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 eyeâs outermost layer. It is the clear, domeÂ­shaped surface that covers the front of the eye. It plays an important role in focusing your vision. Although the cornea may look clear and seem to lack substance, it is a highly organized tissue.