[Use of intra-stromal corneal ring segments (INTACS) in refractive surgery]

Implantation of intrastromal corneal rings segments is a new refractive procedure. INTACS consists of 2 separate segments placed in the midperipheral cornea, in specially preparing lamellar channels. Polymethylo methacrylate rings, which flatter the anterior curvature of the cornea. The peripheral localization of these rings leaves the central cornea untouched. The 2 main advantages of the INTACS are, that it preserves the corneal center and is removable. Segments serve for the reduction of myopia from -1.00 D to -5.00 D. The refractive correction is modulated by INTACS thickness, which ranged from 0.25 to 0.45 mm.