Yonsei Med J.  1999 Jun;40(3):221-225. 10.3349/ymj.1999.40.3.221.

Analysis of the factors affecting decentration in photorefractive keratectomy and laser in situ keratomileusis for myopia

Affiliations
  • 1Department of Ophthalmology, Yonsei University College of Medicine, Seoul. Korea. jblee88@yumc.yonsei.ac.kr
  • 2The Institute of Vision Research, Yonsei University College of Medicine, Seoul, Korea.
  • 3Department of Ophthalmology, Yonsei University Wonju College of Medicine, Wonju, Korea.

Abstract

To evaluate the relationship between ablation zone demm in PRK and 88.7% were decentered less than 0.75 mm in LASIK. The most meridional displacement was toward the superonasal quadrant; 46% in PRK and 51% in LASIK. There was less decentration in males, in the 2nd-operated eye, in older age, PRK, in larger ablation diameter, and in shallower ablation depth, but these differences were not statistically significant.

Keyword

Decentration; photorefractive keratectomy; laser in situ keratomileusis

MeSH Terms

Adult
Corneal Transplantation/methods*
Factor Analysis, Statistical
Female
Human
Keratectomy, Photorefractive, Excimer Laser*
Laser Surgery*
Male
Middle Age
Myopia/surgery*
Pupil*
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