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Monofocal IOLs provide accurately focused vision at one distance only; far, intermediate, or near. People who are fitted with these lenses may need to wear glasses or contact lenses while reading or using a computer. These lenses usually have uniform spherical curvature.
The development of IOLs was considered a notable innovation, as patients previously had to wear very thick glasses, or a special type of contact lens, in order to cope with the removal of their natural lens. IOLs can be used to correct other vision problems, such as toric lenses for correcting astigmatism.
Prism correction. Prism lenses (here unusually thick) are used for pre-operative prism adaptation. Eye care professionals use prism correction as a component of some eyeglass prescriptions. A lens which includes some amount of prism correction will displace the viewed image horizontally, vertically, or a combination of both directions.
to freeze and extract the lens. Yttrium aluminium garnet laser (YAG laser) to correct posterior capsular opacification (specially after removal of a cataract, if required), peripheral iridotomy, retinal surgery, laser-assisted sub-epithelial keratectomy ( LASEK) [4] etc. Electrolysis. used for permanent hair removal.
Aphakia – Absence of the lens of the eye; Contact lens – Lenses placed on the eye's surface; Capsulorhexis – Tearing an opening in the lens capsule during cataract surgery; Cataract surgery – Removal of opacified lens from the eye; IOLVIP – Intraocular lens system to compensate for macular degeneration
Intraocular lenses that are implanted into eyes after the eye's natural lens has been removed during cataract surgery are known as pseudophakic. Phakic intraocular lenses are indicated for patients with high refractive errors when the usual laser options for surgical correction ( LASIK and PRK) are contraindicated.