Table 2.
Correlations and determination coefficients of the ocular biometric parameters.
| Variable | Correlation and determination coefficients (partial correlation coefficients) with crystalline lens thickness | p value |
|---|---|---|
| Age | r = 0.53, R2 = 0.28 | <0.001 |
| Anterior curvature radius for crystalline lens | r = -0.60, R2 = 0.36 (r = -0.57) | <0.001 |
| Posterior curvature radius for crystalline lens | r = -0.12, R2 = 0.01 (r = -0.14) | 1.000 |
| Anterior surface depth for crystalline lens | r = -0.65, R2 = 0.42 (r = -0.61) | <0.001 |
| Equatorial surface depth for crystalline lens | r = -0.18, R2 = 0.03 (r = -0.17) | 1.000 |
| Posterior surface depth for crystalline lens | r = 0.41, R2 = 0.17 (r = 0.32) | 0.002 |
| Central IOL thickness position | r = 0.01, R2 = 0.00 (r = 0.02) | 1.000 |
| C constant | r = 0.55, R2 = 0.30 (r = 0.54) | <0.001 |
| Predicted IOL position using C constant | r = -0.32, R2 = 0.10 (r = -0.32) | 0.033 |
| Correlation and determination coefficients with predicted IOL position using C constant | ||
| Anterior surface depth for crystalline lens | r = 0.93, R2 = 0.86 | <0.001 |
| Equatorial surface depth for crystalline lens | r = 0.80, R2 = 0.64 | <0.001 |
| Posterior surface depth for crystalline lens | r = 0.73, R2 = 0.53 | <0.001 |
| Correlation and determination coefficients with anterior IOL surface position | ||
| Anterior surface depth for crystalline lens | r = 0.67, R2 = 0.45 | <0.001 |
| Equatorial surface depth for crystalline lens | r = 0.72, R2 = 0.52 | <0.001 |
| Posterior surface depth for crystalline lens | r = 0.74, R2 = 0.55 | <0.001 |
| Correlation and determination coefficients with predictive refraction error | ||
| Difference between predicted postoperative ACD of SRK/T formula and anterior IOL surface position | r = 0.65, R2 = 0.42 | <0.001 |
| Difference between predicted postoperative ACD of SRK/T formula and anterior surface depth for crystalline lens | r = 0.46, R2 = 0.21 | <0.001 |
| Difference between predicted postoperative ACD of SRK/T formula and equatorial surface depth for crystalline lens | r = 0.54, R2 = 0.29 | <0.001 |
| Difference between predicted postoperative ACD of SRK/T formula and posterior surface depth for crystalline lens | r = 0.58, R2 = 0.34 | <0.001 |
IOL: intraocular lens; ACD: anterior chamber depth.