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Keraring corneal ring implants are suitable for people who have keratoconus. Keratoconus leads to increased bulging of the cornea together with increasing levels of astigmatism and decreasing vision. Kerarings work by changing the shape of the cornea to a more optimal shape.
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Keraring intrastromal corneal ring segments are implantable precision devices used to correct corneal shape irregularity, and reduce astigmatism associated with keratoconus. This leads to improved vision. The procedure is reversible.
Unlike other intracorneal rings such as Intacs, the Keraring was specifically designed to treat keratoconus, providing better and greater corneal surface regularization and optical correction.
Keratoconus is a progressive condition that leads to increased bulging of part of the cornea together with increasing levels of astigmatism and decreasing vision. Most patients with keratoconus find that their vision is better with a rigid contact lens rather than with glasses. Some patients can’t tolerate contact lenses or may prefer not to wear them and one alternative is the implantation of a Keraring into the cornea. Kerarings work by changing the shape of the cornea to a more optimal shape.
Keraring surgery is performed using the Zeimer Z8 femtosecond laser which makes small curved channels at a precise depth within the cornea. The rings are then positioned within the cornea to change it to a more optimal shape. The rings subtly alter the shape of the cornea to optimise its shape for better image focus.
This can result in better un-aided vision and better vision with glasses in up to 2 out of 3 patients. In 1 of 3 patients, Kerarings may not be helpful but are fully reversible. Kerarings may be combined with corneal collagen cross-linking or with an implantable contact lens/ to allow the patient to see without glasses or contact lenses. This is often performed as a staged process.
Kerarings aren’t suitable for everyone and you should consult a corneal expert, such as our surgeons at OCL, for the best treatment for your eyes.
I was nervous on the day of surgery, but Mr Barsam helped this by talking through clearly all the steps I would experience during the surgery and how long each sensation would last. His explanation and calming nature helped me remain settled and focused during the procedures.