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Table 2 The distribution of ACA, PCA, and TCA in different age groups

From: Analysis of corneal astigmatism and aberration in chinese congenital cataract and developmental cataract patients before cataract surgery

Characteristics

≤ 6 years

7‒13 years

14‒19 years

20‒39 years

≥ 40 years

P value

Eyes (n)

114

204

52

140

28

 

ACA₸1 (D)

 Mean ± SD

2.13 ± 0.97

2.04 ± 1.07

2.35 ± 1.21

1.72 ± 0.96

1.49 ± 1.26

.002*

 Range

0.5‒4.8

0.0‒4.4

0.5‒4.7

0.1‒3.8

0.4‒3.8

 

PCA₸2(D)

 Mean ± SD

0.54 ± 0.31

0.51 ± 0.28

0.52 ± 0.21

0.42 ± 0.19

0.38 ± 0.28

.008*

 Range

0.2‒1.9

0.0‒1.9

0.3‒1.0

0.0‒0.9

0.1‒0.9

 

TCA₸3 (D)

 Mean ± SD

2.24 ± 0.95

2.17 ± 1.11

2.22 ± 1.35

1.81 ± 1.34

1.59 ± 1.27

.001*

 Range

0.7‒4.8

0.2‒5.1

0.4‒5.4

0.2‒8.8

0.2‒3.9

 
  1. ₸1ACA Anterior Corneal Astigmatism, ₸2PCA Posterior Corneal Astigmatism, ₸3TCA Total Corneal Astigmatism