Diagnosing illness through the eye, is nothing new, according to Dr. Marco Zarbin, chief of ophthalmology at the University of Medicine, Dentistry, New Jersey.
“It happens all the time,” he said, from rare conditions to diseases like multiple sclerosis, leukemia, brain tumors.
“If you look at your brain, two-thirds of it is dedicated to some aspect of vision,” said Zarbin. “It’s a big deal.”
Eye doctors emphasize that regular exams are important.