Correlations between catecholamine concentrations, AL and refraction
| Baseline AL | P value | 1 year change in AL | P value | Baseline SE | P value | 1 year change in SE | P value | |
| Coefficient* | Coefficient* | Coefficient* | Coefficient* | |||||
| E | 0.0015 | 0.894 | 0.0018 | 0.604 | −0.0047 | 0.563 | −0.0048 | 0.591 |
| NE | 0.0082 | 0.013 | 0.0024 | 0.016 | −0.0046 | 0.045 | −0.0057 | 0.025 |
| DA | 0.0006 | 0.066 | 0.0002 | 0.073 | −0.0006 | 0.017 | −0.0004 | 0.189 |
| Factor 1 | 0.1274 | 0.022 | 0.0373 | 0.023 | −0.0855 | 0.028 | −0.0866 | 0.045 |
*Effects of E, NE, DA and Factor 1 on the baseline AL, 1-year change in AL, baseline SE and 1-year change in SE were analysed using robust regression, adjusted for age, gender and baseline refractive status.
AL, axial length; DA, dopamine; E, epinephrine; NE, norepinephrine; SE, spherical equivalent refraction.