A type of retina cell plays a more critical role in vision than previously known, a team led by Johns Hopkins University researchers has discovered.
Recent news from The Johns Hopkins University
This section contains regularly updated highlights of the news from around The Johns Hopkins University. Links to the complete news reports from the nine schools, the Applied Physics Laboratory and other centers and institutes are to the left, as are links to help news media contact the Johns Hopkins communications offices.
It would make the perfect question for the popular television show “Are You Smarter than a 5th Grader:” What parts of the eye allow us to see? The conventional wisdom: rods and cones. The human retina contains about 120 million rods, which detect light and darkness, shape and movement, and about 7 million cones, which in addition detect color. Without them, or so we are taught, our eyesight simply would not exist. But that might not be true, according to a study — published July 15 in the journal Neuron and led by Johns Hopkins biologist Samer Hattar — that provides new hope to people who have severe vision impairments or who are blind.