The Femto-LASIK procedure

Keratoconus treatment with cross-linking technique (CXL)

27 October 2014 | KERATOCONUS | Цитата

Corneal collagen cross-linking is a technique which uses UV light and a photosensitizer to strengthen chemical bonds in the cornea. The goal of the treatment is to halt progressive and irregular changes in corneal shape known as ectasia. These ectatic changes are typically marked by corneal thinning and an increase in the anterior and/or posterior curvatures of the cornea. All these usually lead to high levels of myopia and astigmatism. The most common form of ectasia is keratoconus and less often ectasia is seen after laser vision correction such as LASIK.
What is keratoconus?
Keratoconus is a disease that is very common especially for Armenians, but not only.. In this condition, the cornea becomes weak, progressively thinner, and irregular in shape which can cause high levels of astigmatism. Instead of a normal, relatively round shape resulting in clear vision, the cornea in keratoconus can become cone shaped. This can interfere with the ability to see clearly. Often keratoconus patients first require glasses, then contact lenses, and, if the condition progresses to a severe level, a corneal transplant may be required. The condition is typically diagnosed during adolescence and early adulthood with a variable rate of progression.
Corneal Crosslinking System
Since 2009 in our Centre advanced technology for cross-linking is performed and results are very impressive and positive. Prior to use of corneal collagen cross-linking 15% of keratoconus patients required a corneal transplant.
During the corneal cross-linking treatment, custom-made riboflavin drops saturate the cornea, which is then activated by ultraviolet light.
The aim of this treatment is to arrest progression of keratoconus, and thereby prevent further deterioration in vision and the need for corneal transplantation. Glasses or contact lenses will still be needed following the cross-linking treatment (although a change in the prescription may be required) but our observations during these years show that in many cases the progression of keratoconus was stopped.
Who is candidate?

• Keratoconus patients between 10 and 35 years of age with or without evidence of progressive disease. Earlier treatment of the disease results in best-uncorrected and best-corrected visual acuity.
• Keratoconus patients over 25 years of age with a history of progression. This may be determined by steeping on topography, an increase in myopia or astigmatism, or a decrease in best-corrected spectacle acuity.
• Keratoconus patients with corneas less than 320 microns, or those who have significant corneal scarring may not be eligible for the procedure. During a comprehensive consultation, the physicians at our Center can help to decide which treatment is best for you.

What’s the difference between a corneal transplant and CXL?
CXL is an in office procedure that does not involve surgical incisions into the eye . It is a relatively non-invasive procedure that is done with vitamin drops and light. Corneal transplants are performed in an operating room, involving incisions into the eye and a lifelong risk of rejection of the corneal tissue.

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