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Adhesion of laser in situ keratomileusis-like flaps in the cornea: effects of crosslinking, stromal fibroblasts, and cytokine treatment

Mi, Shengli, Dooley, Erin Patricia, Albon, Julie, Boulton, Michael Edwin, Meek, Keith Michael Andrew and Kamma-Lorger, Christina S. 2011. Adhesion of laser in situ keratomileusis-like flaps in the cornea: effects of crosslinking, stromal fibroblasts, and cytokine treatment. Journal of Cataract & Refractive Surgery 37 (1) , pp. 166-172. 10.1016/j.jcrs.2010.07.028

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PURPOSE: To evaluate 3 approaches, both cellular and acellular, to improve the healing of laser in situ keratomileusis flaps in bovine corneas. SETTING: School of Optometry and Vision Sciences and Cardiff Institute of Tissue Engineering and Repair, Cardiff University, Cardiff, United Kingdom. DESIGN: Experimental study. METHODS: Laser in situ keratomileusis–like flaps were created in bovine corneas, and the flap bed was treated with tumor necrosis factor-a, interleukin-1a, Fas ligand, transforming growth factor-b1, or activated stromal fibroblasts. In separate experiments, flaps were created and repositioned. The corneas were then crosslinked using ultraviolet-A (UVA) light. All samples were then placed in organ culture for up to 4 weeks. Untreated samples acted as controls. RESULTS: All treatments increased the adherence of the stromal flap. This was achieved at the expense of corneal clarity except in the case of crosslinking (CXL). In this case, the flap adhesion force immediately increased while the cornea remained clear. The force then decreased gradually during organ culture, although it remained at twice the level of the control corneas after 3 weeks in culture. CONCLUSIONS: The results suggest that riboflavin–UVA CXL is a hopeful approach for increasing the adherence strength of corneal flaps while keeping the cornea clear. Further studies are necessary to confirm the durability of the strengthening effect and to exclude serious late complications.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Optometry and Vision Sciences
Subjects: R Medicine > RE Ophthalmology
Publisher: Elsevier
ISSN: 0886-3350
Last Modified: 05 May 2019 19:24

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