AIM: To observe the clinical efficacy of the combined use of small incision lenticule extraction (SMILE)-derived lenticule patches in corneal dermoid excision, with fixation of the lenticule patches assisted by fibrin glue. METHODS: Seventeen eyes of 17 patients with corneal dermoid were treated with dermoid removal combined with SMILE-derived lenticule transplantation. All lenticule patches were fixed by fibrin glue. Ocular changes were assessed using slit lamp microscopy and anterior-segmental optical coherence tomography. The best-corrected visual acuity (BCVA) and ocular dioptric variations were examined preoperatively and postoperatively. Intraocular pressure (IOP) was also monitored in all visited time. RESULTS: Totally, 18 lenticule patches were used on 17 eyes of 17 cornea dermoid patients. The mean follow-up time was 11.47±5.28mo. All lenticule patches were successfully glued, kept on its location and maintained transparent during the follow-up time, with a consecutive epithelial cover for 1wk. Nine of the patients could coordinate visual and optometry exam well. Their preoperative BCVA is 0.60±0.35 in decimal, significantly improved to 0.80±0.26 in decimal at 6mo postoperatively (Z=-2.392, P=0.017), but the changes of their corneal astigmatism diopters showed no significance, with 2.22±1.91 D preoperatively, and 2.28±1.31 D at 6mo postoperatively (Z=-0.135, P=0.893). Limbal pannus formation occurred in 4 (23.52%) cases and decreased with the application of tacrolimus eyedrops. IOP increased in 2 (11.76%) cases, but well decreased by timolol maleate eyedrops. All the adult patients or guardians of minor patients were satisfied with the cosmetic improvement. CONCLUSION: Dermoid excision combined with transplantation of SMILE-derived lenticule patches using fibrin glue is a safe and effective novel tectonic keratoplasty procedure for corneal dermoid.
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