Journal
JOURNAL OF CATARACT AND REFRACTIVE SURGERY
Volume 31, Issue 10, Pages 1881-1887Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jcrs.2005.03.074
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- NEI NIH HHS [EY014793] Funding Source: Medline
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Purpose: To evaluate the effects of a superior or nasal hinge location on corneal sensation and dry eye after laser in situ keratomileusis (LASIK). Setting: Magill Research Center for Vision Correction, Storm Eye Institute, Medical University of South Carolina, Charleston, South Carolina, USA. Methods: This prospective randomized masked study included 47 patients having bilateral myopic LASIK surgery. The first eye was randomly assigned to have a nasal or superior hinge flap; the fellow eye had the alternate location. Visual acuity, contrast sensitivity, corneal sensation, basic secretion test, tear film breakup time, conjunctival and corneal staining, and a subjective questionnaire were evaluated preoperatively and postoperatively at 1 week and 1, 3, and 6 months. The Wilcoxon signed rank test and paired t test were used for comparison. Results: Dry eye occurred with the same frequency in both groups. However, eyes with the nasal hinge had significantly better nasal sensation than those with the superior hinge (P<.05) at 1 month. Conclusion: Better nasal corneal sensation was found at 1 month in the nasal hinge group but there was no difference in any other parameters measured.
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