Researchers have discovered a way to revive eyes from organ donors after death, an advance that opens doors to progress against age-related macular degeneration, glaucoma and other major causes of blindness. The accomplishment, which many experts hadn’t thought possible, gives scientists the ability for the first time to conduct experiments on a functioning human retina, potentially unlocking a treasure trove of new information about the chemistry of vision and what goes wrong in the intricate network of retinal cells when people start losing their sight.

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