Abstract
Corneal stromal lenticule is a part of corneal stroma, which can be created by manual dissection, by femtosecond laser from the donor cornea, but chiefly it is a waste product of a refractive procedure ReLex SMILE (Small Incision Lenticule Extraction). Corneal lenticule has a huge potential in corneal surgery. In recent years, many studies have been published to show the possibility to use this tissue to treat corneal defects, as well as in refractive surgery. Thanks to the quantity of lenticules which arise every day during SMILE operations, this tissue is much more accessible than any other kind of corneal tissue. According to the experience with lenticule implantation in animal models, or even human patients, lenticule implantation is considered safe, reversible method, which is not associated with immune rejection or other severe complications. However, the crucial step before the process of lenticule implantation, is proper preservation of this tissue. Donor corneal tissue containing endothelium is usually preserved in hypothermia and then usable maximally for two weeks. Newer methods such as organ culture storage and use of a sterile cornea prolong the time of usability of the tissue. The possibilities for corneal lenticule storage are theoretically wider thanks to the fact, that we do not need to preserve fragile cellular structures. Besides the storage in hypothermia, other preserving methods such as cryopreservation and storage after decellularization have been tested. This review aimed to examine the current literature that describes possible methods of corneal lenticule preservation. A comprehensive search was created based on articles published in English on PubMed.gov, Cochranelibrary.com and Scopus.com using following keywords: corneal lenticule preservation, corneal lenticule storage, cold storage corneal lenticule, corneal lenticule cryopreservation till 2020.
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All data supporting our findings will be shared upon request, although the majority is contained within the manuscript.
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I would like to express my special regards to the Charles University Grant Agency.
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Nemcokova, M., Dite, J., Klimesova, Y.M. et al. Preservation of corneal stromal lenticule: review. Cell Tissue Bank 23, 627–639 (2022). https://doi.org/10.1007/s10561-021-09990-0
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DOI: https://doi.org/10.1007/s10561-021-09990-0