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Corneal arcus
System: General & Eye–Ear Signs · All general & eye–ear signs
What it is — and how it is elicited
A pale greyish-white ring around the edge of the cornea, separated from the rim by a thin clear zone.
What a positive finding suggests
Common and usually benign with age; in people under about 45 it is associated with inherited lipid disorders such as familial hypercholesterolaemia.
Related signs — General & Eye–Ear Signs
Browse the C section of the A–Z list or return to the Clinical Signs hub.
Please note: This page is an educational reference about clinical examination signs. A clinical sign supports — and never replaces — a full clinical evaluation, examination and appropriate testing. A sign being present does not by itself prove a diagnosis, and an absent sign does not rule one out. If you have symptoms that worry you, see a health professional.