ASTIGMATISM

Astigmatism is a vision condition that causes blurred vision due either to the irregular shape of the cornea, the clear front cover of the eye, or sometimes the curvature of the lens inside the eye. An irregular shaped cornea or lens prevents light from focusing properly on the retina, the light sensitive surface at the back of the eye. As a result, vision becomes blurred at any distance. Astigmatism is a very common vision condition. Most people have some degree of astigmatism. Slight amounts of astigmatism usually don’t affect vision and don’t require treatment. However, larger amounts cause distorted or blurred vision, eye discomfort and headaches. Astigmatism frequently occurs with other vision conditions like nearsightedness (myopia) and farsightedness (hyperopia). Together these vision conditions are referred to as refractive errors because they affect how the eyes bend or “refract” light. The specific cause of astigmatism is unknown. It can be hereditary and is usually present from birth. It can change as a child grows and may decrease or worsen over time A comprehensive optometric examination will include testing for astigmatism. Depending on the amount present, eyeglasses or contact lenses will be prescribed to correct the astigmatism by altering the way light enters your eyes.

Hyperopia

Myopia

Myopia or short-sightedness is a condition of the eye where the light that comes in does not directly focus on the retina but in front of it, causing the image that one sees when looking at a distant object to be out of focus, but in focus when looking at a close object. Myopia is corrected with negatively powered lenses. It may also be corrected by refractive surgery, though there are cases of associated side effects.

FAQ’s ¬†MYOPIA

  1. What is myopia?

Myopia is a vision condition in which near objects are generally seen clearly, but distant objects are blurred and do not come into proper focus.

  1. Why does Myopia occur? When your eyeball is too long or the cornea has too much curvature, light entering the eye is not focused properly. Hereditary factors often control the growth and development of the eye. However, some evidence supports the theory that myopia may also be caused by the stress of too much close vision work.
  2. How common is myopia? Myopia is a very common vision condition that affects nearly 30 percent of the American population. It normally first occurs in school age children. Since the eye continues to grow during childhood, nearsightedness generally develops before the individual reaches age 20.
  3. How is myopia diagnosed? Myopic children are usually easy to identify because they often squint or have trouble seeing the chalkboard , the movie screen, the television set or other distant objects. A comprehensive optometric examination will include testing for myopia.
  4. How is myopia treated? Eyeglasses or contact lenses can be prescribed to optically correct myopia and enable you to see more clearly. They alter the way the light images are focused in your eyes, but they do not cure myopia. You may only need them for certain activities, like watching television, going to a movie or driving a car.
  5. How will myopia affect my lifestyle? Most individuals adapt well to wearing glasses or contact lenses. For those individuals who feel glasses affect their image or interfere with their activities, contact lenses may provide options to better meet their lifestyle and vision needs. In some cases, more severely nearsighted individuals may find the condition limits their choice of occupations.