Clinical Outcomes of Aberration-Free All Surface Laser Ablation (ASLA) vs. Aberration-Free ASLA Assisted by Smart Pulse Technology in High Myopia: A One-Year Follow-Up Study

Table 3

Changes of safety and efficacy index after 12 months in SPT group and non-SPT group^a.

Time	Safety index			Efficacy index
	SPT group	Non-SPT group		SPT group	Non-SPT group
7 days	0.81 ± 0.17	0.71 ± 0.17	＜0.001^b	0.79 ± 0.22	0.65 ± 0.17	0.001^b
1 month	0.99 ± 0.08	0.91 ± 0.14	＜0.001^b	0.98 ± 0.13	0.84 ± 0.24	＜0.001^b
3 months	1.07 ± 0.11	1.02 ± 0.13	0.033^b	1.09 ± 0.18	0.99 ± 0.19	0.005^b
6 months	1.08 ± 0.11	1.07 ± 0.12	0.477	1.08 ± 0.15	0.99 ± 0.18	0.009^b
12 months	1.10 ± 0.12	1.04 ± 0.11	0.004^b	1.09 ± 0.14	0.98 ± 0.17	＜0.001^b

SPT = smart pulse technology. Safety index = postoperative mean CDVA/preoperative mean CDVA. Efficacy index = postoperative mean UDVA/preoperative mean CDVA. ^aValues are presented as mean ± standard deviation. ^bSignificant difference between the SPT and non-SPT groups (Student’s t-test/Mann–Whitney U-test).