The Food and Drug Administration on Thursday approved the first treatment to give limited vision to people who are blind, involving a technology called the “artificial retina.”

With it, people with certain types of blindness can detect crosswalks on the street, burners on a stove, the presence of people or cars, and sometimes even oversized numbers or letters.

Developed over 20 years by Dr. Mark S. Humayun, an ophthalmologist and biomedical engineer at the University of Southern California’s Doheny Retinal Institute, the artificial retina was inspired by cochlear implants for the deaf.

Read more on the New York Times.