Phakic Intracoular lenses (IOLs) are implantable lenses that are placed in the eye in persons who have a normal natural lens but suffer from severe refractive errors.
They are generally used to reduce or eliminate myopia or hypermetropia that is too severe to be corrected by laser refractive surgery.
Currently, there are 2 basic types of Phakic IOLs
Anterior chamber phakic IOLs
An anterior chamber IOL is attached to the front of the iris. Therefore, the lens resides in the space between the back surface of the cornea and the front surface of the iris. A typical example would be Verisys Phakic IOLs, produced by Abbott Medical Optics (AMO).
These implantable contact lenses can be used to correct short-sight (from -3D to -23D) and long-sight (from +1D to +12D). Toric ARTISAN lenses can be used when there are higher degrees of astigmatism needing correction.
More information is found on the offical website or by contacting 20-20 vision perfection.
Posterior chamber phakic IOLs
A posterior chamber phakic IOL is implanted in the small space between the back surface of the iris and the front surface of the eye's natural lens.
Staar Surgical produce the Visian intraocular collamer lens (ICL).
More information relating to the ICL obtained from the STAAR VISIAN website or by contacting 20-20 vision perfection.
Advantages of Phakic IOLs
There are a number of advantages of phakic IOLs over laser refractive surgery. These include:
Potentially sharper vision than laser vision correction surgery.
- No corneal tissue is removed during the phakic IOL procedure, so there is only very limited risk of dry eye problems caused by damage to delicate nerves in the cornea that are important in maintaining an adequate tear layer on the eye, which is a major problem with laser eye surgery.
- The implantable phakic lenses can be removed or replaced if necessary, unlike laser surgery which is irreversible.
Risks of Phakic IOLs
Likewise there are also risks to this procedure. The main risks come from the fact that the procedure is an internal eye procedure. Routine and careful eye exams are needed to ensure the phakic lens implant does not damage surrounding tissues within the eye.
Possible short-term and long-term complications of phakic IOL surgery include:
- Sudden rise in internal eye pressure (IOP)
- Retinal detachments
- Swelling of the cornea requiring corneal transplantation
If you have been affected by any of the symptoms mentioned above, please don't hesitate to give us a call.
We have a team of experts on stand-by who are ready to take your call at our Manchester (0161 907 2685) Clinic or our Blackpool (01253 308 031) Clinic.