Some birthmarks are from extra color (pigment) in the skin. Other birthmarks are blood vessels that are bunched together or don't grow normally. It's not clear why some children have birthmarks and others don't.
a thickening of the cornea may indicate swelling swelling usually occurs from damage to the back the layer of the cornea associated with aging trauma or disease of the eye the swelling can be observed for progression or medically treated with topical hyper osmotic agents
Cornea. Say: kor-nee-uh. It's part of your eye, but you've probably never noticed it before. The cornea is thin, clear and covers your eye. It's important because it helps you see by focusing light as it enters the eye. So take a good look at your eye the next time you look in the mirror, and try to spot your cornea!