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Basic characteristics
| Mean±SD | 95% CI | Range | |
|---|---|---|---|
| Age (years) | 33.0±9.0 | 31.1 to 34.8 | 20 to 53 |
| Spherical equivalent (diopters) | −0.3±0.7 | −0.5 to 0.2 | −3.0 to +1.6 |
| Axial length (mm) | 22.7±0.9 | 22.5 to 22.9 | 21.1 to 25.3 |
| Central corneal thickness (μm) | 528.0±35.1 | 520.9 to 535.1 | 442.0 to 649.0 |
| Corneal diameter (mm) | 10.9±0.2 | 10.8 to 11.0 | 10.1 to 11.5 |
| Disc area (mm2) | 2.6±0.5 | 2.5 to 2.7 | 1.4 to 4.0 |
SD, standard deviation; CI, confidence interval.
