what is it?
2006-12-20 04:32:02 · 12 answers · asked by Anonymous in Health ➔ Diseases & Conditions ➔ Other - Diseases
Full details of astigmatism is given below-
Astigmatism is a problem of visual distortion caused by a misshapen cornea. The cornea acts as a focusing lens for the eye. If the cornea does not have the proper shape, the eye is unable to properly focus an image. Most people have a certain degree of astigmatism. Corrective measures are necessary only in cases where the distortion is severe.
Description
Light rays entering a normal eye come to a point of focus on the retina through a transparent, dome-shaped layer called the cornea. In astigmatism there is unequal curvature of the cornea, and the light rays come to focus at more than one point on the retina. This causes the person to see a blurred or doubled image. Astigmatism is usually present at birth and may increase during childhood as the eye tissue develops. Usually the degree of astigmatism remains fairly constant throughout adulthood.
Causes & Symptoms
It is unknown why some people develop a misshapen cornea. It is possible that astigmatism is an inherited trait. Factors such as stress, continual reading in dim lighting, or excessive close-up work may also contribute to the development of astigmatism. It is sometimes caused by pressure from chalazion, a condition that causes the eyelid to swell; from scars on the cornea; or from keratoconus, a condition that involves swelling of the cornea. The main symptom of astigmatism is blurred or distorted vision. There may also be a history of headaches, eye strain, fatigue, and double vision.
Diagnosis
The standard eye examination with a refraction test, given by an optometrist or opthalmologist, is used to determine the presence of astigmatism. An instrument called a keratometer is used to measure the cornea and calculate the shape of the required corrective lens.
Treatment
The Bates method or other type of visual training may be helpful in improving vision and reducing symptoms. The homeopathic remedies Ruta graveolens (from common rue) and Apis mellifica (from the honey bee) can be used to relieve eyestrain, one of the main symptoms and possible contributors to astigmatism.
Acupuncture treatment or Traditional Chinese Medicine may help, as the liver system is connected to eye functions. Certain treatments can strengthen and correct the skewing of the Liver qi. (Qi is the flow of energy in the body. It is sometimes associated with certain organs.)-
2006-12-20 04:44:14 · answer #1 · answered by Anonymous · 0⤊ 0⤋
An Astigmatism is when your actual eyeball isn't shaped the right way. A normal eyeball should be round. A person with an Astigmatism has an eye that is more oblong, like a football. Hope I helped. :)
2016-03-13 08:55:55 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Stigmatism is caused when your cornea is not sperical, mishaped or damaged. Most contact wearers develop some for of astigmatism. But there are many ways to help. Talk to your eye doctor.
2006-12-20 04:36:46 · answer #3 · answered by Evelyn R 2 · 0⤊ 0⤋
Astigmatism is a vision condition that occurs when the front surface of your eye, the cornea, is slightly irregular in shape. This irregular shape prevents light from focusing properly on the back of your eye, the retina. As a result, your vision may be blurred at all distances
2006-12-20 04:36:01 · answer #4 · answered by prbabe1021 2 · 2⤊ 0⤋
It is when your eyeball isn't perfectly round. If you have astigmatism your eye has a flat spot on it and it may blur your vision. It's not deadly and it doesn't mean your weird if you have it. It can be corrected by wearing glasses or contacts.
2006-12-20 04:35:56 · answer #5 · answered by Anonymous · 1⤊ 0⤋
A visual defect in which the unequal curvature of one or more refractive surfaces of the eye, usually the cornea, prevents light rays from focusing clearly at one point on the retina, resulting in blurred vision.
2006-12-20 04:37:58 · answer #6 · answered by 2D 7 · 1⤊ 0⤋
1
2016-06-19 16:57:41 · answer #7 · answered by ? 3 · 0⤊ 0⤋
Actually it is the non roundness of the inner eye, and can cause difficulty focusing. Most people have it to some degree, (nobody is perfect) when it is bad, prescription glasses are required.
2006-12-20 04:35:55 · answer #8 · answered by Michael C 3 · 0⤊ 0⤋
It pertains to your eyes. Having difficulty seeing fine details.
2006-12-20 04:35:23 · answer #9 · answered by kja63 7 · 0⤊ 0⤋
It makes your eyesight seem like everything is shaped like the #8. The iris does not open all the way. Mostly leads to blindness. I have them and they suck
2006-12-20 04:35:38 · answer #10 · answered by Collared 4 · 0⤊ 1⤋