Table 2 Repeatability of astigmatism measurements in eyes with keratometric astigmatism > 1.0 D.

From: Repeatability of automated measurements by a new anterior segment optical coherence tomographer and biometer and agreement with standard devices

Parameter

Sw

Repeatability

COV (%)

ICC

Keratometric astigmatism magnitude (D)

0.11

0.31

6.27

0.995

Keratometric astigmatism axis (D)

2.11

5.85

2.26

0.999

TCP astigmatism magnitude (D)

0.10

0.28

5.32

0.996

TCP astigmatism axis (°)

2.55

7.07

2.77

0.999

  1. Sw within-subject standard deviation, COV Coefficient of variation, ICC Intraclass correlation coefficient, TCP total corneal power.
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