 As lenticule extraction techniques evolve, there is a possibility that extracted lenticules can be cryogenically preserved either for future donation, or re-implantation.Proof of concept has been carried out on primates where lenticules were extracted from monkeys and allogenically transplanted into other monkeys with positive results.Contoura Vision was compared against Small Incision Lenticule Extraction (SMILE) to check the effectiveness by Kanellopoulos AJ and the results were published in Journal of Refractive Surgery in 2017.