However, in some cases it can be a sign of a serious health problem. Your doctor can diagnose this through a visual exam. The ring can be white, gray, or blue and start at the top or bottom of the cornea. Sometimes it can reach the iris and form a full circle. If this is the case, it is usually a warning sign that you have a heart condition.

If you are at low risk of CVD, your doctor will likely prescribe a different type of cholesterol medication, such as B. bile acid binding resins or ezetimibe. These aren't as effective at lowering LDL cholesterol, but they're less likely to interact with other medications and are safe for those who have kidney problems.