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What is Keratoconus?

An eye that has developed keratoconus has a cornea that is shaped a little like the pointed end of a rugby ball. When light passes through this shape of lens the image is distorted and blurred so that spectacles may not give clear and comfortable vision. Often, contact lenses will give very satisfactory visual acuity or a surgical technique called corneal cross-linking (CXL) may be appropriate. Corneal graft surgery is becoming rarer. Development of keratoconus may be more likely in atopy – people who suffer some allergies, asthma or eczema – and seems to be associated with persistent eye-rubbing. It also seems to occur in some races more than others and can run in families.


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