Change in Fluorescein clearance and Tear Film Stability following Laser in situ Keratomileusis.
- Author:
Hyun Hu LEE
1
;
Kyung Cha PARK
;
Tae Hoon CHOI
;
Ha Bum LEE
Author Information
1. Department of Ophthalmology, Kangdong Sacred Heart Hospital, College of Medicine, Hallym University, Seoul, Korea.
- Publication Type:Original Article
- Keywords:
Blink rate;
BUT;
Corneal sensitivity;
Fluorescein clearance;
LASIK
- MeSH:
Fluorescein*;
Humans;
Keratomileusis, Laser In Situ*;
Male;
Myopia;
Nerve Fibers;
Reflex;
Sensation;
Tears*;
Visual Acuity
- From:Journal of the Korean Ophthalmological Society
2001;42(8):1178-1185
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To study the change in corneal sensitivity, tear film stability, tear clearance and blink rate after LASIK. METHODS: The authors have performed LASIK to correct the visual acuity in myopia of 3 males and 18 females(42 eyes). The corneal sensitivity(Cochet-Bonnet esthesiometer), tear film break-up time, fluorescein clearance and blink rate were measured prior to operation, 2 weeks, 1 and 3 months after LASIK. RESULTS: There was decrease in corneal sensitivity after LASIK, which did not recover to the pre-operative level by 3 months after LASIK. To restore corneal sensitivity, more time was needed for regrowth and maturation of the nerve fiber. The decrease in BUT scores 1 and 3 months after LASIK was statistically significant. The decrease in blink rate after LASIK was also statistically significant. The increase in FCT concentration grade was not statistically significant. There was a trend toward a reduction in blink rate in the group with more correction. CONCLUSIONS: Symptoms suggestive of relative tear deficiency such as foreign-body sensation, visual fluctuation and absence of reflex tear have described after LASIK. Change in corneal sensitivity, tear film stability and blink rate were associated with such dry eye symptoms.
