Prevalence and Age-Related Changes of Corneal Astigmatism in Patients Undergoing Cataract Surgery in Northern China

Table 2

Spearman’s correlation analysis of corneal astigmatism and age in three types of astigmatism axis.

Corneal astigmatism	Total		Age <65 years		Age ≥65 years
	r	value	r	value	r	value
With-the-rule astigmatism	−0.002	0.920	−0.105	0.001	0.094	0.001
Against-the-rule astigmatism	0.179	<0.001	0.102	0.010	0.166	<0.001
Oblique astigmatism	0.118	<0.001	−0.058	0.307	0.154	<0.001