Table 4.

Corneal aberrations (μm) at a 6 mm optical zone 12 months after surgery

	UT-DSAEK	DMEK	p
HOAs total	0.88 ± 0.20	0.58 ± 0.15	< 0.001**
HOAs front	0.76 ± 0.16	0.63 ± 0.19	0.11
HOAs back	0.43 ± 0.16	0.23 ± 0.07	< 0.001**
Astigmatism total	1.08 ± 0.43	0.63 ± 0.34	0.003**
Astigmatism front	0.95 ± 0.27	0.62 ± 0.24	0.005**
Astigmatism back	0.41 ± 0.17	0.20 ± 0.11	< 0.001**
Coma total	0.55 ± 0.10	0.45 ± 0.26	0.04*
Coma front	0.44 ± 0.16	0.45 ± 0.24	0.87
Coma back	0.20 ± 0.13	0.14 ± 0.10	0.06
Spherical aberration total	0.24 ± 0.14	0.24 ± 0.06	0.87
Spherical aberration front	0.26 ± 0.08	0.25 ± 0.04	0.89
Spherical aberration back	0.09 ± 0.07	0.18 ± 0.28	0.76

P value was assessed by the Wilcoxon signed rank test (non-parametric); UT-DSAEK= ultrathin 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