Keratoconus is a variation of the conical cornea caused by an alternation of the internal structure of the corneal tissue. Besides being a condition that changes the appearance of the eye, causing poor vision, as it is usually accompanied by a high astigmatism, blurred or distorted vision. Alteration of collagen fibers contained within the cornea is responsible for the evolution of keratoconus, to which various treatments. On the one hand, it can be corrected with glasses or contact lenses, but it is also possible to implement intracorneal rings, using a very safe surgical procedure that changes the corneal curvature. Another of the most used is the crosslinking treatment, a technique of applying rivoflavina- substance that sensitizes the collagen-and prevents the increase of keratoconus. Finally, for the more severe stages of the disease, the only solution is corneal transplantation.

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