Four-year observation of predictability and stability of small incision lenticule extraction
Open Access
- 30 August 2016
- journal article
- research article
- Published by Springer Science and Business Media LLC in BMC Ophthalmology
- Vol. 16 (1), 1-8
- https://doi.org/10.1186/s12886-016-0331-0
Abstract
To investigate long-term refractive outcomes, wavefront aberrations and quality of life after small incision lenticule extraction (SMILE) for moderate to high myopia. A total of 26 patients (47 eyes) with preoperative mean spherical equivalent (SE) of -6.30 ± 1.47 diopters (D) who underwent SMILE were recruited. The measurements included uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), manifest refraction, wavefront aberrations, and quality of life. At 4 years postoperatively, UDVA was better than or equal to 20/20 in 92 % of eyes. The efficacy index was 1.07 ± 0.16. 89 % of eyes were within ± 0.5 D of the intended refractive target. No eye lost any Snellen lines. The safety index was 1.16 ± 0.14. No significant changes of SE occurred among postoperative follow-ups at months 1, 3, 6 and years 1, 2, 4 (P > 0.05, Scheffe test). Higher-order aberrations, coma, spherical aberration and higher-order astigmatism increased postoperatively, and no significant changes of aberrations were detected among the 1-month, 6-month or 4-year follow-ups postoperatively (37 eyes). Compared to the spectacles group, the surgery group showed a significantly higher total score on quality of life (45.71 ± 2.61 vs 39.96 ± 3.56, P < 0.001). SMILE provides a predictable and stable correction of moderate to high myopia as documented by long-term follow-up.Keywords
Funding Information
- National Natural Science Foundation of China (Grant No. 81570879)
- the Outstanding Academic Leaders Program of Shanghai Health System (Grant No. XBR2013098)
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