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You can’t always get what you estimate! The prediction of postoperative corneal thickness in small incision lenticule extraction

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Session Details

Session Title: Presented Poster Session: Keratorefractive Results II

Venue: Poster Village: Pod 2

First Author: : A.Bozkurt Oflaz TURKEY

Co Author(s): :    E. Bengu   S. Okudan           

Abstract Details


To compare the estimated post-operative central corneal thickness with postoperative actual central corneal thickness in small incision lenticule extraction.


Department of Ophthalmology, Selcuk University


A retrospective study was conducted with 70 eyes of 37 patients who underwent SMILE surgery for myopia correction. All patients had complete ophthalmic examination and topography evaluation with Sirius (CSO, Florance, Italy) corneal topography, preoperatively and in postoperative first month. Estimated corneal thickness was accepted as sum of cap thickness and residual stromal thickness (RST). Correlation between estimated and actual postoperative first month central corneal thickness was analyzed with SPSS and a p value of less than 0.05 is considered statistically significant.


The mean estimated central corneal thickness (CCT) was 467±34µ, while the mean actual postoperative CCT measured with topography device was 461±40µ. There was significant difference between estimated and actual measured CCT in first month of surgery (p=0.001).


The amount of change in central corneal thickness may be different than we estimated preoperatively. Although SMILE is suggested as a safe method, thin corneas are still challenging cases in refractive surgeries.

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