Causes And Risk Factors For Keratoconus

The exact cause of keratoconus is not yet known, but it is thought to be a mixture of genetic and environmental factors. 

There are a number of factors which increase your risk of developing keratoconus:


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If there is a history of keratoconus in your family, you are at greater risk of developing the condition yourself. Approximately 1 in 10 people with keratoconus have a parent with the condition.

Other conditions

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People with certain conditions, including Down syndrome, retinitis pigmentosa, Ehlers-Danlos syndrome, Marfan syndrome, hay fever and asthma, are more likely to develop keratoconus.

Eye rubbing

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Excessive eye rubbing is associated with the development of keratoconus. As such, people with other conditions which cause itchy eyes (like hay fever or allergies) are more likely to develop the condition

Chronic eye inflammation

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Constant inflammation of the eyes (which can be brought about by allergies or irritants) can increase your risk of developing keratoconus.

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