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SMILE shows stable results after 3 years
Small incision lenticule extraction may produce stable refractive and visual outcomes out to 3 years in patients with high myopia, according to a study.
The study determined the long-term outcomes of small incision lenticule extraction (SMILE) in 87 patients with high myopia after a 3-year follow-up, as well as the optical changes from 3 months to 3 years postoperatively.
Uncorrected distance visual acuity was stable after surgery, with no significant change from 3 months to 3 years postoperatively.
Mean corrected distance visual acuity significantly improved from –0.05 ± 0.15 logMAR at 3 months to –0.08 ± 0.11 logMAR at 3 years after SMILE (P < .001).
The average error in refraction was –0.21 ± 0.48 D with 82% and 93% of patients within ±0.5 D and ±1 D, respectively, at 3 months postoperatively, and –0.29 ± 0.55 D with 78% and 90% of patients within ±0.5 D and ±1 D, respectively, at 3 years.
Mean spherical equivalent changed from –7.30 ± 1.45 D preoperatively to –0.31 ± 0.53 D after 3 months and–0.39 ± 0.61 D at 3 years, but there was no significant change between 3 months and 3 years.
Mean refractive astigmatism changed from –0.72 ± 0.59 D preoperatively to –0.5 ± 0.35 D at 3 months and –0.48 ± 0.38 D at 3 years, but there was no significant difference between the two follow-up periods.
There was significant myopic regression in total corneal refractive power with an average of 0.36 ± 0.29 D from 3 months to 3 years (P < .001).
Between 3 months and 3 years postoperatively, spherical and high-order aberrations significantly decreased, but coma remained stable. – by Kristie L. Kahl
Disclosure: The authors report no relevant financial disclosures.
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Pedersen IB, et al. J Refract Surg. 2015;doi:10.3928/1081597X-20150923-11.