Phakic intraocular lens
A phakic intraocular lens (PIOL) is a special kind of intraocular lens that is implanted surgically into the eye to correct myopia (nearsightedness). It is called "phakic" (meaning "having a lens") because the eye's natural lens is left untouched. 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 lens | |
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Photo of an eye after PIOL-implantation, 24 hours after surgery. The lens is visible in front of the iris; the pupil is still small due to presurgery eyedrops. |
Phakic intraocular lenses are indicated for patients with high refractive errors when the usual laser options for surgical correction (LASIK and PRK) are contraindicated. 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.
Three types of phakic IOLs are available:
- Angle-supported
- Iris-fixated
- Sulcus-supported intraocular lens
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