Visual and Refractive Outcomes of Small-Incision Lenticule Extraction in High Myopia: 5-Year Results

Table 2

Visual acuities, efficacy index, and safety index during postoperative follow-up.

	1 year (mean ± SD)	3 years (mean ± SD)	5 years (mean ± SD)
UDVA	0.17 ± 0.15	0.18 ± 0.16	0.20 ± 0.18	0.307
CDVA	0.07 ± 0.10	0.07 ± 0.08	0.06 ± 0.08	0.179
Efficacy index	0.93 ± 0.25	0.93 ± 0.27	0.89 ± 0.26	0.229
Safety index	1.14 ± 0.27	1.14 ± 0.24	1.16 ± 0.20	0.487

UDVA: uncorrected distance visual acuity; CDVA: corrected distance visual acuity; SD: standard deviation. Repeated measures analysis of variance.