Table 1 Corneal characteristics of the right eyes in 1,255 patients with cataract
From: Analysis of preoperative ocular optical parameters in patients with cataract
Variable stratified | Eyes (%) | Simulated keratometry (SimK) | Total corneal refractive power (TCRP) | Axial distribution of astigmatism, eyes (%) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
k1 | k2 | Km | k1 | k2 | km | With-the-rule | Against-the-rule | Oblique | ||
Age | ||||||||||
  20–40 | 427 (34.02) | 42.56 ± 1.47 | 44.77 ± 1.74 | 43.63 ± 1.49 | 42.40 ± 1.46 | 44.46 ± 1.65 | 43.43 ± 1.45 | 361 (84.54) | 33 (7.73) | 33 (7.73) |
  41–60 | 315 (25.10) | 42.95 ± 1.58 | 43.95 ± 1.75 | 43.44 ± 1.61 | 43.01 ± 1.63 | 44.01 ± 1.74 | 43.51 ± 1.63 | 187 (59.37) | 83 (26.35) | 45 (14.29) |
  61–80 | 373 (29.72) | 43.63 ± 1.50 | 44.52 ± 1.61 | 44.07 ± 1.52 | 43.82 ± 1.58 | 44.80 ± 1.66 | 44.31 ± 1.57 | 155 (41.55) | 148 (39.68) | 70 (18.77) |
  Over 80 | 140 (11.16) | 43.59 ± 1.39 | 44.61 ± 1.49 | 44.09 ± 1.38 | 43.82 ± 1.37 | 45.02 ± 1.49 | 44.42 ± 1.37 | 41 (29.29) | 69 (49.29) | 30 (21.43) |
Sex | ||||||||||
  Male | 578 (46.06) | 42.88 ± 1.59 | 44.31 ± 1.77 | 43.58 ± 1.58 | 42.88 ± 1.65 | 44.30 ± 1.72 | 43.59 ± 1.59 | 346 (59.86) | 149 (25.78) | 83 (14.36) |
  Female | 677 (53.94) | 43.27 ± 1.52 | 44.61 ± 1.63 | 43.93 ± 1.48 | 43.35 ± 1.62 | 44.69 ± 44.69 | 44.02 ± 1.55 | 398 (58.79) | 184 (27.18) | 95 (14.03) |
  Test statistic1 |  | 39.87 | 14.95 | 13.21 | 67.88 | 17.87 | 33.69 | 218.7531 |  |  |
  Test statistic2 |  | 19.69 | 10.03 | 16.51 | 26.21 | 17.36 | 23.95 | 0.3145 |  |  |