Table 4.
The comparison of refraction spherical, refraction cylinder and refraction equivalent between Myopia master, ARK-1 and manifest refraction
| Device | Mean±SD (min,max) | Compared test (p value) |
Correlation test | ICC | Difference of the means |
95% LOA | |||
|---|---|---|---|---|---|---|---|---|---|
| r | P | Lower | Upper | ||||||
| Spherical Refraction | Myopia master | -0.95±2.13(-8.00,7.75) | 0.01 | 0.954 |
all <0.001 |
0.976 (0.970,0.982) |
0.36 | -0.91 | 1.63 |
| Manifest refraction | -0.57±2.16(-7.75,8.00) | ||||||||
| Myopia master | as above | 0.016 | 0.988 |
0.994 (0.992,0.995) |
0.37 | -0.29 | 1.04 | ||
| ARK-1 | -0.57±2.16(-7.50,8.50) | ||||||||
| Manifest refraction | as above | 0.901 | 0.953 |
0.976 (0.969,0.981) |
-0.01 | -1.30 | 1.28 | ||
| ARK-1 | as above | ||||||||
| Cylindrical Refraction | Myopia master | -0.79±0.71(-4.50,0) | 0.002 | 0.748 |
0.858 (0.817,0.890) |
0.17 | -0.76 | 1.11 | |
| Manifest refraction | -0.6±0.63(-3.50,0) | ||||||||
| Myopia master | as above | 0.375 | 0.852 |
0.933 (0.914,0.948) |
0.05 | -0.63 | 0.73 | ||
| ARK-1 | -0.73±0.68(-4.00,0) | ||||||||
| Manifest refraction | as above | 0.024 | 0.812 |
0.908 (0.881,0.928) |
0.13 | -0.61 | 0.86 | ||
| ARK-1 | as above | ||||||||
| Spherical Equivalent | Myopia master | -1.35±2.12(-8.63,6.75) | 0.001 | 0.960 |
0.939 (0.799,0.972) |
0.47 | -0.77 | 1.71 | |
| Manifest refraction | -0.86±2.11(-8.50,7.13) | ||||||||
| Myopia master | as above | 0.008 | 0.984 |
0.968 (0.768,0.989) |
0.40 | -0.36 | 1.16 | ||
| ARK-1 | -0.93±2.13(-8.38,7.38) | ||||||||
| Manifest refraction | as above | 0.646 | 0.960 |
0.959 (0.947,0.968) |
0.06 | -1.12 | 1.24 | ||
| ARK-1 | as above | ||||||||
Values with statistical significance are shown in bold
SD standard deviation, ICC (A, 1) intraclass correlation coefficients (inter-rater reliability, two-way random effect model), LOA limit of agreements