Factors Affecting the Thickness of Suction Ring in LASIK.

Ko, Myoung Sun; Bae, Sun Ryang; Joo, Choun Ki

Original Article

Journal of the Korean Ophthalmological Society 2001;42(4):618-623.
Published online April 1, 2001.

Factors Affecting the Thickness of Suction Ring in LASIK.

Myoung Sun Ko, Sun Ryang Bae, Choun Ki Joo

¹Department of Ophthalmology, Daejeun St. Mary's Hospital.
²Department of Ophthalmology, Kang Nam St. Mary's Hospital.

LASIK 수술에 사용되는 suction ring 의 크기의 결정 요인과 임상성적의 비교

배선량(Sun Ryang Bae),주천기(Choun Ki Joo),고명선(Myoung Sun Ko)

Abstract

PURPOSE
Suction ring is needed to fix the cornea during LASIK procedure. But if we choose the suction ring inappropriately, we meet the various problems such as conjunctival edema, conjunctival hemorrhage, ocular pain, and prolongation of operation time. To investigates various factors affecting the thickness of suction ring(1-4) in LASIK procedure. METHODS: We performed LASIK procedure by using SCMD microkeratome and VISX STAR laser on 398 eyes from Dec. 1996 to Feb. 1999. We compared difference on pachymetry, keratometry, corneal diameter, spherical equivalent according to the thickness of suction ring and analyzed these factors with One-Way ANOVA test. RESULTS: The results are that keratometry affected size of suction ring significantly. The flap size and hinge size are affected by size of suction ring significantly, but others did not show significant results. CONCLUSIONS: These results suggest that we need to choose the size of suction ring according to keratometry during LASIK procedure for decreasing various complications.

Key Words: LASIK;Microkeratome;Suction ring