Research Article
Prevalence of Corneal Astigmatism in Patients before Cataract Surgery in Western China
Table 2
Comparisons of parameters of the ARC patients by sex and age group.
| Group | CYL (D) mean ± SD | K1 (D) mean ± SD | K2 (D) mean ± SD | AL (mm) mean ± SD | Astigmatism type | WTR (%) | ATR (%) | Oblique (%) |
| Sex | | | | | | | | Male | 1.32 ± 1.06 | 43.10 ± 1.49 | 44.25 ± 1.60 | 23.14 ± 0.94 | 42.38 | 38.12 | 19.50 | Female | 1.25 ± 1.03 | 43.27 ± 1.50 | 44.23 ± 1.63 | 23.14 ± 0.97 | 41.55 | 39.40 | 19.05 | value | <0.001 | <0.001 | 0.45 | 0.66 | | 0.36 | |
| Age | | | | | | | | 40–49 | 1.25 ± 1.03 | 43.05 ± 1.47 | 44.13 ± 1.57 | 23.15 ± 0.99 | 42.30 | 40.19 | 17.51 | 50–59 | 1.27 ± 1.05 | 43.16 ± 1.50 | 44.21 ± 1.60 | 23.12 ± 0.97 | 41.86 | 38.37 | 19.77 | 60–69 | 1.29 ± 1.09 | 43.19 ± 1.49 | 44.24 ± 1.62 | 23.12 ± 0.93 | 41.94 | 38.37 | 19.69 | 70–79 | 1.30 ± 1.07 | 43.22 ± 1.50 | 44.26 ± 1.62 | 23.19 ± 0.97 | 41.54 | 39.24 | 19.22 | ≥80 | 1.23 ± 0.82 | 43.32 ± 1.57 | 44.41 ± 1.78 | 23.16 ± 0.96 | 41.45 | 41.45 | 17.10 | value | 0.44 | 0.007 | 0.04 | 0.003 | | 0.77 | |
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ARC: age-related cataract; CYL: corneal astigmatism; K1: flat keratometry; K2: steep keratometry; AL: axial length; WTR: with the rule; ATR: against the rule; D: diopter.
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