Corneal stromal lenticule transplantation for the treatment of corneal ulcers

Abstract

Purpose. To evaluate the safety and efficacy of using corneal stromal lenticules (CSLs) obtained during refractive surgery Refractive Lenticule Extraction (ReLEx) with the Small Incision Lenticule Extraction (SMILE) procedure for the treatment of corneal ulcers. Methods. This retrospective study included 12 eyes of 12 patients, 7 men and 5 women with varying degrees of corneal ulcer. The mean age was 64 ± 18 (range 34 to 95 years). The monitoring included corrected distance visual acuity (CDVA), slit-lamp biomicroscopy examination, a Seidel test, stability of the graft and anterior segment optical coherence tomography (AS-OCT) inspection. Patients were closely monitored for possible postoperative complications for at least 6 months. Results. In 7/12 (58%) eyes, the corneal ulcer was successfully sealed with CSL and amniotic membrane (AM) without the need for any additional surgical intervention. In 3 eyes, penetrating keratoplasty (PK) was needed in addition to CSL transplantation and in 2 eyes the scleral patch was used to fully seal after CSL transplantation. During the followup period no signs of rejection or infection were detected in any patient. Conclusion. The use of CSLs from ReLEx SMILE may be considered as an alternative method for the treatment of corneal ulcers before a more extensive and definitive solution -PK -is used. Our preliminary findings suggest that properly performed CSL transplantation using cryopreserved lenticules is a safe and effective method to temporarily cover the corneal partial-thickness defect or even perforation.

Chemical, Physical, and Biological Corneal Decellularization Methods: A Review of Literature

“…Te other clinical studies documented safety and efcacy of corneal stromal lenticules (CSLs) obtained by SMILE refractive surgery for the treatment of corneal ulcers and perforations. Tese acellular corneal tissues were cryopreserved at −80 °C from 2 to 6 months before transplantation [90][91][92]. Decellularized corneal stromal laminas obtained from human donor corneas with nonviable endothelium were used in a clinical trial to evaluate safety and efciency in patients with advanced keratoconus.…”