Astigmatism is a common vision problem caused by an error in the cornea. It is a type of refractive error caused when either your cornea or lens has mismatched curves.

This causes blurry, fuzzy, or distorted vision. 


There are two main types; corneal and lenticular. Corneal astigmatism occurs when your cornea has mismatched curves. Lenticular astigmatism is a result of a difference in curvature in the lens.

What causes Astigmatism?

There is no known cause, but genetics is a significant factor. It is often present at birth, but it may develop later in life.

It may also occur as a result of an injury to the eye or after eye surgery. Also, this disease often occurs with nearsightedness or farsightedness. 

Astigmatism is a disease that affects both children and adults. However, the risk of developing it may be higher if you have any of the following: 

  • A family history of astigmatism or other eye disorder such as Keratoconus
  • Scarring or thinning of your cornea
  • Excessive nearsightedness creates blurry at a distance
  • Extreme farsightedness makes blurry close-up vision
  • A history of certain types of eye surgery such as Cataract surgery


The symptoms of astigmatism may differ in each person. Some people might not show any symptoms at all. These symptoms include: 

  • Blurry, distorted, or fuzzy vision at all distances( up, close and far away)
  • Difficulty seeing at night
  • Eyestrain
  • Squinting
  • Eye irritation
  • Headaches

 See a doctor if you notice any symptoms. Some signs may also be due to other health or vision problems.

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