What Is Astigmatism?

Image of family wearing glasses.

Astigmatism is an extremely common eye condition that affects both children and adults. It occurs when there is an imperfection in some part of your cornea, the clear tissue that covers your iris. Light rays pass through the cornea as they travel to the retina, a thin layer of cells at the back of your eye. The retina turns light rays into impulses that are transmitted to your brain, which interprets them as images.

Normally, the cornea is completely round. If you have astigmatism, some parts of your cornea may be rounder than others, which can cause a distortion in the way light rays focus on your retina. Astigmatism is considered a refractive error because it affects the way your eyes refract, or bend, light. It often occurs in conjunction with other refractive errors, such as nearsightedness or farsightedness.

Symptoms of Astigmatism

Common symptoms of astigmatism include:

  • Blurred or distorted vision
  • Trouble seeing clearly when driving at night
  • Squinting
  • Eyestrain
  • Headaches

If you have a mild case of astigmatism, you may not notice any changes in your vision.

Diagnosing Astigmatism

Many of the symptoms of astigmatism, such as blurred vision and eyestrain, can also occur if you need glasses or you already have glasses or contacts, but your eyes have gotten worse. Luckily, astigmatism can be easily spotted during an eye examination.

During the examination, your visual acuity will be measured based on your ability to read letters or numbers on an eye chart. The focusing power of your eyes will also be determined, and an instrument called a keratometer may be used to measure the curvature of your cornea. These tests help eye care professionals determine if you have astigmatism.

Treating Astigmatism

Eyeglasses will help improve your vision if you have been diagnosed with astigmatism. Although you probably will not be able to notice any difference just by looking at your new glasses, a subtle change in your lenses will allow you to see better. Glasses improve vision in people with astigmatism because the lens power is increased in a small area of a lens to compensate for the imperfection in your cornea. Some people with astigmatism feel that contacts offer better vision than glasses, but either option will help improve your eyesight.

Reshaping the cornea can alleviate astigmatism temporarily or permanently. Special contact lenses that are worn overnight change the shape of the cornea, allowing you to see clearly during the day. However, if you stop wearing the lenses at night, your symptoms will return. Two types of laser surgery, LASIK and photoreactive keratectomy (PRK), permanently reshape the cornea but may have associated risks.

Helping you make the most of your vision is our priority. If it's been awhile since we have seen you, call us today to schedule an appointment.

Location

Find us on the map

Hours of Operation

We are closed for lunch daily from 11:45 AM to 12:45 PM.

Brier Creek Vision Care

Monday:

8:00 AM - 5:00 PM

Tuesday:

8:00 AM - 5:00 PM

Wednesday:

8:00 AM - 5:00 PM

Thursday:

8:00 AM - 5:00 PM

Friday:

8:00 AM - 5:00 PM

Saturday:

Closed

Sunday:

Closed

Testimonial

  • "Excellent office. Staff is helpful and polite when dealing with my special needs child. They understand when he needs break and how to redirect to another technique to achieve goal. Would highly recommend to others!"
    Jennifer, Raleigh, NC
  • "I needed an eye doctor to see me for my concussion issue that effected my eyesight. There isn't many who are able to assess. Dr. Durham knew just how to work with my case in a gentle manner to help keep me calm. I finally have hope for healing now."
    Elizabeth 3/15/19 - Answer to Prayer
  • "Dr Durham is amazing. She takes the time to hear the patient and is extemely knowlegable."
    Susan 3/16/19 - Amazing
  • "All the staff were very helpful & Susan Durham was very thorough & professional"
    Jill 3/14/19
  • "Dr. Durham and her staff are the best and most knowledgeable dealing with brain injuries. Highly recommended!"
    Kristina 3/11/19 - Absolutely the best!
  • "Thought exam was personal, deteilrd and fully explained. Staff were prompt, kind, snd professional. I’d recommend Dr. Durham’s clinic to anyone needing eye care."
    Thomas 3/10/19
  • "The staff was very polite and extremely patient with my condition. Very specific about my condition and caring to help me recover. We will have a long road to recovery together."
    Elizabeth 3/11/19
  • "Didn't have to wait. Very thorough eye exam."
    Sandy 3/7/19 - Great eye checkup
  • "My visit was more than I could of asked for. I told my friends about my visit to the future. Dr. Dunham was extremely knowledgeable, concerned and determined to get it right, Her staff seemed to respect her greatly. staff was trained very well and gave me the confidence they knew what they were doing.
    I have already told my friends about my visit to the future."
    Patricia 2/24/19 - Everything was perfect.
  • "My daughter and I have have had great experiences at Brier Creek Vision! Dr. N. Is fantastic!! The office staff is super friendly, accommodating and very pleasurable to work with. Eye glass frames are plentiful and the opticians are helpful, suggestive and patient! Thanks to everyone for making all of visits wonderful!!"
    Cynthia 2/14/19 – Great Experience
  • "Dr Nakagawara is open, friendly and extremely knowledgeable. Karim Glover in the optical dispensary took great care in explaining and helping me to get great value on a new set of prescription sunglasses that will do much more than my previous set. Extremely happy.
    Loved the Optician!"
    Thomas 2/22/19 - Great Doctors and Team...
  • "I cannot tell you how happy I am with Brier Creek Vision. Everyone from the moment you enter, all the way through the appointment, is knowledgeable friendly and caring. I receive excellent and professional care. Highly recommend!"
    Helen 2/21/19 - Excellent care
  • "Went from 20/30 to 20/20! The sky is the limit with dr Patel. Will continue to bring both my kids here...."
    Temidayo 2/17/19 - Dr Patel Rocks!!!!
  • "I have had nothing but amazing experiences here! The entire staff is very friendly and knowledgeable. I have never walked away unsatisfied."
    Shelby 2/14/19 - Awesome!
  • "This office has all of the latest equipment and skills to take care of your eyes."
    Wales 2/6/19 - Great eye care!
  • "The atmosphere in the office is very pleasant and welcoming. I always feel comfortable in both the waiting room and the exam rooms. Selecting glasses is also a breeze, as the staff is extremely helpful and knowledgable."
    Kris 1/31/19 - Amazing Experience
  • "Our family visit was over the top. The entire staff took their time and made sure each and everyone's exam was through. No pressure to buy glasses. Our experience with Dr. Nakagawara was outstanding!!"
    Melissa 1/31/19 - Recommend
  • "I always have the best visit at Brier Creek Vision. My Doctor, Esther Nakagawara, is the best at what she does! She handles the procedures with care, caution and concern, explains well and has the best solutions to keep your eyes healthy. The staff is accommodating, patient and very kind to everyone; they never mind answering questions. The opticians are helpful in assisting with the selection of eyecare that looks good and works the best for you. I have told many people about my positive experiences at Brier Creek Vision and recommended this office as well."
    Kailah 1/30/19 - The Best in Eyeccare!!
  • "My family and I have been patients of Brier Creek Vision for 2 years. Dr. Nakagawara is a very caring and skilled OD who communicates, teaches and plans well. The staff and optometrists are inviting, knowledgeable and very helpful. We have recommended BCV to all our friends and family!"
    Cynthia 1/30/19 - Highly recommend
  • "I was thrilled to learn about the new Shaw lens concept to treat my daughter's amblyopia!"
    Molly 1/30/19 - Excellent Experience