alexa Astigmatism | Hong Kong| PDF | PPT| Case Reports | Symptoms | Treatment

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  • Astigmatism

    Astigmatism is a natural and commonly occurring cause of blurred or distorted vision that is usually associated with an imperfectly shaped cornea. It is a common eye condition that's usually corrected by eyeglasses, contact lenses, or surgery. Astigmatism is caused by an eye that is not completely round and occurs in nearly everybody to some degree.

  • Astigmatism

    The eye of a person with astigmatism is shaped more like a football or the back of a spoon. For Astigmatism person, when light enters the eye it is refracted more in one direction than the other, allowing only part of the object to be in focus at one time. Objects at any distance can appear blurry and wavy. Astigmatism is usually associated with an imperfectly shaped cornea. The exact cause in not known.

  • Astigmatism

    The possible treatments for Astigmatism are glasses, contact lenses, and even vision correction procedures. The presence of astigmatism, and particularly with increasing astigmatism, appears to predispose to progressive myopia. The occurrence of astigmatism has been documented in 8% to 10% of adults. In infants, studies have reported prevalence rates as high as 70% for astigmatism of more than 1 dioptre.Astigmatism was three times more common in children older than 5.5 years.

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