Ophthalmology: Sight from Dog and Dogfish

The cornea of the eye is one part of the body that can be transplanted from one human being to another without touching off the immune reaction or rejection mechanism which dooms most skin and organ grafts. Because of this cornea capability, "eye banks" have helped surgeons restore vision to tens of thousands. But at best the banks have difficulty matching supply with demand, and in many parts of the world, where religious scruples intervene, eye banks cannot even get started. Why not use animal corneas?

Professor Paul Payrau of Paris has been doing just that, he told a...

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