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Table 6 Analysis of the postoperative SE prediction error according to the preoperative astigmatism orientation groups. (average axial length eyes, i.e., eyes with axial lengths greater than 22.0 mm and less than 25.0 mm)

From: Investigating the impact of preoperative corneal astigmatism orientation on the postoperative spherical equivalent refraction following intraocular lens implantation

Descriptive statistics

 

Mean (M)

Sample size (N)

Std. deviation (SD)

Std. error mean (SEM)

Group 1 (ATR)

−0.132

88

0.475

0.051

Group 2 (WTR)

0.026

138

0.497

0.042

Group 3 (OB)

−0.130

62

0.479

0.0609