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 window of the eye. It contains five distinguishable layers; the epithelium, or outer covering; Bowmanâs membrane; the stroma, or supporting structure; Descemetâs membrane; and the endothelium, or inner lining. Up to 90 percent of the thickness of the cornea is made up of the stroma.