The following surgical procedures may be used for myopia:
- Radical keratotomy Incision of the cornea to reduce refractive power; rarely performed today.
- Intrastromal corneal ring segments (INTACS) Insertion of small half rings in front of the cornea; used for myopia up to – 4.0 diopters
- Photorefractive keratectomy flattening of the cornea; use in myopia up to – 6.0 diopters
- Laser-assisted epithelial keratomileusis (LASEK) corneal correction and insertion of a therapeutic contact lens; used for myopia up to – 6.0 diopters
- Laser-assisted in situ keratomileusis (LASIK) corneal correction; use for myopia up to – 8.0 (-10.0) diopters
- Implanted contact lens use in myopia from – 10.00 to – 20.0 diopters.
- Artificial lens implantation + LASIK (bioptics) two-stage procedure combining LASIK and implantation of a lens, rounded off by a fine corrector after approximately three months; use for myopia from – 10.0 to – 28.0 diopters.
- Clear Lens Extraction Removal of the crystalline lens and insertion of an artificial lens; used for myopia up to – 28.0 diopters.
