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José-Alain Sahel

José-Alain Sahel

Chair, Department of Ophthalmology, University of Pittsburgh

Appears in 1 story

Stories

The race to restore sight

New Capabilities

Co-senior author and vision restoration pioneer

Stanford researchers implanted a chip smaller than a Tic Tac under the retinas of 38 blind patients. A year later, 27 could read again. Some read entire books. The PRIMA device, published October 20, 2025 in the New England Journal of Medicine, is the first prosthetic to restore functional vision to people with macular degeneration—the leading cause of irreversible blindness.

Updated Jan 9