Search This Blog

Astigmatism



Astigmatism is a refractive error of the eye that causes the visual image in one plane to focus at a different distance from that of the plane at right angles. This most often results from too great a curvature of the cornea in one plane of the eye.
Astigmatism is the most common refractive problem responsible for blurry vision. You may also hear astimatism called a refractive error.Most of the eyeball's focusing power occurs along the front surface of the eye, involving the tear film and cornea (the clear 'window' along the front of the eyeball). The ideal cornea has a round surface. Anything other than round contributes to abnormal corneal curvature -- this is astigmatism. Here's a good way to demonstrate the effects of astigmatism. Look at your reflection in the curved surface of a round soup spoon and compare it with your reflection in an oval teaspoon.The cornea is the transparent window over the colored part of the eye. It bends (refracts) light rays and helps focus the light onto the retina in the back of the eye so people can see. When the cornea is oblong shaped, it causes light rays to focus on two different points on the retina, instead of just one. As a result, people with significant astigmatism may have distorted or blurry vision.

Signs and symptoms of astigmatism may include:
  • Distortion in portions of your visual field
  • Blurred vision
  • Eyestrain
  • Headaches



5 comments:

  1. is there really a cure for astigmatism?
    will wearing eye glasses will do any good or correct the defects? see you at my site
    www.josieswindow.info
    www.josieskitchen.info

    ReplyDelete
  2. Yes Cylindrical lenses or by using of convex lens Correction of Astigmatism with a Cylindrical Lens can possible...

    ReplyDelete
  3. Interesting post about Astigmatism, in these days astigmatism is more common and people have to try to be careful with their health, for example I unfortunately spend much money in buying generic viagra only because I need it and well Im close to be a senior citizen.

    ReplyDelete
  4. Wisdom Overseasis authorized India's Exclusive Partner of Southwestern University PHINMA, the Philippines established its strong trust in the minds of all the Indian medical aspirants and their parents. Under the excellent leadership of the founder Director Mr. Thummala Ravikanth, Wisdom meritoriously won the hearts of thousands of future doctors and was praised as the “Top Medical Career Growth Specialists" among Overseas Medical Education Consultants in India.

    Southwestern University PHINMAglobally recognized university in Cebu City, the Philippines facilitating educational service from 1946. With the sole aim of serving the world by providing an accessible, affordable, and high-quality education to all the local and foreign students. SWU PHINMA is undergoing continuous changes and shaping itself as the best leader with major improvements in academics, technology, and infrastructure also in improving the quality of student life.

    ReplyDelete