I have brown eyes but i have recently notice that their is a thin light blue line appear around it. I want to know if that is normal for a 21 year old or is it something i have to worry about ?
Thanks for your Question
The part of the eye that is responsible for eye color is called iris. Light blue color around the brown iris is unusual thing. It can be a normal variation of the iris color which is a benign condition and nothing should be worried about or it can be associated with eye diseases.
Unfortunately i couldn't give you the right answer unless i see it be myself. I would advice you to visit an eye doctor or an optometrist especially if you have other associated signs and symptoms such as blurred vision, eye pain, red eye.