What physical sign is indicated by a gray or white ring around the iris?

The presence of a gray or white ring around the iris is known as Arcus Senilis. This condition is commonly seen in older adults and is characterized by the deposition of lipid materials in the corneal margin. It typically does not indicate a vision problem or significant disease; rather, it is often considered a normal sign of aging. The lipid deposits can give the appearance of a ring that is more prominent in individuals with increased cholesterol levels, though it can also occur in healthy individuals as they age.

Recognizing Arcus Senilis is essential in clinical practice as it helps differentiate between age-related changes and potential pathological conditions. Understanding this sign is important, especially in the context of comprehensive eye assessments, as it can provide insight into the patient's overall lipid metabolism and may prompt further investigation if other signs of hyperlipidemia are present.