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Does level of myopia affect improvement in visual quality and high order aberrations in early postoperative period of SMILE?

Poster Details

First Author: B.Ekinci Koktekir TURKEY

Co Author(s):    S. Okudan                    

Abstract Details


To compare the changes in high order aberrations and visual quality after small incision lenticule extraction (SMILE) in low, moderate and high myopia.


Department of Ophthalmology, Selcuk University Konya Turkey


The study included 70 eyes of 37 patients who underwent SMILE surgery for myopia correction. Depending on the preoperative spherical equivalent, eyes were classified in three groups as; low (0-3D), moderate (3-6D) and high (over 6D) myopia. All patients had complete ophthalmic examination and corneal aberration measurements with Sirius (CSO, Florance, Italy) corneal topography, preoperatively and postoperatively. The amount of difference and correlations between the changes of total high order aberrations-HOA and point spread function-PSF (as Strehl ratio) with the severity of myopia were evaluated (SPSS 20.0 Inc). A p value of less than 0.05 is considered statistically significant.


There was no difference in postoperative HOA change among three groups. However, the high myopia group had significantly more improvement in PSF, than the other two groups (0.006 and p=0.01). There was no significant correlation between the HOA difference and PSF change with the severity of myopia.


Small incision lenticule extraction may be a better choice in high myopia rather than moderate and low myopia, with more improvement in visual quality, especially in patients who are not suitable for other refractive surgical techniques

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