Author:
Liu Shengtao,Liu Jingying,Cheng Chiwen,Cai Yu,Huang Yangyi,Han Tian,Xiao Yichen,Zhou Xingtao
Abstract
Purpose:
To compare the effective optical zone (EOZ) and centration in eyes with high myopia after small incision lenticule extraction (SMILE) and femtosecond laser–assisted in situ keratomileusis (FS-LASIK) using a novel method.
Methods:
Forty eyes of 40 consecutive patients with high myopia scheduled for SMILE or FS-LASIK were enrolled in the study. The EOZ, optical zone decentration, and corneal aberrations were analyzed using Scheimpflug imaging. These values were then analyzed and compared between the two procedures 6 months after surgery.
Results:
The mean EOZ diameter for SMILE (4.41 ± 0.14 mm) was larger than that for FS-LASIK (4.24 ± 0.28 mm;
P
= .002), corresponding to reductions of 1.60 ± 0.11 and 1.71 ± 0.21 mm, respectively, compared with the programmed optical zone (POZ) (
P
= .007). Moreover, the total decentration for SMILE (0.33 ± 0.12 mm) was greater than that for FS-LASIK (0.27 ± 0.15 mm;
P
= .020). The induction of spherical aberration (SA) was lower with SMILE than with FS-LASIK (
P
= .007).
Conclusions:
A larger EOZ and less SA were observed after SMILE than after FS-LASIK in eyes with high myopia.
[
J Refract Surg
. 2023;39(11):736–740.]
Cited by
2 articles.
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