Table 5. Comparison of cycloplegic spherical refraction with noncycloplegic and predicted spherical refraction in the comparison group (126 eyes of 64 subjects).
| Mean | SD | Minimum | Median | Maximum | |
|---|---|---|---|---|---|
| Noncycloplegic refractive value | 0.25 | 2.32 | –6.00 | 0.00 | 8.75 |
| Cycloplegic refractive value | 1.20 | 2.82 | –5.75 | 1.25 | 9.75 |
| Predicted refractive value | 1.08 | 2.65 | –5.87 | 1.05 | 9.15 |
| Noncycloplegic vs. cycloplegic | |||||
| Refractive residual error | –0.95 | 1.08 | –5.50 | –0.50 | 0.25 |
| Predicted vs. cycloplegic | |||||
| Refractive residual error | –0.12 | 0.72 | –1.95 | –0.15 | 1.51 |
The root mean squared residuals for comparison of noncycloplegic or predicted refraction with cycloplegic refraction were 1.438 and 0.727, respectively.