Astigmatism is an eye condition characterized by a deviation in the curvature of the cornea or lens of the eye. Because some areas of the cornea are steeper or more rounded than others, the eye does not focus light evenly onto the retina. This relatively common refractive error causes blurred near and distance vision just as nearsightedness and farsightedness would.
What Causes Astigmatism?
In most cases, astigmatism is hereditary. You can either be born with astigmatism or can develop this condition over time based on genetics. While astigmatism can usually be attributed to genetics, little is known about why corneal shape differs from person to person.
Astigmatism is not caused by reading in the dark or watching television too closely. But astigmatism vision changes can sometimes be caused by eye disease, injury or surgery.
Can Astigmatism Get Worse Over Time?
Although astigmatism does not worsen in most cases, some factors that could cause it to deteriorate include genetics, age, diet or eye stress. Blurry vision is one of the most common effects of the condition, although there a few other symptoms associated with astigmatism.
- Distorted or blurred vision at close and far ranges
- Difficulty driving, particularly at night
Is Astigmatism Correctable?
Yes, several options are available to treat astigmatism, including glasses, contacts, and surgery for a more permanent astigmatism cure. It is best to discuss your options with your optometrist to assess our lifestyle and how best to have astigmatism treated.
Are Astigmatism Contacts and Glasses More Expensive?
Astigmatism eyeglasses and contacts are one of the simplest and safest ways to correct astigmatism. Typically, astigmatism eyeglasses and contacts do not cost significantly more than regular corrective eyewear. Cost for your astigmatism eyeglasses and contacts will depend on your prescription, insurance and other factors.
Your eye care professional can discuss and recommend appropriate lenses to fit your budget and correct your vision.