 4.4
CV (%) 11 12 13 22