Astigmatism

Astigmatism's disease overview

What is

astigmatism?

  • The light reflected from the refracted object through the cornea and the lens will converge on the retina of the eye. In the retina, the receptor cells will convert light signals into neurological signals and transmit it to the brain through the optic nervous system. The image is created by the brain based on those signals. Points in the retina. Marketing is a disease where those image rays do not converge at a point that converges at many points in the retina, making the image signal change and the image influence. < /Li>

    Causes of Astigmatism's disease

    The cause of astigmatism is mainly due to abnormalities in the shape of the cornea. In normal people, the cornea is shaped at the shape of a spherical shape with a perfect curvature. The cornea of ​​the deformed disorder causes that curvature that causes the convergence of images at many points in the retina (may be in front and back of the retina), which makes the image unclear. , blurred and blurred.

    Symptoms of Astigmatism's disease

    Marketing disorder encountered all ages including babies due to genetics or in adults. Some cases of astigmatism suffer from after eye diseases or after eye surgery.

    Watching TV a lot, reading books in not enough light is not the cause of astigmatism. Dehydration can be combined with other eye diseases such as myopia, vision.

    People at risk for Astigmatism's disease

    Experts recommend preventing and restricting disorder by measures such as:

  • Study and work in a place of light enough. Use lights with appropriate light to protect the eyes. > When there are symptoms, it is necessary to check and treat early to avoid serious and progressive cases. >

    Prevention of Astigmatism's disease

    Common symptoms include:

  • The visible image is blurred, blurred, unknown. The shadow
  • The other signs include: Fast eye strain, watery eyes, headache, neck pain.

    • Diagnostic measures for Astigmatism's disease

    When there are symptoms of eye disease, patients need to see a specialist to be carefully and comprehensive eye examination. Doctors will conduct tests for diagnosis such as:

  • Test vision by vision measurement. Light concentration.

    Astigmatism's disease treatments

    Can a disorder be cured?

    Dehydration is an abnormal disease in corneal shape that causes images that converge at many points in the retina. The goal of treating astigmatism is to adjust the curvature of the cornea back to normal so the treatment is firm. In addition, if the patient has a mild disorder, there will be no treatment. There are currently two main treatments:

  • Treatment with drug glass: Wearing glass will adjust the irregular curvature of the cornea. This is the most common, simple, widely applied and less complications. However, because the glass market is now very diverse, the patient should follow the doctor's advice to choose the most suitable type of glass. , wearing glasses can not be overcome, patients will have to perform surgery to use laser or microsurgical knives to intervene the curvature adjustment of the cornea permanently. Currently, Lasik surgery in the treatment of astigmatism is the most popular method.

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