Surgical instruments, surgical techniques, grafts, cell and tissue isolation techniques, and a method for transplanting retinal cells, including photoreceptors, retinal pigment epithelium, and choroidea within their normal configuration, or all three tissues in a co-transplantation procedure are pro...http://www.google.fr/patents/US5962027?utm_source=gb-gplus-shareBrevet US5962027 - Retinal cell transplant