Analysis on postoperative variation of corneal posterior surface heights after femtosecond LASIK and small incision lenticule extraction of high myopia
10.3980/j.issn.1672-5123.2016.10.53
- VernacularTitle:FS-LASlK和SMlLE矫正高度近视术后角膜后表面高度的变化
- Author:
Yue-Ming, ZHOU
;
Jun, CHEN
;
Wen, LIN
;
Xiao-Dong, LIN
;
Ke-Jie, LIN
;
Liang-Ding, ZHENG
- Publication Type:Journal Article
- Keywords:
laser in situ keratomileusis;
femtosecond LASlK;
small incision lenticule extraction;
Pentacam;
high myopia;
corneal posterior surface heights
- From:
International Eye Science
2016;16(10):1978-1980
- CountryChina
- Language:Chinese
-
Abstract:
AIM:To contrast analysis of postoperative variation of corneal posterior surface heights after Femtosecond LASlK ( FS - LASlK ) and small incision lenticule extraction ( SMlLE) for high myopia.
●METHODS: Sixty-seven cases of high myopic patients (132 eyes) operated with laser corneal refractive in our hospital from May to Dec. in 2015 (-6. 00D≤spherical equivalent degree≤-10. 00D) were selected and divided into FS-LASlK group and SMlLE group. The thickness of corneal flaps at FS-LASlK and the thickness of map at SMlLE were designed to be 110μm. Corneal posterior surface heights were examined by Pentacam at preoperation, postoperative 3 and 6mo after FS-LASlK and SMlLE operation. Surface height changes after preoperative, postoperative 3 and 6mo were compared by measuring Pentacam corneal analysis system.
●RESULTS: Six months after operation, the FS-LASlK posterior corneal surface height was 6. 47 ± 1. 65mm, significantly higher than 5. 20 ± 1. 32mm before operation. SMlLE posterior corneal surface height was 6. 40 ± 1. 33mm, significantly higher than 5. 18 ± 1. 25mm before operation, the differences were statistically significant( P<0. 05). Six month after surgery, two methods of corneal surface height variation obtained was 1. 29 ± 1. 28mm and 1. 22 ± 0. 89mm, there was no significant difference ( P>0. 05).
●CONCLUSION:After FS-LASlK and SMlLE, the corneal posterior surface is protrusive. FS - LASlK is slightly obvious than SMlLE in early period. The stability of the posterior surface is better after SMlLE.
