Jan 13, 2026
Sudden vision changes can be a brain problem, not just an eye problem—and luckily, there are specialists trained for the job. Judith Warner, MD, a neuro-ophthalmologist, explains how the eyes and brain work together, the red-flag symptoms you should never ignore (like a brief “black curtain” over one eye), and the most common reasons people get referred (unexplained vision loss and double vision).
