1. Effect of hinge location on corneal sensation and dry eye after laser in situ keratomileusis for myopia.
- Author
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Vroman DT, Sandoval HP, Fernández de Castro LE, Kasper TJ, Holzer MP, and Solomon KD
- Subjects
- Adult, Conjunctiva pathology, Contrast Sensitivity, Cornea innervation, Cornea pathology, Female, Humans, Male, Middle Aged, Myopia pathology, Myopia physiopathology, Postoperative Period, Single-Blind Method, Staining and Labeling, Surveys and Questionnaires, Tears metabolism, Time Factors, Cornea physiopathology, Dry Eye Syndromes etiology, Keratomileusis, Laser In Situ adverse effects, Myopia surgery, Sensation, Surgical Flaps innervation
- Abstract
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.
- Published
- 2005
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