Table 2: Repeatability results for visual acuity and contrast sensitivity defocus curves.

Defocus (D) -4 -3.5 -3.00 -2.50 -2.00 -1.50 -1.00 -0.50 0.00 0.50 1.00
Visual Acuity Defocus Curve (logMAR)
Median diff. 0 0.1 0 0.1 0 0.1 0 0.1 0 0.1 -0.2
Mean diff. -0.03 0.08 -0.04 0.07 -0.01 0.06 -0.01 0.05 -0.03 0.1 -0.16
SR 0.08 0.1 0.07 0.08 0.08 0.09 0.08 0.08 0.06 0.12 0.18
R 0.23 0.28 0.20 0.23 0.21 0.26 0.21 0.23 0.18 0.34 0.50
% ≤ 0.1 76.5 82.4 85.3 76.5 82.4 73.5 85.3 79.4 94.2 70.6 41.2
% ≤ 0.2 100 88.2 100 100 97.1 97.1 97.1 97.1 100 88.2 58.9
Contrast Sensitivity Defocus Curve (logCS)
Median diff. 0 -0.1 -0.1 -0.1 -0.1 -0.1 -0.1 -0.1 -0.1 -0.25 -0.05
Mean diff. -0.21 -0.23 -0.16 -0.26 -0.19 -0.22 -0.21 -0.23 -0.21 -0.30 -0.14
SR 0.26 0.29 0.23 0.3 0.26 0.29 0.29 0.27 0.24 0.34 0.26
R 0.71 0.81 0.64 0.83 0.71 0.81 0.81 0.76 0.67 0.95 0.72
% ≤ 0.1 58.9 41.1 50 47 53 47 44.2 47 53 38.2 47
% ≤ 0.2 67.6 52.9 67.6 58.8 64.7 64.7 67.6 61.8 64.7 47.1 67.7

Median diff.: Median difference between both trials; Mean diff.: Mean difference between both trials; SR: Reproducibility; R: Reproducibility limit; % ≤ 0.1: Percentage of subjects within 0.1 log units of difference between both trials; % ≤ 0.2: Percentage of subjects within 0.2 log units of difference between both trials.