Analysis on tear film after LASIK by femtosecond laser with Oculus corneal topography
10.3980/j.issn.1672-5123.2014.06.37
- VernacularTitle:Oculus角膜地形图仪对飞秒激光LASIK术后泪膜的分析
- Author:
Yuan, ZHANG
;
Bing-Bing, JIA
;
Yan, ZHANG
;
Dong-Mei, GAO
;
Yu-Zhen, PANG
- Publication Type:Journal Article
- Keywords:
femtosecond laser;
laser in situ keratomileusis;
dry eye;
tear film
- From:
International Eye Science
2014;(6):1116-1118
- CountryChina
- Language:Chinese
-
Abstract:
AIM:To observe the changes of tear film on the patients after laser in situ keratomileusis ( LASIK) with corneal flap created by femtosecond laser with Oculus corneal topography.
METHODS:Totally 120 myopic patients (240 eyes) were collected who underwent femtosecond laser surgery LASIK from August to September 2013, and these patients can be followed up for 3mo. Tear break-up time ( BUT) and tear meniscus height ( TMH ) with Oculus corneal topography were recorded preoperatively and postoperatively at 1wk;1, 2 and 3mo.
RESULTS: Oculus BUT: there existed obvious differences (P=0. 012, 0. 000, 0. 023<0. 05) in 1wk, 1 and 2mo compared with the preoperative level. While no such obvious difference ( P = 0. 236 > 0. 05 ) existed in 3mo compared with the preoperative level. TMH:there existed obvious differences (P=0. 025, 0. 019, 0. 026<0. 05) in 1wk, 1 and 2mo compared with the preoperative level. No such obvious difference ( P = 0. 375>0. 05 ) existed in 3mo compared with the preoperative level.
CONCLUSION: Femtosecond laser surgery affects the stability of the tear film at a certain time and a certain extent. The mechanism related to many factors. It is temporary and lighted.
