Corneal cross linking



Corneal collagen cross-linking (CXL) is a technique that is used to treat patients with a disease called keratoconus. Keratoconus is a disease when 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. 

Corneal Collagen Cross-Linking is a non-invasive corneal treatment shown to slow or halt the progression of keratoconus.  The procedure involves treating the eyes with riboflavin—vitamin B2—drops, and then exposing the cornea to 15-30 minutes of UV-A light. When combined with the riboflavin, it causes a reaction that increases the collagen bonds in the cornea which have been weakened by keratoconus. 
As with most conditions, prevention of a problem is better than treatment of a problem. The best time to treat keratoconus is before astigmatism has become severe and vision has been lost. Undergoing CXL in the early stages may help stabilize vision. While the treatment will not correct vision or eliminate the need for glasses and/or contact lenses , it can help maintain the current level of vision and is meant to prevent vision from worsening. It can also help those that cannot wear contact lenses to more easily fit into them.


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