What is Keratoconous?

Keratoconus (pronounced keh-rah-toe-cone-us) affects your cornea, the clear dome-shaped window at the front of your eye which focuses light into your eye to help produce a clear image. In keratoconus your cornea becomes weaker and thinner at its centre. This thinning causes it to bulge outwards in an irregular cone shape. This can make your vision blurry and distorted, as light being focused by your cornea forms an unclear image on your retina, at the back of your eye.

Keratoconus usually develops in someone's teens or 20s and can worsen over time. It cannot be treated with eye drops, but most people can still get a good level of vision by wearing contact lenses. Some treatments are also becoming available which can prevent sight being more affected or try to improve the shape of the cornea to give a better level of vision.

For some people keratoconus can continue to worsen to a stage where contact lenses no longer give clear vision. If this happens, it is possible to have a corneal transplant, which can improve sight to a good level again.

For more information please see our factsheet on keratoconus:

We also have a factsheet on corneal transplants:

For further information and advice please about keratoconus, corneal transplants and other eye conditions please contact our Helpline on:

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