Laser Eye Surgery The implanting of phakic intraocular lens
Phakic intraocular lens implantation is a technical surgery which allows the implantation of an additional artificial crystalline lens inside the eye to correct extreme refractive defects (severe myopia up to 20 diopters and farsightedness higher than 6 diopters).
The intraocular phakic lenses (IOL) are added to the natural crystalline lenses without replacing them (as occurs instead for cataracts). A very small incision is effected on the cornea, through which the lens is inserted into the eye.
intraocular phakic lenses, technical surgery IOL
The implanting of phakic intraocular lenses take a few minutes with local or topical anesthesia (administering anesthetic drops) and recovery is practically immediate. It is however to some degrees an invasive intervention (the eye must be opened to insert the lens) and is not applicable to all types of eyes.
implanting phakic intraocular lenses
The intraocular implanting of phakic lenses is suitable to those with hyperopia or severe myopia who are not indicated for Lasik or PRK laser surgery.
There are various types of phakic lenses:
- phakic lenses for the anterior chamber (PACL); lenses implanted in front of the iris;
- phakic lenses for the rear chamber (ICL, PRL): lenses implanted between the iris and the crystalline lens.
types of phakic lenses
The advantage in the implanting of phakic lenses is also its reversibility: should complications arise the intraocular lens introduced can be removed. The interesting point is however the possibility to combine two interventions (ICL and LASIK/PRK) to obtain great corrections.
advantages implanting of phakic lenses
The contraindications of the phakic lens implantation concerns 5-10% of cases, due to iritis (inflammation of the anterior part of the eye), secondary glaucoma, cataracts and pupillary deformation.