27 July 2018 : Animal Research
An Experimental Study of Femto-Laser in Assisting Xenograft Acellular Cornea Matrix Lens TransplantationXiaoli Zheng1BD, Dan Zhang1EG, Siyuan Li1DF, Jing Zhang1AC, Juan Zheng2BD, Liqun Du3EG, Jianlu Gao1AC*
Med Sci Monit 2018; 24: ANS5208-5215
BACKGROUND: The aim of this study was to evaluate the feasibility of using a femto-laser in assisting xenograft cornea matrix lens transplantation in correcting ametropia, along with evaluating the effectiveness and predictability of this procedure.
MATERIAL AND METHODS: A corneal matrix pouch was prepared on the right eyes on 8 healthy New Zealand rabbits by a femto-laser that was also employed to perform small incision lenticule extraction (SMILE) on 8 bovine cornea matrix lenses (+6D). A lens was treated acellular and implanted into a right rabbit cornea matrix pouch. Surface inflammation was observed at 1, 2, 4, 8, 12, and 24 weeks after surgery. Anterior ocular segment optical coherence tomography (OCT), corneal topography, retinoscopy, and cornea endothelial cell enumeration were performed.
RESULTS: All the surgeries were successfully performed without any complications. The hyperopia condition of the rabbit eyes transformed into myopia status at an early stage and gradually developed hyperopia. Diopter at 24 weeks after surgery was 1/3 of that before surgery. Central corneal thickness stabilized at 4 weeks after surgery. Anterior segment OCT showed a clear lens edge at early post-operative stage, and blurred edge at 24 weeks later, indicating gradual fusion with the rabbit corneal matrix.
CONCLUSIONS: Femto-laser assisted xenograft corneal matrix lens transplantation is safe and effective in correcting ametropia, with satisfactory predictability, thus providing novel choice for correcting ametropia.
Keywords: Cornea, Feasibility Studies, Transplantation, Heterologous
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