The comparison of corneal higher-order aberration and surgically induced astigmatism between the clear corneal incision and the limbus tunnel incision of posterior chamber implantable collamer lens implantation

Table 3 The HOA on the back corneal surface of the two surgical incisions groups (mean ± SD)

Group	Time	n	TMAS	HOA	Z₃⁻¹	Z₃¹	Z₄⁰
CCI	Preoperative	70	3.31 ± 0.27	0.30 ± 0.15	0.03 ± 0.06	0.02 ± 0.04	-0.27 ± 2.36
	1Week		1.34 ± 0.45	0.42 ± 0.36	0.01 ± 0.09	0.06 ± 0.06	-0.02 ± 0.25
	1Month		0.25 ± 0.03	0.09 ± 0.01	0.11 ± 0.02	0.04 ± 0.01	0.22 ± 0.03
	3Month		1.21 ± 0.32	0.35 ± 0.13	0.04 ± 0.05	0.04 ± 0.03	0.02 ± 0.23
	6Month		1.28 ± 0.29	0.33 ± 0.13	0.04 ± 0.06	0.03 ± 0.02	0.06 ± 0.43
LTI	Preoperative	57	4.32 ± 0.35	0.29 ± 0.17	0.04 ± 0.05	0.01 ± 0.06	-0.23 ± 0.63
	1Week		1.24 ± 0.42	0.38 ± 0.23	0.02 ± 0.07	0.05 ± 0.06^*	-0.04 ± 0.21^*
	1Month		0.23 ± 0.04	0.11 ± 0.02	0.09 ± 0.02	0.08 ± 0.01	0.40 ± 0.07
	3Month		1.19 ± 0.18	0.30 ± 0.06	0.05 ± 0.09	0.02 ± 0.03	-0.04 ± 0.21
	6Month		1.20 ± 0.19	0.28 ± 0.03	0.04 ± 0.04	0.02 ± 0.03	0.03 ± 0.22

CCI is the clear corneal incision group, LTI is the limbus tunnel incision group, TMAS the total Zernike root mean square, HOA the Zernike root mean square higher order, Z₃⁻¹ the horizontal coma, Z₃¹ the Vertical coma, Z₄⁰ the 4th order spherical aberration
^*P-value < 0.05

ISSN: 1471-2415