EYE DISEASES  
ASTIGMATISM
 

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Astigmatism
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Astigmatism, like nearsightedness and farsightedness, is a refractive error, a problem with how the eye focuses light. In an astigmatic eye, light fails to come to a single focus on the retina to produce clear vision. Instead, multiple focus points occur, either in front of or behind the retina (or both).

Causes
Astigmatism is often hereditary and present at birth. It can also result from eyelid pressure on the cornea, incorrect posture or an increased use of the eyes for close work.

Common symptoms

  • Blurred or distorted vision
  • Eye strain and headaches, especially after reading or other prolonged visual tasks
  • Squinting

Treatment
Properly prescribed glasses or contact lenses are essential. For people with only a slight degree of astigmatism, corrective lenses may not be needed at all, as long as they are neither nearsighted nor farsighted. For moderate to high astigmatism, however, corrective lenses are needed.

Refractive surgery or LASIK also corrects astigmatism. Here the shape of the cornea is changed through refractive or laser eye surgery. Refractive surgeries require healthy eyes, free from retinal problems, corneal scars and any eye disease. are recommended on an individual basis. Explore and understand the different types of refractive surgery and treatment before deciding one is right for you.