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Article

Histopathological study of corneal flap striae following laser in situ keratomileusis in rabbits

  • Authors:
    • Li Liu
    • Fang-Zhou Song
    • Lian-Yun Bao
  • View Affiliations / Copyright

    Affiliations: Research Center of Molecular Medicine and Cancer, Chongqing Medical University, Chongqing 400016, P.R. China, Ningyi Eye Center, Gulou Hospital Affiliated to Nanjing University Medical School, Nanjing, Jiangsu 210008, P.R. China
  • Pages: 895-900
    |
    Published online on: January 8, 2015
       https://doi.org/10.3892/etm.2015.2171
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Abstract

The aim of the present study was to investigate the histopathological changes and wound healing process of rabbit corneas following conventional laser in situ keratomileusis (LASIK) with and without the complication of flap macrostriae. The right eyes of 14 rabbits underwent LASIK with the formation of flap striae (macrostriae group) and the left underwent LASIK alone (control group). Two rabbits were selected at random for sacrifice on days 1, 3, 7 and 14, and at 1, 3 and 6 months postoperatively. The histopathological characters of the corneas were compared by hematoxylin and eosin (H&E), periodic acid-Schiff (PAS) and Masson staining. In the control group, the epithelial basement membrane of the cornea exhibited microstriae and the arrangement of stromal collagen fibers was regular. The width of the microstriae in the flap was 20-40 µm one week after surgery and the microstriae were no longer visible two weeks postoperatively. In the macrostriae group, infiltration of polymorphonuclear cells occurred around the incision and irregular hyperplasia of the epithelium was observed due to undulation of the epithelial basement membrane on the first postoperative day. The collagen fibers and striae of the corneal stroma exhibited irregular undulation one month postoperatively. The area between the corneal flap and stromal bed was distinctly stained by PAS and Masson stains. Macrostriae with a width of 80-120 µm affecting two-thirds of the entire cornea remained visible six months postoperatively. In conclusion, the inflammatory reactions and clinical impact of flap macrostriae were severe. Macrostriae involving two‑thirds of the entire cornea remained visible six months postoperatively. Longer-term studies are required to further elucidate the issues associated with corneal flap striae.
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Copy and paste a formatted citation
Spandidos Publications style
Liu L, Song F and Bao L: Histopathological study of corneal flap striae following laser in situ keratomileusis in rabbits. Exp Ther Med 9: 895-900, 2015.
APA
Liu, L., Song, F., & Bao, L. (2015). Histopathological study of corneal flap striae following laser in situ keratomileusis in rabbits. Experimental and Therapeutic Medicine, 9, 895-900. https://doi.org/10.3892/etm.2015.2171
MLA
Liu, L., Song, F., Bao, L."Histopathological study of corneal flap striae following laser in situ keratomileusis in rabbits". Experimental and Therapeutic Medicine 9.3 (2015): 895-900.
Chicago
Liu, L., Song, F., Bao, L."Histopathological study of corneal flap striae following laser in situ keratomileusis in rabbits". Experimental and Therapeutic Medicine 9, no. 3 (2015): 895-900. https://doi.org/10.3892/etm.2015.2171
Copy and paste a formatted citation
x
Spandidos Publications style
Liu L, Song F and Bao L: Histopathological study of corneal flap striae following laser in situ keratomileusis in rabbits. Exp Ther Med 9: 895-900, 2015.
APA
Liu, L., Song, F., & Bao, L. (2015). Histopathological study of corneal flap striae following laser in situ keratomileusis in rabbits. Experimental and Therapeutic Medicine, 9, 895-900. https://doi.org/10.3892/etm.2015.2171
MLA
Liu, L., Song, F., Bao, L."Histopathological study of corneal flap striae following laser in situ keratomileusis in rabbits". Experimental and Therapeutic Medicine 9.3 (2015): 895-900.
Chicago
Liu, L., Song, F., Bao, L."Histopathological study of corneal flap striae following laser in situ keratomileusis in rabbits". Experimental and Therapeutic Medicine 9, no. 3 (2015): 895-900. https://doi.org/10.3892/etm.2015.2171
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