Table 2 Descriptive statistics for the 7 age groups
From: Evaluation of biometry and corneal astigmatism in cataract surgery patients from Central China
Age Group (Y) | AL (mm) | ACD (mm) | WTW (mm) | Astigmatism (D) | K1 (D) mean ± SD | K2 (D) mean ± SD | K (D) mean ± SD | Eyes (%) |
|---|---|---|---|---|---|---|---|---|
30–40 | 26.50 ± 2.58 | 3.57 ± 0.22 | 11.79 ± 0.41 | 1.21 ± 0.45 | 42.86 ± 1.52 | 44.07 ± 1.74 | 43.47 ± 1.62 | 13(0.41%) |
41–50 | 25.10 ± 2.70 | 3.42 ± 0.36 | 11.77 ± 0.36 | 1.08 ± 0.71 | 42.87 ± 1.33 | 43.95 ± 1.43 | 43.41 ± 1.33 | 61(1.90%) |
51–60 | 25.41 ± 3.42 | 3.36 ± 0.44 | 11.70 ± 0.45 | 1.01 ± 0.69 | 43.74 ± 1.74 | 44.75 ± 1.76 | 44.24 ± 1.71 | 422(13.15%) |
61–70 | 24.68 ± 2.66 | 3.22 ± 0.47 | 11.68 ± 0.39 | 1.01 ± 0.72 | 43.81 ± 1.56 | 44.82 ± 1.64 | 44.32 ± 1.55 | 1060(33.04%) |
71–80 | 23.95 ± 1.89 | 3.06 ± 0.44 | 11.57 ± 0.44 | 1.13 ± 0.82 | 43.78 ± 1.56 | 44.91 ± 1.62 | 44.35 ± 1.53 | 1112(34.66%) |
81–90 | 23.74 ± 1.69 | 2.95 ± 0.52 | 11.58 ± 0.43 | 1.22 ± 0.76 | 43.68 ± 1.60 | 44.89 ± 1.65 | 44.29 ± 1.58 | 514(15.99%) |
>90 | 23.50 ± 1.33 | 2.70 ± 0.27 | 11.67 ± 0.49 | 1.75 ± 1.00 | 43.67 ± 2.07 | 45.42 ± 1.93 | 44.54 ± 1.93 | 27(0.85%) |
P-value | < .001 | < .001 | < .001 | < .001 | < .001 | < .001 | < .001 |