Astigmatism makes objects at any distance appear blurry and wavy, says WebMD. This occurs due to an eye that is not completely round, which creates a type of refractive error.Continue Reading
WebMD explains that astigmatism is a natural and common eye condition that causes blurred or distorted vision. The natural shape of the eye is like a sphere. Normally, when light enters the eye, it refracts evenly and produces a clear view of an object. However, a person with astigmatism has an eye shaped like a football or the back of a spoon. In this case, light is refracted more in one direction than the other, causing only part of an object to be in focus at a time. Thus, objects look blurry and wavy at a distance. Astigmatism happens in almost everybody to some degree. The main symptom of astigmatism is blurred vision, which is often associated with eyestrain and fatigue. It also sometimes occurs with other vision problems, such as farsightedness and nearsightedness.
Astigmatism is easily corrected by eyeglasses, contact lenses or vision correction procedures, states WebMD. Corrective lenses are typically recommended for people with moderate to high astigmatism. Another possible treatment is refractive surgery, a method that corrects astigmatism by altering the cornea’s shape through refractive or laser eye surgery.Learn more about Vision
One problem that may occur with monovision is hampered visual clarity for both distance and near vision. Some patients with monovision also complain about reduced depth perception, states AllAboutVision.Full Answer >
A Snellen eye chart assesses distance vision, according to WebMD. It consists of several rows of letters printed on a white card. The letters on the top row are the largest; the letters become smaller on each succeeding line.Full Answer >
Astigmatism may be the result of an eye injury, disease or surgery, according to Mayo Clinic. Some people may have astigmatism present at birth. Despite speculation, squinting, reading in dim light or sitting too close to a television screen do not cause or worsen astigmatism.Full Answer >
Surgical procedures can correct blurred vision; the appropriate surgical procedure depends on the cause of the blurry vision. Some causes of blurry vision that surgery can address include cataracts, glaucoma, and refractive errors such as nearsightedness, farsightedness, astigmatism and presbyopia.Full Answer >