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Get key facts and figures about chronic dry eye



Keratoconus is an eye condition that causes your cornea to become thinned and raised. The cornea is the clear surface of your eye. You may have vision loss in one or both eyes. Keratoconus occurs most often in adolescents and adults 20 or older. The cause of your keratoconus may not be known.


Return to the emergency department if:

  • You suddenly lose your vision.
  • You have sudden vision changes such as blurred vision, double vision, or seeing halos around lights.
  • You develop sudden, sharp eye pain.

Contact your healthcare provider if:

  • You have a fever.
  • You have questions or concerns about your condition or care.

Follow up with your healthcare provider as directed:

Write down your questions so you remember to ask them during your visits.

Manage keratoconus:

  • Wear contacts or glasses as directed.
  • Wear sunglasses to protect your eyes from the sun. Too much time in the sun without eye protection may cause your condition to get worse.

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The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.