The Change of Eyeball Contour and Factors Affecting Corneal Flap using Automated Microkeratome in LASIK.

Lee, Eun Suk; Choe, Chul Myong; Lee, Jae Bum

Original Article

Journal of the Korean Ophthalmological Society 2002;43(6):948-952.
Published online June 1, 2002.

The Change of Eyeball Contour and Factors Affecting Corneal Flap using Automated Microkeratome in LASIK.

Eun Suk Lee, Chul Myong Choe, Jae Bum Lee

¹Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, Seoul, Korea. jblee88@yumc.yonsei.ac.kr
²ALC (Asian Laser Center) Eye Clinic, Seoul, Korea.

라식시 자동미세각막절삭기 사용에 따른 안구 변화와 각막절편에 미치는 영향 인자

이은석 ( Eun Suk Lee ) , 최철명 ( Chul Myong Choe ) , 이재범 ( Jae Bum Lee )

Abstract

PURPOSE
To evaluated the effect of suction ring on eyeball contour and its influence on the corneal flap made in LASIK(laser in situ keratomileusis). METHODS: We measured corneal thickness and axial length of 47 eyes, before and during application of the suction ring, in those which had undergone LASIK. The diameter and thickness of corneal flap made with Automated Corneal Shaper(R) were also measured in operation room. RESULTS: When applying suction ring while making a corneal flap, corneal thickness and axial length were decreased significantly(p<0.05), and the diameter of the flap was decreased as preoperative corneal curvature decreased(p<0.05). CONCLUSIONS: Careful attention is needed not to give an eyeball unnecessary pressure which may result in intraocular damage or flap complications such as free cap especially when their corneal curvature is too flat.

Key Words: Automated microkeratome;Corneal flap;Intraocular damage;LASIK;Suction ring