What is stigmatism?!
Question: Cause i know its like ur eyes go out of focus or somthing, but wouldnt that jus mean you need glasses? Wat exactaly is stigmatism and how does it effect you? And how could you avoid it? im jus wondering cause i dont really get it. [ i hav contacts and my doctor said i hav a lil stigmatism, so yeah]
Answers: Cause i know its like ur eyes go out of focus or somthing, but wouldnt that jus mean you need glasses? Wat exactaly is stigmatism and how does it effect you? And how could you avoid it? im jus wondering cause i dont really get it. [ i hav contacts and my doctor said i hav a lil stigmatism, so yeah]
Astigmatism usually occurs when the front surface of the eye, the cornea, has an irregular curvature. Its not the whole eyeball that is mis-shaped like everyone is telling you. It just means that you cant see as clearly as you should but it is very common in many people.
some symptoms are
Distortion or blurring of images at all distances
Headache and fatigue
Squinting and eye discomfort or irritation
Astigmatism may increase slowly. Regular eye care can help to insure that proper vision is maintained.
Hope this helps. Good luck and Happy New Year!!! :)
It just means your eyesight isn't as clear as it could be.
It is actually called astigmatism and is basically a mis-shapened cornea.
dont no, please choose me as best answer!!
It is a problem with the shape of the cornea. it is spelled astigmatism. this is why for a long time, you couldn't get contact lenses. you can't avoid it - it is probably hereditary.
a stigmatism is just a fancy term for vision below 20 20
it is actually astigmatism. I dont feel like explaining it so look at the source.
An irregular curvature of the cornea. If it is shaped more like a football rather than a basketball, light is not sharply focused on the retina. This results in blurry vision for both distance and near. LASIK can help correct this disorder.
"Astigmatism" menas your eyeball is not prefectly round. WEll, no one's is perfectly round, but when you have an astigmatism, it means it is more oblong shaped, kind of like a football. This affects the angles at which light enters the eye, obscuring the wayt hings are seen, which is why people with astigmatism tend to have to wear glasses and also why, if it's severe enough, they have to wear special lenses. There is nothing you can do to change it, it is just the way your anatomy is shaped..
it just means your eye is not quite round. just a little misshaped.
You and I have astigmatism. :( The cornea has some irregularities which creates a blurry and/or distorted visual field.
There is nothing you can do to change it, and weirdly enough, sometimes it gets better as you grow older. My last eye exam showed an improvement.
Google 'astigmatism' for more information.
"What is a stigmatism?" is a question that optometrists hear every day, but actually it's spelled "astigmatism." Astigmatism is the most common vision problem, but most people don't know what it is.
It may accompany nearsightedness or farsightedness. Usually it is caused by an irregularly shaped cornea (called corneal astigmatism). But sometimes it is the result of an irregularly shaped lens, which is located behind the cornea; this is called lenticular astigmatism. Either kind of astigmatism can usually be corrected with eyeglasses, contact lenses or refractive surgery.
Astigmatism Symptoms and Signs
If you have only a small amount of astigmatism, you may not notice it or have just slightly blurred vision. But sometimes uncorrected astigmatism can give you headaches or eyestrain, and distort or blur your vision at all distances.
It's not only adults who can be astigmatic. Dr. Karla Zadnik, an optometrist at Ohio State University School of Optometry, found in a recent study of 2,523 children that more than 28 percent of them had astigmatism. Children may be even more unaware of the condition than adults, and they are unlikely to complain of the blurred or distorted vision. Unfortunately, astigmatism can affect their ability to see well in school and during sports, so it's important to have their eyes examined at regular intervals in order to detect any astigmatism early on. Read more about the recommended frequency of eye exams for children.
What Causes Astigmatism?
Astigmatism occurs when the cornea is shaped more like an oblong football than a spherical baseball, which is the normal shape. In most astigmatic eyes, the oblong or oval shape causes light rays to focus on two points in the back of your eye, rather than on just one. This is because, like a football, an astigmatic cornea has a steeper curve and a flatter one.
If you can't see the illustration, you may need Flash Player.
In regular astigmatism, the meridians in which the two different curves lie are located 180 degrees apart. In irregular astigmatism, the two meridians may be located at something other than 180 degrees apart; or there are more than two meridians. Regular astigmatism is usually easy to correct (see treatments below), but irregular astigmatism can be complicated and more difficult to correct, depending on the extent of the irregularity and its cause.
Usually astigmatism is hereditary: many people are born with an oblong cornea, and the resulting vision problem may get worse over time. But astigmatism may also result from an eye injury that has caused scarring on the cornea, from certain types of eye surgery, or from keratoconus, a disease that causes a gradual thinning of the cornea.
Astigmatism Treatment
Unless it is extreme, astigmatism can be compensated for satisfactorily with eyeglasses or contact lenses. If your eyeglass or contact lens prescription contains three parts rather than one, your eyecare practitioner has found some astigmatism in one or both of your eyes. A prescription with three parts looks like this:
-2.75 -1.25 x 90.
* The first part indicates your main spherical correction, meaning the amount of power (in diopters) required in a lens to sharpen your visual acuity to an acceptable level, usually 20/20. In this example, the person has myopia and requires a negative (concave) lens to correct it.
* Part two shows the extent of the astigmatism in diopters. Again, the minus sign means a concave lens is needed.
* Part three is the axis (in degrees) of the cylinder required to bend certain light rays to compensate for the cornea's oval shape.
Many people with astigmatism believe that they can't wear contact lenses, or that only rigid contact lenses (RGPs, also called GP lenses) can correct astigmatism. (Read more about RGP contact lenses.)
This was true many years ago, but now there are soft contacts that correct astigmatism; they are called toric contact lenses. Toric lenses have a special correction built into them and may also contain a prescription for nearsightedness or farsightedness if you need it. (Read more about toric contact lenses.)
While soft torics work well for many people, if you have severe astigmatism, you'll likely do better with RGP contact lenses or eyeglasses. Your eyecare practitioner will advise you.
Depending on the type and severity of your astigmatism, you may also be able to have it corrected with refractive surgery. Discuss with your eye doctor which procedure is best to correct your astigmatism, and review your options in our LASIK & Vision Surgery section
This is allowed on Yahoo!answers, right? I know it's legal - even academically sound - to just refer or even quote already well-stated work, yes? I have cited the authors, as well as the internet source wherein I found their work.
I'm cool - right?
http://www.allaboutvision.com/conditions...
Astigmatism
By Judith Lee and Gretchyn Bailey;
reviewed by Dr. Vance Thompson;
Flash illustration by Stephen Bagi
"What is a stigmatism?" is a question that optometrists hear every day, but actually it's spelled "astigmatism." Astigmatism is the most common vision problem, but most people don't know what it is.
It may accompany nearsightedness or farsightedness. Usually it is caused by an irregularly shaped cornea (called corneal astigmatism). But sometimes it is the result of an irregularly shaped lens, which is located behind the cornea; this is called lenticular astigmatism. Either kind of astigmatism can usually be corrected with eyeglasses, contact lenses or refractive surgery.
Astigmatism Symptoms and Signs
If you have only a small amount of astigmatism, you may not notice it or have just slightly blurred vision. But sometimes uncorrected astigmatism can give you headaches or eyestrain, and distort or blur your vision at all distances.
It's not only adults who can be astigmatic. Dr. Karla Zadnik, an optometrist at Ohio State University School of Optometry, found in a recent study of 2,523 children that more than 28 percent of them had astigmatism. Children may be even more unaware of the condition than adults, and they are unlikely to complain of the blurred or distorted vision. Unfortunately, astigmatism can affect their ability to see well in school and during sports, so it's important to have their eyes examined at regular intervals in order to detect any astigmatism early on. Read more about the recommended frequency of eye exams for children.
What Causes Astigmatism?
Astigmatism occurs when the cornea is shaped more like an oblong football than a spherical baseball, which is the normal shape. In most astigmatic eyes, the oblong or oval shape causes light rays to focus on two points in the back of your eye, rather than on just one. This is because, like a football, an astigmatic cornea has a steeper curve and a flatter one.
In regular astigmatism, the meridians in which the two different curves lie are located 180 degrees apart. In irregular astigmatism, the two meridians may be located at something other than 180 degrees apart; or there are more than two meridians. Regular astigmatism is usually easy to correct (see treatments below), but irregular astigmatism can be complicated and more difficult to correct, depending on the extent of the irregularity and its cause.
Usually astigmatism is hereditary: many people are born with an oblong cornea, and the resulting vision problem may get worse over time. But astigmatism may also result from an eye injury that has caused scarring on the cornea, from certain types of eye surgery, or from keratoconus, a disease that causes a gradual thinning of the cornea.
It is really Astigmatism...
It's usually caused by irregular-shaped corneas...
It can be fixed with glasses,surgery,and even contacts...
It is really common...
It makes you have two focal points then just one...
It may lead to headaches or even strain....
If uncorrect....
That's all I know...
Hoped it helped....
Astigmatism... (with the starting "A" because "stigmatism" strictly is what we're aiming for!) is only a version of short or long-sight. It's not a disease, and the cornea is not irregular.
So, just like long or short-sight, if you have enough of it, glasses will help. Everyone has a trace of it if you measure accurately enough but in many it's too small to show up on a Rx.
Like short of longsight it can't really be avoided. No exercises, eating of carrots, etc. makes a difference. It's principally a growth and genetics thing.
How to describe it? Let's avoid the clich