In the elderly,<unk>  is a benign condition that does not require treatment. The presence of an<unk>  in males under the age of 50 may represent a risk factor for cardiovascular disease, and these individuals should be screened for an underlying lipid disorder. The opaque ring in the cornea does not resolve with treatment of a causative disease process, and can create cosmetic concerns.
Arcus senilis
Limbus sign
Crepitus
Limbal ring
Pachyonychia congenita
Tinea imbricata
Lichen striatus
Dolichonychia