The treatment involves implanting two tiny, clear, crescent-shaped plastic ring segments, called Intacs, into the periphery of the cornea, flattening the cornea to correct the nearsightedness.
Nearsightedness occurs when the cornea curves too steeply.
The biggest advantage of the Intacs is that they are removable. This opens up vision correction surgery to the whole group of people who are hesitant about irreversible laser-based surgery.