Arcus Senilis Corneae

Gray-white ring of corneal lipid deposits in limbus of the eye. Usually double-sided. It arises at the age of over 60. Its outer perimeter is sharply demarcated as opposed to the less sharply demarcated inner perimeter. Lipid deposits diffuse from the limbal vessels. When created before the age of 50, we look for metabolic disorders of lipids (hypercholesterolemia) = arcus lipoides corneae. It does not affect visual acuity.