Ask an Eye M.D. Answer Archive
Please read our important medical disclaimer.
What causes a light circle around the pupil of each eye?
You may be referring to an "arcus senilis." An arcus is a ring of lipid (fat) or calcium deposition in the periphery of the cornea. This may be perfectly normal and occurs with aging (thus the name—senile arc, or age associated ring around the cornea). The arcus may occur pathologically in younger people in the setting of high cholesterol. So, if you are referring to a ring that occurs at the junction of the white part of the eye (sclera) and the iris (the colored part of the eye) in an older person, it is probably normal. If the person with the ring is younger, it might be a sign of increased cholesterol. Consider being seen by an Eye M.D. to determine if the "light circle" you are referring to is a sign of a systemic issue that might need further evaluation.
Answered by: Aaron Weingeist, MD
Categories: Eye Conditions
Have a question that hasn't been answered yet? Ask it!
Answered: Jun 18, 2012
Search for Questions & Answers
Meet Our Experts
- Your questions are answered by more than two dozen members of the American Academy of Ophthalmology who volunteer their time with EyeSmart.