Arcus senilis is white, blue, or grey rings around the cornea, the clear, dome-like part of the eye. They form in front of the iris, the colored part of the eye. The rings consist of fatty ...

It is a gray, yellow, or white visible half-circles above and below the outer part of the cornea, the clear outer layer on the front of the eye. Arcus senilis may be a symptom of a related condition.

Corneal arcus isn’t the only name for this symptom of high cholesterol, with the Cleveland Clinic saying it can also be referred to as arcus senilis, or arcus juvenilis, if someone is over the ...