As announced by the Chinese Academy of Ophtalmology, the surgery was done on 5 patients struck with corneal blindness. The treatment is based on the donation of cornea by deceased persons, organized through a charity. Until the proper cornea which will not be rejected by the recipient has been found, the Aysin pupil” manufactured by China Regenerative Medicine International Ltd. is used as a temporary replacement. It is based on a five-layered structure of collagen, synthetic polymer and autologous cell material from the patient.”

China Bio news release, December 22, 2015