Comparison of Two Wavefront Autorefractors: Binocular Open-Field versus Monocular Closed-Field
Table 3
Intersession repeatability of mean spherical equivalent (MSE) obtained with both binocular open-field (eye refract) and monocular closed-field (VX110) autorefractors in terms of mean difference between sessions (bias), its standard deviation (SD), repeatability (Sr), and its 95% limit (r).
Wavefront autorefractor
Group
MSE
Session 1-session 2
Session 1–session 3
Session 2-session 3
Repeatability [95% limit] (D)
Eye refract
Total
Bias ± SD (D)
−0.02 ± 0.33
0.00 ± 0.28
0.02 ± 0.29
0.21 [0.59]
value
1.000
1.000
1.000
Teenagers
Bias ± SD (D)
−0.08 ± 0.16
−0.10 ± 0.24
−0.02 ± 0.19
0.14 [0.40]
value
0.102
0.188
1.000
Adults
Bias ± SD (D)
−0.02 ± 0.21
−0.02 ± 0.23
0.00 ± 0.20
0.15 [0.41]
value
1.000
1.000
1.000
Presbyopes
Bias ± SD (D)
0.01 ± 0.45
0.06 ± 0.32
0.04 ± 0.37
0.27 [0.75]
value
1.000
0.692
1.000
VX110
Total
Bias ± SD (D)
−0.07 ± 0.40
−0.05 ± 0.87
0.02 ± 0.88
0.53 [1.47]
value
0.325
1.000
1.000
Teenagers
Bias ± SD (D)
−0.18 ± 0.77
0.18 ± 1.52
0.36 ± 1.49
0.92 [2.55]
value
0.906
1.000
0.843
Adults
Bias ± SD (D)
−0.06 ± 0.28
−0.09 ± 0.22
−0.04 ± 0.23
0.18 [0.50]
value
0.760
0.071
1.000
Presbyopes
Bias ± SD (D)
−0.02 ± 0.17
−0.12 ± 0.77
−0.10 ± 0.76
0.44 [1.23]
value
1.000
0.933
1.000
The statistical comparison was done between sessions. , one-way ANOVA for paired samples with Bonferroni correction.
