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2. Small incision lenticule extraction - Wikipedia

   en.wikipedia.org/wiki/Small_incision_lenticule...

   ReLEx Small incision lenticule extraction (SMILE), second generation of ReLEx Femtosecond lenticule extraction (FLEx), is a form of laser based refractive eye surgery developed by Carl Zeiss Meditec used to correct myopia, and cure astigmatism.

3. Corrective lens - Wikipedia

   en.wikipedia.org/wiki/Corrective_lens

   The eye's Abbe number is independent of the importance of the corrective lens's Abbe, since the human eye: Moves to keep the visual axis close to its achromatic axis, which is completely free of dispersion (i.e., to see the dispersion one would have to concentrate on points in the periphery of vision, where visual clarity is quite poor)

4. Eye surgery - Wikipedia

   en.wikipedia.org/wiki/Eye_surgery

   Refractive surgery aims to correct errors of refraction in the eye, reducing or eliminating the need for corrective lenses. Keratomileusis is a method of reshaping the corneal surface to change its optical power. A disc of the cornea is shaved off, quickly frozen, lathe-ground, then returned to its original power. Automated lamellar keratoplasty

5. Optics and vision - Wikipedia

   en.wikipedia.org/wiki/Optics_and_vision

   A corrective lens is a lens worn in front of the eye, mainly used to treat myopia, hyperopia, astigmatism, and presbyopia. The goal is to bring vision up to 20/20 vision or as close to this as possible. Glasses or "spectacles" are corrective lenses worn on the face a short distance in front of the eye.

6. Limbal relaxing incisions - Wikipedia

   en.wikipedia.org/wiki/Limbal_relaxing_incisions

   Limbal relaxing incisions (LRI) are a refractive surgical procedure to correct minor astigmatism in the eye. Incisions part way through the cornea are made at one side or at opposite edges of the cornea, following the curve of the iris, causing a slight flattening of the cornea in that area. [1]

7. Phakic intraocular lens - Wikipedia

   en.wikipedia.org/wiki/Phakic_intraocular_lens

   A phakic intraocular lens (PIOL) is an intraocular lens that is implanted surgically into the eye to correct refractive errors without removing the natural lens (also known as "phakos", hence the term). Intraocular lenses that are implanted into eyes after the eye's natural lens has been removed during cataract surgery are known as pseudophakic.