Research Article
Prevalence and Age-Related Changes of Corneal Astigmatism in Patients Undergoing Cataract Surgery in Northern China
Table 1
Demographic characteristics and clinical findings of the study population.
| | Characteristic | Value |
| | Eyes/patients (n) | 5662/5662 |
| | Age (years) | | Mean (years) | 68.26 ± 10.39 | | Range of age (years) | 40 to 97 | | Female, no. (%) | 3389 (59.86) |
| | Corneal astigmatism (D) | | Mean corneal astigmatism (D) | 0.98 ± 0.76 | | Range of corneal astigmatism (D) | 0.00 to 9.61 |
| | Axis of astigmatism, no. (%) | | With-the-rule | 2075 (36.65) | | Against-the-rule | 2514 (44.40) | | Oblique | 1073 (18.95) |
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Data are presented as numbers and percentages, means and standard deviations (SD). D = diopter.
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