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Eye Matters
December 23, 2009

Refractive lens implant surgery

LAST WEEK we discussed Laser refractive surgical techniques such as PRK, Lasik and Lasek to correct Myopia (nearsightedness), Hyperopia (farsightedness) and Astigmatism. Even though these procedures have proven themselves to be very effective on patients who need only mild to moderate corrections, they have not done extremely well on patients with very high refractive errors.



Newer techniques using special lens implants can improve vision and practically eliminate or at least reduce the need for glasses in patients who require moderate to high corrections for Myopia and Hyperopia. PRK, Lasik and Lasek alter the shape of the eye. Refractive Lens Implant surgery on the other hand utilizes materials and techniques similar to those used for cataract surgery.



Either a Lens is implanted in front of the patient’s natural lens (phakic lens implant)

or the natural lens is removed like in cataract surgery and replaced with a clear artificial lens ( Clear Lens Replacement) .























The doctor does a thorough examination to determine if surgery is a viable option. Patients with certain eye diseases may not be good candidates for Refractive Lens Implant Surgery.



Phakic Intraocular lens Implant (Phakic IOL)

In this procedure the natural lens is left in place and the lens implant is inserted into the eye in front of the patient’s natural lens. The implant can be placed either in the anterior chamber or posterior chamber of the eye. Because the natural lens is not removed the eyes natural ability to change focus between distant and near vision is retained.



Clear Lens Replacement (CLR)

In the phakic IOL procedure, the natural lens is not removed. With CLR it is removed and an artificial lens (usually multifocal ) is implanted in the eye. This procedure is usually recommended for people who wear bifocals or progressive lenses as these are the people who have lost the natural ability to change focus between distant and near objects.



That it for this week folks….Wishing you a Blessed and Merry Christmas. n Dr Kenneth Onu is a resident Consultant Ophthalmologist at the Beachmont Eye Institute/Eyes R Us Send questions to: Beachmont@gmail.com

Tel: 784 456-1210

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