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
The cornea is the transparent outer layer at the front (anterior) of the eye. The sclera, the white of the eye, is composed of a tough covering that protects the eyeball. In medical terms, a penetrating injury is a wound, or foreign object that enters the eye but does not completely pass through the cornea or sclera.n medical terms, a simple injury involves only the cornea or sclera and may be penetrating or perforating. Other eye structures are not injured in a simple injury. A complicated injury perforates the eye and involves other eye structures in addition to the cornea or sclera.