Table 1.
Baseline characteristics of study participants
| Parameters | Values |
|---|---|
| Age (y), Mean ± SD (Range) | 30.12 ± 7.48 (18 to 50) |
| Number of eyes in each age group, n (%) | |
| 18 – 20 y | 20 (7.87) |
| 21 – 25 y | 57 (22.44) |
| 26 – 30 y | 67 (26.38) |
| 31 – 35 y | 61 (24.02) |
| 36 – 50 y | 49 (19.29) |
| Sex (Male / Female), n (%) | 50 (37.88) / 82 (62.12) |
| Laterality (Monocular / Binocular), n (%) | 10 (7.57) / 122 (92.43) |
| Pre-op Sphere (D), Mean ± SD (Range) | - 2.50 ± 1.77 (- 7.50 to + 5.50) |
| Pre-op Cylinder (D), Mean ± SD (Range) | - 1.11 ± 1.08 (- 5.25 to - 1.00) |
| Pre-op SEQ (D), Mean ± SD (Range) | - 2.78 ± 1.87 (- 8.00 to + 5.25) |
| Pre-op Mean K (D), Mean ± SD (Range) | 43.89 ± 1.62 (39.3 to 48.9) |
| Pre-op CCT (μm), Mean ± SD (Range) | 525.47 ± 39.43 (448 to 642) |
Abbreviations: y, year; SD, standard deviation; n, number; %, percentage; Pre-op, preoperative; D, diopter; Sphere, a spherical component of refractive error in manifest refraction; Cylinder, a cylindrical component of refractive error in manifest refraction; SEQ, a spherical equivalent of refractive error in manifest refraction (sum of sphere + half the cylinder); K, keratometry reading; CCT, central corneal thickness; μm, micrometer.