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About the condition

Kerataconus is a dystrophic disorder where structural changes occur within the cornea causing it to stretch and develop an abnormal thin and cone shape.

Causes of kerataconus

The exact cause of kerataconus is unknown but it is typically diagnosed in adolescent years and is more common for example in people with asthma and allergic eyelid disease where there is excessive rubbing of the eyes, or in inherited disorders such as Down’s syndrome. It can however occur sporadically in otherwise completely healthy individuals.

It is typically diagnosed in the patient’s adolescent years and presents with blurred vision, ocular irritation and the need for increasingly strong glasses or contact lenses to see correctly. If present in both eyes, the deterioration in vision can affect the patient’s ability to drive a car or read normal print.

Symptoms of kerataconus

  • Distorted vision that cannot be corrected with simple glasses.
  • Sensitivity to light or the need to ‘squint’ the eyelids closed to see clear detail.
  • Inability to have vision corrected with simple soft contact lenses, in some cases vision can only be corrected with rigid gas permeable contact lenses.
  • If present in both eyes, the deterioration in vision can affect the patient’s ability to drive a car or read normal print

Find out how you can treat kerataconus by visiting our treatment page.