According to the American Optometric Association, astigmatism occurs when your cornea or lens becomes more oval than round, making it difficult for light to focus correctly on your retina. Our knowledgeable optometrists at Classic Vision Care, Mital Patel, OD, Mark Machen, OD, and Ashley Swalla, OD, diagnose your astigmatism and fit you for the right lenses at our offices in Kennesaw and Marietta, Georgia.
Causes and symptoms of astigmatism
Astigmatism occurs when the curve of your cornea or lens differ from each other, causing your eyesight to become blurry. It may be present from birth, occur later in life, or result from an eye injury.
Symptoms of astigmatism vary from person to person. Some people are even asymptomatic. Others may experience:
- Eye irritation
- Blurry vision
- Distorted vision
- Eyestrain
- Headaches
Our knowledgeable optometrists discuss your current symptoms and perform a comprehensive exam to diagnose your condition.
Diagnosing astigmatism
Dr. Patel and our team pinpoint astigmatism through a variety of tests. These may include:
Refraction
Using a lighted instrument known as a retinoscope, we place various lenses in front of your eyes to measure how they view light.
Keratometry
We measure the curvature of your cornea via a keratometer, an instrument that judges your degree of astigmatism, and/or corneal topography, which produces a detailed map of your eye’s surface.
Visual acuity
We decipher visual acuity by testing how far you can see. For instance, 20/40 means you can read a letter clearly at 20 feet that should be seen at 40. Normal acuity is 20/20.
Correcting astigmatism
We resolve many cases of astigmatism via glasses or special soft contacts, known as toric lenses. Our optometrists may also suggest orthokeratology, which uses gas-permeable rigid contact lenses to temporarily reshape your cornea while you sleep. For more serious cases, we recommend refractive surgery with a qualified ophthalmologist.
Surgical options include:
Laser-assisted in-situ keratomileusis (LASIK). The surgeon creates a hinged flap within the cornea to resculpt its shape.
Photorefractive keratectomy (PRK). The surgeon removes the protective cover, called the epithelium, so it grows back in the correct shape.
Laser-assisted subepithelial keratectomy (LASEK). Loosening this protective layer, the surgeon uses alcohol to reposition the epithelium.
Implantable contacts. The surgeon implants contacts made from biocompatible material between your native lens and iris to improve your vision.
Although we cannot prevent astigmatism, our knowledgeable optometrists often correct your vision without surgery. If you have any issues with your vision or simply wish to schedule a routine exam, contact our talented team at Classic Vision Care. Call us or book an appointment online today.
You Might Also Enjoy…
Is Squinting Bad for Your Eyes?
If you find yourself squinting throughout the day in order to see better, it may be a sign you need glasses. Is continuous squinting bad for your eyes? See how you can correct your vision without squinting.
Millions of people suffer from dry eyes in the United States alone. Discover five common symptoms and how to prevent and treat this uncomfortable condition to avoid further complications.
Are Glasses Better than Contacts?
Trying to decide between wearing eyeglasses or contact lenses? Consider all the factors, including comfort, ease, and appearance. We’ve compiled a list of pros and cons to help you see your way through this significant decision.
Why Sunglasses are Important All Year Long
No doubt you always have your favorite shades close by all summer. But sunglasses protect your eyes all year long, even during darker winter months. Learn how they shield your eyes from harmful ultraviolet (UV) rays any time of year.
Who Is at Risk for Glaucoma?
Could you be at risk for glaucoma? The short answer is that everyone, especially seniors, is at risk for glaucoma. Learn how to lessen your odds of losing your sight through early detection and treatment.
5 Steps to Prevent Diabetic Eye Disease
People with diabetes are more vulnerable to certain eye diseases, such as glaucoma, cataracts, and diabetic retinopathy. Learn what steps you can take to slow their progression and potentially avoid them in the first place.