Intacs® segments are designed to be placed in the periphery of the cornea, at approximately two-thirds depth, and are surgically inserted through a small radial incision in the corneal stroma. The Intacs® are designed to allow removal or replacement. Intacs® Corneal Implants are manufactured from polymethylmethacrylate (PMMA) and are available in different thicknesses, ranging from 0.210 mm to 0,450 mm. The product is designed with a fixed outer diameter and width. Intacs® Corneal Implants have positioning holes located at each end of the segment to aid in surgical manipulation.