Table 3.
The comparison of corneal radius of curvatures (CR) between Myopia master, IOLMaster 700 and ARK-1
| Device | Mean±SD (min,max) | Compared test (p value) |
Correlation test | ICC | Difference of the means |
95% LOA | |||
|---|---|---|---|---|---|---|---|---|---|
| r | P | Lower | Upper | ||||||
|
K-flat (mm) |
Myopia master | 7.89±0.26(7.39,8.88) | 0.944 | 0.988 |
all <0.001 |
0.994 (0.992,0.995) |
0 | -0.07 | 0.08 |
| IOLMaster 700 | 7.88±0.26(7.28, 8.88) | ||||||||
| Myopia master | as above | 0.986 | 0.957 |
0.978 (0.972,0.983) |
0 | -0.15 | 0.15 | ||
| ARK-1 | 7.89±0.26(7.38,8.88) | ||||||||
| IOLMaster 700 | as above | 0.912 | 0.953 |
0.976 (0.969,0.981) |
0.07 | -0.15 | 0.16 | ||
| ARK-1 | as above | ||||||||
|
K-steep (mm) |
Myopia master | 7.68±0.25(7.11, 8.54) | 0.059 | 0.951 |
0.974 (0.966,0.980) |
0.04 | -0.11 | 0.19 | |
| IOLMaster 700 | 7.64±0.23(7.09, 8.24) | ||||||||
| Myopia master | as above | 0.136 | 0.901 |
0.947 (0.932,0.959) |
0.04 | -0.17 | 0.27 | ||
| ARK-1 | 7.64±0.24(7.03,8.28) | ||||||||
| IOLMaster 700 | as above | 0.691 | 0.919 |
0.958 (0.945,0.967) |
0 | -0.19 | 0.19 | ||
| ARK-1 | as above | ||||||||
|
K-mean (mm) |
Myopia master | 7.78±0.24(7.25, 8.64) | 0.364 | 0.982 |
0.977 (0.958,0.986) |
0.02 | -0.06 | 0.12 | |
| IOLMaster 700 | 7.76±0.24(7.22, 8.54) | ||||||||
| Myopia master | as above | 0.494 | 0.946 |
0.943 (0.923,0.957) |
0.02 | -0.13 | 0.17 | ||
| ARK-1 | 7.76±0.24(7.20,8.56) | ||||||||
| IOLMaster 700 | as above | 0.819 | 0.959 |
0.959 (0.947,0.968) |
0 | -0.13 | 0.14 | ||
| ARK-1 | as above | ||||||||
SD standard deviation, ICC (A, 1) intraclass correlation coefficiens (inter-rater reliability, two-way random effect model), LOA limit of agreements