Prevalence of Corneal Astigmatism in Patients before Cataract Surgery in Western China

Table 1

Demographic and clinical characteristics of the ARC patients.

Characteristic	Value
Eye/patient (n)	12236/7065
Age (y)
Mean ± SD	64.75 ± 9.66
Range	40, 103
Male/female sex (n)	3337/3728
Corneal astigmatism (D)
Mean ± SD	1.28 ± 1.04
Range	0, 6.94
Flat keratometry (D)
Mean ± SD	43.19 ± 1.50
Range	35.90, 48.98
Steep keratometry (D)
Mean ± SD	44.24 ± 1.62
Range	36.29, 51.45
Axial length (mm)
Mean ± SD	23.14 ± 0.96
Range	20.01, 25.99

ARC: age-related cataract; SD: standard deviation; D: diopter.