Dr. Peter Campochiaro, a clinician-scientist and the Eccles Professor of Ophthalmology and Neuroscience at the Johns Hopkins University School of Medicine, talks to host Ben Shaberman about N-acetylcysteine (NAC), a drug that shows promise for preserving cone vision (central vision and acuity) in...

Researchers believe the FDA-approved drug can reduce the hyperactivity of ganglion cells to improve vision.