Evaluation of Corneal Higher-Order Aberrations by Scheimpflug–Placido Topography in Patients with Different Refractive Errors: A Retrospective Observational Study

Table 2

Corneal HOAs of all groups.

Group	RMS SA	RMS coma	RMS trefoil	Total RMS
RMS of anterior corneal aberrations (mean ± SD)
Low and moderate myopia	0.17 ± 0.05	0.16 ± 0.09	0.15 ± 0.08	0.34 ± 0.32
High myopia	0.16 ± 0.06	0.19 ± 0.11	0.16 ± 0.11	0.34 ± 0.13
Myopic astigmatism	0.14 ± 0.06	0.23 ± 0.22	0.24 ± 0.25	0.44 ± 0.34
Hypermetropic astigmatism	0.09 ± 0.05	0.23 ± 0.16	0.23 ± 0.14	0.41 ± 0.22
Hypermetropia	0.04 ± 0.02	0.26 ± 0.12	0.21 ± 0.12	0.99 ± 0.70
RMS of posterior corneal aberrations (mean ± SD)
Low and moderate myopia	0.01 ± 0.02	0.06 ± 0.02	0.03 ± 0.01	0.06 ± 0.03
High myopia	0.04 ± 0.03	0.04 ± 0.03	0.06 ± 0.03	0.06 ± 0.05
Myopic astigmatism	0.01 ± 0.01	0.07 ± 0.02	0.06 ± 0.022	0.09 ± 0.04
Hypermetropic astigmatism	0.05 ± 0.07	0.07 ± 0.04	0.03 ± 0.05	0.08 ± 0.06
Hypermetropia	0.03 ± 0.02	0.02 ± 0.05	0.05 ± 0.01	0.05 ± 0.07