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National Repository of Grey Literature 1 records found  Search took 0.01 seconds. 
Implementation of novel methods of tissue preparation and storage for transplantation purposes in ophthalmology
 Rybičková, Ivana ; Jirsová, Kateřina (advisor) ; Vlková, Eva (referee) ; Čejková, Jitka (referee)
Introduction: Recent advances in posterior lamellar keratoplasty necessitated the preparation of posterior corneal lamellae even in the Czech Republic. The aim of this work was to introduce and standardize a novel method of manual preparation of corneal lamellae for Descemet Membrane Endothelial Keratoplasty with a Stromal rim (DMEK-S) in an ocular tissue bank. After setting the criteria for endothelial quality, we obtained a licence to provide the tissues for transplantation purposes. The obtained results were analysed after two years. Furthermore, a novel lamellar insertion technique using a cartridge was assessed. The potentials for the long-term storage of posterior corneal lamellae by the vitrification in liquid ethane was studied using human amniotic membrane as a model tissue. Material and Methods: Corneoscleral buttons stored in tissue cultures were used to prepare lamellae consisting of a central zone of endothelium and Descemet membrane supported by a stromal rim at the periphery. The manual preparation was performed on an artificial anterior chamber using the big bubble technique. Endothelial quality was assessed before storage, before and immediately after preparation as well as after 2 days of storage at 31řC. A group of 12 corneas with a live endothelial cell density ≥ 2500 cells/mm2...
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