Comparison of tear secretion and tear film instability after photorefractive keratectomy and laser in situ keratomileusis

Jae Bum Lee, Chang Hoon Ryu, Jeong Ho Kim, Eung Kweon Kim, Hong Bok Kim

Research output: Contribution to journalArticle

112 Citations (Scopus)

Abstract

Purpose: To evaluate and compare tear secretion and tear film instability following photorefractive keratectomy (PRK) and laser in situ keratomileusis (BASIK). Setting: Department of Ophthalmology, Yonsei University School of Medicine, Seoul, Korea. Methods: In a prospective study, 36 eyes (21 patients) had PRK and 39 eyes (25 patients) had LASIK to correct myopia. Tear secretion and tear film instability were tested preoperatively and 3 and 6 months postoperatively using Schirmer test values, tear breakup time (BUT) scores, and tear osmolarity. Results: Six months after surgery, the change in Schirmer test values from preoperative levels was -14.57% ± 6.39% (SD) in the PRK eyes and -23.40% ± 5.94% in the LASIK eyes and the change in BUT scores, -12.54% ± 8.28% and -18.79% ± 13.01%, respectively. The change in tear osmolarity was 14.95% ± 6.46% and 35.63% ± 8.51%, respectively. Conclusions: The decrease in tear secretion was greater after LASIK than after PRK at 6 months. Proper treatment of dry eye is required after LASIK and PRK, particularly in the LASIK postoperative period. (C) 2000 ASCRS and ESCRS.

Original languageEnglish
Pages (from-to)1326-1331
Number of pages6
JournalJournal of cataract and refractive surgery
Volume26
Issue number9
DOIs
Publication statusPublished - 2000

All Science Journal Classification (ASJC) codes

  • Surgery
  • Ophthalmology
  • Sensory Systems

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