A phakic intraocular lens (PIOL) is a special kind of lens that is implanted surgically into the eye to correct myopia (nearsightedness). The eye's natural lens is left untouched. It is almost like a permanent contact lens being implanted in the eye. These implantable lenses are indicated for patients with high refractive errors when laser options for surgical correction (Lasik and PRK) are contraindicated. Phakic IOLs are designed to correct high myopia ranging from −5 to −20 D. Lasik can correct myopia up to -12 to -14 D. For patients with high myopia phakic intraocular lenses are a better option than excimer laser surgery. Phakic intraocular lenses can be implanted for patients that are 21 years or older and have a stable refraction for at least 6 months.
PIOLs have the advantage of treating a much larger range of myopic and hyperopic refractive errors than can be safely and effectively treated with corneal refractive surgery. In addition, the PIOL is removable; therefore, the refractive effect should theoretically be reversible. Because the eye’s natural lens is untouched you will still have normal accommodation.
1. A lens is implanted between you cornea (the clear window of your eye) and iris (the colored part of your eye). It is attached to your iris to keep the lens in place.
If you are not a candidate for laser vision correcting surgery like LASIK this might be an option to get spectacle independence.