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Review
. 2019 Sep-Oct;8(5):397-405.
doi: 10.1097/01.APO.0000580136.80338.d0.

Dry Eyes After SMILE

Angela H Y Wong  1 , Rachel K Y Cheung  2 , Wee Nie Kua  1 , Kendrick C Shih  3 , Tommy C Y Chan  4   5 , Kelvin H Wan  1   4
Affiliations
Review

Dry Eyes After SMILE

Angela H Y Wong et al. Asia Pac J Ophthalmol (Phila). 2019 Sep-Oct.

Abstract

Dry eyes is one of the most common complications after laser vision correction. Small incision lenticule extraction (SMILE) is a flapless procedure with a smaller corneal incision, less corneal nerves are transected during, making it theoretically less prone to dry eyes. Both SMILE and femtosecond-laser-assisted in situ keratomileusis (FS-LASIK) induce a transient worsening in dry eye parameters, but there is evidence showing that SMILE holds promises to have fewer negative impacts on the ocular surface parameters and allow an earlier recovery. SMILE-treated eyes may also have shown less corneal denervation and better corneal sensitivity compared with FS-LASIK eyes. This review summarizes the mechanisms of dry eyes after laser vision correction, the short-term (≤6 months) and long-term (>6 months) results in changes to dry eyes signs and symptoms, and corneal sensitivity of SMILE, as compared with FS-LASIK. Limitation of the studies and reasons accounting for their discrepancies will be discussed. Future randomized controlled trials with standardized postoperative regime are needed for better evaluation of dry eyes after SMILE.

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Conflict of interest statement

The authors have no conflicts of interest to disclose.

Figures

FIGURE 1
FIGURE 1
Flowchart showing how the studies were identified.
See this image and copyright information in PMC

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