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An intraocular lens (IOL) is a lens implanted in the eye usually as part of a treatment for cataracts or for correcting other vision problems such as near-sightedness (myopia) and far-sightedness (hyperopia); a form of refractive surgery.
Phakic intraocular lenses are indicated for patients with high refractive errors when the usual laser options for surgical correction (LASIK and PRK) are contraindicated. [ 1 ] [ 2 ] Phakic IOLs are designed to correct high myopia ranging from −5 to −20 D if the patient has enough anterior chamber depth (ACD) of at least 3 mm. [ 3 ]
This type of IOL placement is called "piggyback" IOLs and is usually considered when the visual outcome of the first implant is not optimal. [48] In such cases, implanting another IOL over the existing one is considered safer than replacing the initial lens. This approach may also be used in people who need high degrees of vision correction. [49]
An optometrist in British Columbia claims to have invented an easily implantable device that provides its wearer with vision "three times better than 20/20" for life. Dubbed the Ocumetics Bionic ...
In patients requiring only distance vision correction, a conventional mono-focal intraocular lens is placed in both eyes after the clear lens is removed. [1] While distance vision is fine in this, reading glasses are required for near vision. [1] Another method is to correct one eye only for distance vision and the other eye for near vision ...
Implantable contact lenses correct vision, including extreme nearsightedness; stay in the eye without maintenance. Patient describes experience with EVO lens. Eye Vision Correction: Permanent ...
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