First Human Test of Optogenetics Could Restore Sight to the Blind

A decade-old technique that allows researchers to control brain function in lab animals could partially restore sight to the blind.

In a trial sponsored by RetroSense Therapeutics, a startup company in Ann Arbor, Michigan, doctors will inject a harmless virus loaded with DNA from photoreceptive algae into the eyes of 15 patients suffering from retinitis pigmentosa. The experimental procedure represents the first human test of optogenetics, which is a technique that genetically modifies ne

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