You want to put your best face forward everywhere you go, but that is difficult to do when you have dark circles under your eyes. Discoloration of the skin under or around the eyes is a common problem that can be the result of allergies, certain medication use and the normal effects of aging.

The optic nerve is your eye's connection to the brain and is critical to how you process sight. If the optic nerve becomes swollen, vision can be dramatically affected.