Optogenetic Therapy Restores Light Perception in Blind Patients, Clinical Trial Shows

Clinical trial results published in the New England Journal of Medicine (NEJM) on October 8, 2026, demonstrate that Nobel Prize-winning optogenetic technology can restore light perception in patients who have lost vision due to retinal degenerative diseases. In a trial involving 10 patients with retinitis pigmentosa, 7 out of 10 showed improved light perception, with some able to locate and touch objects using light-stimulating goggles. Researchers injected a gene producing a light-responsive protein into the eyes to enable residual nerve cells to perceive light. The treatment did not restore normal vision or reading ability, and larger-scale trials are needed.