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Br J Ophthalmol 88:11-16 doi:10.1136/bjo.88.1.11
  • Clinical science
    • Scientific reports

The usefulness of Vistech and FACT contrast sensitivity charts for cataract and refractive surgery outcomes research

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)) ICC COR 95% limits for change
Vistech 1.5 cpd 1.90 (0.21) 1.90 (0.17) 0.28 ±0.45 ±0.75
Vistech 3 cpd 2.17 (0.17) 2.22 (0.14) 0.37 ±0.33 ±0.42
Vistech 6 cpd 2.21 (0.15) 2.20 (0.17) 0.64 ±0.26 ±0.30
Vistech 12 cpd 1.93 (0.23) 1.95 (0.25) 0.52 ±0.44 ±0.55
Vistech 18 cpd 1.49 (0.31) 1.47 (0.29) 0.49 ±0.54 ±0.85
FACT 1.5 cpd 1.94 (0.12) 1.97 (0.07) 0.18 ±0.25 ±0.30
FACT 3 cpd 2.11 (0.11) 2.12 (0.12) 0.28 ±0.22 ±0.30
FACT 6 cpd 2.12 (0.11) 2.12 (0.10) 0.44 ±0.25 ±0.30
FACT 12 cpd 1.88 (0.22) 1.86 (0.19) 0.36 ±0.45 ±0.45
FACT 18 cpd 1.49 (0.26) 1.52 (0.26) 0.45 ±0.60 ±0.75

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