Just came across this great letter from a very happy Visian ICL patient. This is a typical response from our ICL patients. ICLs are used to treat moderate to severe nearsightedness, and can often be used in patients who were told that they were poor LASIK candidates. The ICL is also known as a Phakic IOL. It is a lens that is implanted inside the eye to improve uncorrected vision. Results and vision is excellent with the ICL.