We’ve all heard about it but what is astigmatism? There seems to be a lot of mystery around astigmatism and sometimes it is looked at as something unexpected or worrisome. In this article we’ll try to give a simple explanation of what it is and how it’s corrected in glasses.
First lets figure out what astigmatism really is. Astigmatism as explained by the American Optometric Association is:
” The curvature of the cornea and lens bends the light entering the eye in order to focus it precisely on the retina at the back of the eye. In astigmatism, the surface of the cornea or lens has a somewhat different curvature.
the surface of the cornea is shaped more like a football instead of round like a basketball, the eye is unable to focus light rays to a single point. Vision becomes out of focus at any distance.
In addition, the curvature of the lens inside the eye can change, resulting in an increase or decrease in astigmatism. This change frequently occurs in adulthood and can precede the development of naturally occurring cataracts.
Sometimes astigmatism may develop following an eye injury or eye surgery.”
Astigmatism can be found by an optometrist during an eye exam. Through the use of refraction the state of the eyes can be determined and astigmatism can be diagnosed. With properly made and properly prescribed eyeglasses your vision can be improved, lenses with a cylindrical correction compensates for the astigmatism by providing additional powers in specific areas of the lenses.
Astigmatism is nothing to be concerned about and now with this small amount of information you know what it is and how it is compensated for. For all you eyewear needs come to Schmidt’s optical and Hearing™ in Stuart, FL and look at our massive selection of frames and get expert service from one of our four Licensed Opticians.