retrosense
Latest
Blind woman may see thanks to gene therapy and light
Optogenetics, or mixing gene therapy with light treatments, is finally getting a proper field test: doctors have given a blind Texas woman the first optogenetics-based therapy in hopes of restoring some of the vision lost to a degenerative retina disease. The procedure injected her eye with viruses containing DNA from light-sensitive algae, letting them mimic the eye's rods and cones by generating electricity whenever they're subjected to light. The patient won't get full vision even if the therapy is a runaway success, but it could be enough to let her know when there's nearby activity.
Algae DNA could help the blind see in upcoming trials
Optogenetics is one of the greatest achievements in gene splicing over the last decade, as it has helped researchers see how the brain works in animals by making neurons react to light. For the first time, however, the technique will be tried on a human subjects to help legally blind folks see for the first time. Using research developed by Wayne State University scientist Zhuo-Hua Pan, a company called RestroSense will inject a virus doped with light-sensitive algae DNA directly into a patient's eyes. So far, the only successful attempts at restoring vision in humans has come using the Argus II implant.
