Vitamin A-deficiency, also known as Hypovitaminosis A, can lead to night blindness or the inability to see in the dark. Night blindness is one of the first signs of vitamin A deficiency...read on.
Leonardo Da Vinci, was the first person credited with sketching and describing the use for contact lenses in 1508...read on.
Glaucoma: A disease of the eye marked by increased pressure within the eyeball. Untreated, glaucoma can damage the optic nerve, which results in vision loss...read on.