Baseline characteristics of the subjects
| Overall (n=30) | Younger (age<35) (n=17) | Older (age≥35) (n=13) | p Value* | |
| Male, n (%) | 9 (30) | 5 (29) | 4 (31) | |
| Age (years) | 35.6±11.7 | 26.6±4.3 | 47.2±6.5 | <0.001 |
| Spherical equivalent error (D) | −2.7±2.8 | −3.5±2.9 | −2.7±2.8 | 0.070 |
| Axial length (mm) | 24.8±1.5 | 25.3±1.4 | 24.2±1.5 | 0.054 |
| Corneal thickness (mm) | 520.1±25.5 | 519.2±29.2 | 521.2±20.9 | 0.832 |
| Crystalline lens biometry | ||||
| Static condition (±0 D) | ||||
| Anterior lens curvature (mm) | 10.4±1.5 | 11.5±1.3 | 9.5±1.3 | <0.001 |
| Posterior lens curvature (mm) | 5.8±0.4 | 6.1±0.4 | 5.8±0.3 | 0.056 |
| Lens thickness (mm) | 3.9±0.3 | 3.7±0.2 | 4.2±0.3 | <0.001 |
| −1 D accommodation stimuli | ||||
| Anterior lens curvature (mm) | 9.5±1.3 | 11.3±1.3 | 10.3±1.6 | <0.001 |
| Posterior lens curvature (mm) | 5.8±0.4 | 6.0±0.4 | 5.7±0.3 | 0.054 |
| Lens thickness (mm) | 3.9±0.3 | 3.7±0.2 | 4.2±0.3 | <0.001 |
| −3 D accommodation stimuli | ||||
| Anterior lens curvature (mm) | 9.7±1.3 | 10.4±1.3 | 9.0±0.9 | <0.001 |
| Posterior lens curvature (mm) | 5.8±0.4 | 5.9±0.4 | 5.7±0.4 | 0.072 |
| Lens thickness (mm) | 4.0±0.3 | 3.7±0.2 | 4.2±0.3 | <0.001 |
| −5 D accommodation stimuli | ||||
| Anterior lens curvature (mm) | 8.9±0.9 | 8.9±0.9 | 8.9±0.9 | 0.127 |
| Posterior lens curvature (mm) | 5.6±0.3 | 5.6±0.3 | 5.6±0.3 | 0.490 |
| Lens thickness (mm) | 4.0±0.3 | 3.9±0.3 | 4.2±0.3 | <0.001 |
Plus-minus values are means±SD.
*Unpaired t-test between younger age and older age.
D, dioptre.