Chameleons' wandering eyes have fascinated and puzzled scientists since the days of ancient Greece. Now, after millennia of ...

Learn how coiled optic nerves, unlike any seen in other reptiles, give chameleons their extraordinary field of view.

When your optic nerve doesn’t develop all the way, you may not be able to see through that area of your eye. This congenital condition is most often experienced by people who have mothers with ...

Glaucoma creeps in without pain or obvious symptoms, slowly damaging your optic nerve. Regular eye exams and early detection ...

One cause of a sudden loss of vision is referred to in medical terms as ischemic optic neuropathy. There are two types. One is caused by inflamed arteries in the eye that flow to the optic nerve, and ...