Table 4

Mean and standard deviation (SD) contrast sensitivities, intraclass correlation coefficients (ICC), coefficient of repeatability (COR), and the 95% limits for change calculated from test and retest data from 33 normal subjects

Test (mean (SD))Retest (mean (SD))ICCCOR95% limits for change
Vistech 1.5 cpd1.90 (0.21)1.90 (0.17)0.28±0.45±0.75
Vistech 3 cpd2.17 (0.17)2.22 (0.14)0.37±0.33±0.42
Vistech 6 cpd2.21 (0.15)2.20 (0.17)0.64±0.26±0.30
Vistech 12 cpd1.93 (0.23)1.95 (0.25)0.52±0.44±0.55
Vistech 18 cpd1.49 (0.31)1.47 (0.29)0.49±0.54±0.85
FACT 1.5 cpd1.94 (0.12)1.97 (0.07)0.18±0.25±0.30
FACT 3 cpd2.11 (0.11)2.12 (0.12)0.28±0.22±0.30
FACT 6 cpd2.12 (0.11)2.12 (0.10)0.44±0.25±0.30
FACT 12 cpd1.88 (0.22)1.86 (0.19)0.36±0.45±0.45
FACT 18 cpd1.49 (0.26)1.52 (0.26)0.45±0.60±0.75