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Phakic Implant Lenses Phakic implantable lenses are used to correct very high amounts of short-sightedness and long-sightedness, which are generally not suitable for treatment using laser vision correction surgery. The implanted lenses are made from a flexible plastic material, they are very tiny, and are placed permanently within the eye to correct the blurred vision caused by these very high prescriptions. The term 'phakic' means that the implanted lens is used in addition to the natural lens inside the eye, rather than replacing it.One or two weeks before the surgery, the patient comes to the Vision Eye Institute for a simple procedure called laser iridotomy - the surgeon creates two or three small openings at the periphery of the iris, the coloured part of the eye. These openings help ensure that the placement of the lens will not cause blockage of fluid that flows through the chambers of the eye. The actual lens implantation is a fairly straightforward procedure. The patient sits in a surgical chair which is reclined to a horizontal position. Topical anaesthetic eyedrops drops are used to 'numb' the eye for a painless correction, and the patient's face around the eye is carefully draped to ensure a perfectly clean surrounding area. To begin, the surgeon makes a small incision of about 3mm at the edge of the cornea or the white sclera, and then inserts an open or folded implantable lens, carefully positioning it behind the cornea and in front of the eye's natural internal lens. The implanted lens, which has been selected with a specified focal power, becomes the eye's extra lens. The small incision surgery is usually completed without stitches, since the incision is designed to be self-sealing. The whole procedure takes approximately 20 minutes. Patients are able to go home after the surgery. The implanted lens cannot be felt inside the eye. Visual recovery, in most cases, is rapid. The day after surgery, patients are generally able to see well enough to resume normal activities, with dramatically increased visual freedom. Full visual recovery may take a few days. Patients can expect increased light sensitivity for a few days, so sunglasses need to be worn more often. Occasional check-up visits are required. Implanted lenses can achieve dramatic results. However, like any surgical procedure, there are risks, particularly when the surgery involves the delicate tissues inside the eye. A comprehensive assessment consultation is required to determine the suitability of this type of surgery for a particular patient, as well as to discuss the risks and potential complications from implantable lens surgery. |