What is a visible sign of arcus senilis?

Arcus senilis is characterized by a visible white or grayish ring that appears in the peripheral cornea, often observed in older adults. This condition is caused by the deposition of lipid materials in the corneal stroma, which leads to the formation of the ring. It is generally considered a benign change associated with aging, though it can also indicate higher cholesterol levels in some younger individuals.

The prominence of this white ring is a key diagnostic feature, making it the most recognizable sign of arcus senilis. It typically does not cause any vision impairment and is not related to any acute pathological changes. Understanding the appearance and implications of arcus senilis is important for clinicians, as it can offer insights into a patient's overall health, particularly concerning lipid metabolism.