Double vision, or diplopia, causes people to sees two images instead of one. The condition can be benign or arise from a serious medical condition.
Keratoconus is a progressive degeneration of the cornea. As the cornea becomes thinner and changes to a cone-like shape, vision becomes blurry.
Glaucoma refers to a group of diseases that cause optic nerve changes and can result in vision loss. Learn about symptoms and treatment.