Contact lenses for keratoconus

Keratoconus is a bilateral corneal ectasia that causes progressive non-inflammatory corneal thinning. The beginning is usually in adolescence and can progress to adulthood.

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At first, with glasses you can get a good vision, but as you move on, contact lenses have to be adjusted.

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In mild cases, with soft contact lenses, but, thicker, it  can be achieved a successful adaptation.

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Most normal, however, is to adapt gas permeable rigid contact lenses. The main reason is that the cornea is pumped, it loses symmetry and the result is a distorted vision, usually with high myopia and astigmatism. Rigid contact lenses restore symmetry because between back surface of the lens and the cornea it is filled with tears.

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Until recently, they were very small lenses because of the lower pumping, they were quite difficult to adapt. Today, large-diameter semi-scleral and scleral contact lenses can be adapted. The main advantage is superior comfort