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Year : 2011  |  Volume : 6  |  Issue : 1  |  Page : 8-12

The Effect of Mitomycin-C on Corneal Endothelial Cells after Photorefractive Keratectomy

Ophthalmic Research Center, Labbafinejad Medical Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran

Correspondence Address:
Mohammad-Reza Jafarinasab
Associate Professor of Ophthalmology, Ophthalmic Research Center, #23 Paidarfard St., Boostan 9 St., Pasdaran, Tehran 16666
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Source of Support: None, Conflict of Interest: None

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Purpose: To evaluate short-term changes in central corneal endothelial cell density and morphology after photorefractive keratectomy (PRK) with mitomycin-C (MMC) 0.02% in patients with moderate myopia. Methods: In this prospective interventional case series, patients with moderate myopia (spherical equivalent refractive error from ‑4.0 to ‑8.0 D) underwent PRK with a single intraoperative application of MMC 0.02% for 40 seconds. Specular microscopy was performed preoperatively and repeated 6 months after surgery to determine changes in central corneal endothelial cell density (ECD), mean cell area (MCA) and coefficient of variation in cell size (CV). Results: Overall, 42 eyes of 21 participants with mean age of 26.2±6.3 years underwent surgery. Mean preoperative spherical equivalent refractive error was ‑5.2}1.2 D which was reduced to ‑0.4}0.5 D postoperatively (P < 0.001). Mean ECD was reduced insignificantly from 2,920±363 cells/mm2 preoperatively to 2,802±339 cells/mm2 postoperatively (P = 0.59). Similarly, there was no significant change in MCA or CV at six months (P = 0.76 and 0.52, respectively). Conclusion: Application of MMC 0.02% for 40 seconds during PRK in patients with moderate myopia did not significantly affect central corneal endothelial cell density and morphology after a 6 month follow up period.

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