Astigmatism

Image of an optometrist helping a patient try on a pair of glasses.

Many correctable vision problems are caused by abnormal eye anatomy. Very few people have perfectly shaped eyes that facilitate ideal vision. Rather, most people have some degree of abnormal curvature or other anatomical irregularities that cause slight visual changes. Astigmatism is one common form of visual impairment that results from irregular anatomy.

What Is Astigmatism?

The clear front area of the eye is called the cornea, which is important for refracting light rays to direct them onto the retinal surface. Light rays pass through the cornea onto the lens. The lens is flexible, changing shape to further focus the light rays and ensure that they hit the retina. Light must bend at a particular angle to result in clear, focused vision. Any abnormalities in eye structure may cause light to be improperly focused onto the retina, preventing visual sensory cells from processing the images.

Astigmatism occurs when either the cornea or the lens is abnormally curved. It is important to note that nearly everyone has some degree of astigmatism, as ocular structures are rarely perfectly shaped. When the cornea or lens has particularly pronounced curvature, however, light rays fail to focus onto the retina. This leads to blurry vision. Unlike farsightedness or nearsightedness, astigmatism causes blurred vision at any distance. Many people have astigmatism as well as farsightedness or nearsightedness.

Diagnosis of Astigmatism

A comprehensive optometry exam checks your eye anatomy and vision for signs of astigmatism. Tests of visual acuity typically reveal some inability to clearly read letters on a distance chart. The eye care provider may also use a keratometer, a tool that measures the curvature of your cornea. By shining a bright light into your cornea and measuring its reflection, the eye doctor can assess the curvature of your cornea. Your eye care provider may also place different lenses in front of your eyes to determine if you have a refractive error and to what extent.

Treatments

Most commonly, treatment for astigmatism consists of prescription eyeglasses or contact lenses. An alternate treatment is orthokeratology, in which your eye doctor provides a series of rigid contact lenses for you to wear for relatively short periods of time. These lenses reshape your cornea, allowing you to have clear vision. Although orthokeratology does not permanently change the shape of your cornea, it may help you go without glasses or contact lenses for everyday activities. Surgery is another option for those who want a more permanent solution.

Astigmatism is very common and relatively easy to treat. If you experience any blurriness or change in vision, consult your eye doctor immediately to receive an optometric exam.

Location

Find us on the map

Hours of Operation

We are closed for lunch daily from 12:00 PM to 1:00 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