A Guide to Laser Vision Correction
Dr. Robert Maloney believes that a well-informed patient is key to successful vision correction surgery. He wants to be sure that you fully understand what you can expect from your procedure you choose.
He wants to help you care for and preserve your eyesight in the best way possible. Here, you can find the information that you need to help you make informed choices about health care for your eyes.
Other Vision Correction Procedures
If it turns out that you are not a good candidate for LASIK or PRK, you and your eye doctor may wish to consider other surgical options. One of the procedures described here may be appropriate.
Intacs Corneal Ring Segments
Insertion of Intacs corneal ring segments was formerly offered to patients with mild myopia and minimal astigmatism as another option for correcting their nearsightedness. Small, thin arcs of plastic are inserted into the peripheral part of the cornea. Each arc looks like a half circle. These ring segments reshape the eye, correcting mild levels of nearsightedness. Intacs corneal ring segments are no longer used to correct myopia, because the results are less accurate than LASIK and the ring segments cannot correct astigmatism. Today, the ring segments are primarily used to treat keratoconus and ectasia.
Astigmatic keratotomy (AK) corrects only astigmatism. Usually, one or two incisions are made in the peripheral cornea to make it rounder (as if loosening the laces on a football). This procedure has a long track record but is rarely used today by itself, because it is significantly less accurate than PRK and LASIK for correcting astigmatism.
The most frequent use of AK today is for the correction of astigmatism at the time of lens implant surgery (either cataract or refractive lens exchange surgery). AK also goes by the name "relaxing incisions."
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