Implantation of the EVO Visian ICL is a surgical procedure, and as such, carries potentially serious risks. The EVO Visian ICL is designed for the correction/reduction of up to -20 diopters (D) of nearsightedness, with or without astigmatism up to 6.0 D, for patients who are 21 to 60 years of age. Before considering EVO Visian ICL surgery you should have a complete eye examination and talk with your eye care professional about the procedure, especially the potential benefits, risks, and complications. You should discuss the time needed for healing after surgery.