Symptoms of Keratoconus

Keratoconus often begins to develop in the teen years to the early 20s, although it can develop at any age, including people in their 50s and 60s. Changes in your cornea’s shape occur gradually, usually over several years, but sometimes may deteriorate rapidly.  In most patients with keratoconus, both eyes eventually become affected.  Keratoconus typically affects one eye before the other which explains why one of your eyes is typically more advanced than your other eye.

Keratoconus can be difficult to detect in the beginning stages and if you were told in the beginning, “you just have astigmatism” than you are not alone.    Your keratoconus will readily show up on a cornea topography map (the red and yellow colors correspond to more steep areas). 

Symptoms of keratoconus may include:

  • Distorted and blurred vision
  • Myopia (nearsightedness)
  • Astigmatism
  • Double vision
  • Headaches due to eye strain
  • Glare
  • Light sensitivity
  • Loss of ability to lead a normal life

You might be experiencing difficulties at night.  Because the light entering your cornea is not being focuses properly, this effect gets worse at night time with streaking off of lights in multiple directions, glare and halos from lights such as car tail lights, and double or triple vision.   Some people even avoid going out at night because of these distortions.




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