Table 3.

Corneal aberrations (μm) at a 4 mm optical zone 12 months after surgery

	UT-DSAEK	DMEK	p
HOAs total	0.38 ± 0.09	0.29 ± 0.10	0.01*
HOAs front	0.27 ± 0.08	0.25 ± 0.09	0.89
HOAs back	0.24 ± 0.13	0.13 ± 0.04	0.001**
Astigmatism total	0.45 ± 0.26	0.41 ± 0.17	0.97
Astigmatism front	0.40 ± 0.15	0.35 ± 0.14	0.23
Astigmatism back	0.22 ± 0.07	0.16 ± 0.06	0.01*
Coma total	0.28 ± 0.06	0.20 ± 0.07	< 0.001**
Coma front	0.20 ± 0.06	0.16 ± 0.06	0.20
Coma back	0.12 ± 0.08	0.05 ± 0.02	0.003**
Spherical aberration total	0.07 ± 0.04	0.05 ± 0.03	0.16
Spherical aberration front	0.07 ± 0.04	0.06 ± 0.02	0.40
Spherical aberration back	0.04 ± 0.03	0.02 ± 0.01	0.18

P value was assessed by the Wilcoxon signed rank test (non-parametric); UT-DSAEK= ultra-thin Descemet stripping automated endothelial keratoplasty; DMEK= Descemet membrane endothelial keratoplasty; HOAs= high-order aberrations; *p < 0.05; **p < 0.01. Data are presented as mean ± standard deviation (SD). All values are in micrometers