Vision Therapy in O'Fallon

Keratoconus and Contact Lenses: Finding the Perfect Fit

(636) 281-5367

Understanding Keratoconus: A Vision Disorder

Your cornea, the clear, round, front surface of your eye, is the first ocular tissue that light passes through on its way to the retina. Keratoconus causes the cornea to thin, steepen, and form an irregular cone-shape. This transformation causes light to focus on the retina incorrectly, which leads to distorted vision.

woman putting in contact


What Are the Symptoms of Keratoconus?

There are two primary ways keratoconus affects your vision, and it shows up as:

  • Irregular Astigmatism: The cornea, which typically has a smooth spherical shape, undergoes a transformation into a cone-like structure. This alteration results in a wavy and uneven corneal surface, known as irregular astigmatism.
  • Nearsightedness: As the front part of your eye expands, your vision becomes increasingly nearsighted. This means that you can only see objects clearly when they are up close (however in keratoconus, even objects at near may still appear distorted). Anything at a distance appears blurry.
  • Variable or quickly changing vision. The inability to achieve clear vision in glasses or soft contacts when it had been possible in the recent past.

Recognizing the signs of keratoconus is essential, as early detection can lead to more effective treatment. Keep an eye out for the following symptoms:

  • Double or triple vision when using just one eye
  • Blurriness of objects both near and far
  • Perception of bright lights with halos around them
  • Presence of light streaks
  • The presence of ghost images
  • Persistent blurry vision that affects your ability to drive safely

Scleral Lenses in O'Fallon

Our optometry practice in O'Fallon

Photograph of Matthew  McCoy
Hours
  • Monday 10:00 am - 7:00 pm
  • Tuesday 10:00 am - 6:00 pm
  • Wednesday 9:00 am - 5:00 pm
  • Thursday 9:00 am - 5:00 pm
  • Friday 9:00 am - 5:00 pm
  • Saturday 8:00 am - 4:00 pm
  • Sunday Closed
Insurance Plans
  • VSP
  • Medicare
  • United Healthcare
  • Aetna
  • Spectera
  • Medicaid
  • Anthem
  • Anthem Blue Cross Blue Shield
  • MetLife

adding contact drops

Causes and Risk Factors: Can it Damage Your Vision?

The precise cause of keratoconus remains unknown. Researchers believe that some individuals may have a genetic predisposition to the condition.

However, several factors have been associated with the development of keratoconus:

Family History: If a family member has been diagnosed with keratoconus, there is an increased likelihood of inheriting the condition. If you have keratoconus, it is advisable to have your children's eyes examined for early signs, by the age of 10 at the latest. Early detection of keratoconus is crucial for successful management and prevention of severe disease.

Certain Medical Conditions: Research has indicated a correlation between keratoconus and systemic conditions such as Down syndrome, Ehlers-Danlos syndrome, osteogenesis imperfecta, retinitis pigmentosa, sleep apnea, Lebers congenital amaurosis, Marfan’s, and other connective tissue disorders.Inflammation: Inflammatory conditions like allergies, asthma, or atopic eye disease have the potential to weaken the corneal tissue over time.

Eye Rubbing: Vigorous and persistent eye rubbing can lead to corneal damage. Excessive eye rubbing can accelerate its progression for individuals already diagnosed with keratoconus.

Patient Reviews
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173 Reviews
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- Dec. 30, 2023
Dr. McCoy is very knowledgeable and thorough. The staff is friendly and professional. The location i... s convenient. Highly recommend!
- Nov. 12, 2023
Everything was perfect. First time visiting this one and was actually fun experience. Staff was supe... r nice and there was few minutes wait which made interesting listening party next door in their cooking class 🤣🤣 Really wanted to go there after my eye exam.
- Aug. 25, 2023
Dr. McCoy is An Amazing doctor! Such a great doctor plus so explains everything so well! Highly reco... mmend him!!
- Aug. 22, 2023
Excellent professional service and offered savings compared to other places I've experienced.
- Aug. 19, 2023
My recent visit with Dr. McCoy and his staff was exceptional! My older brother is blind and I am con... ditioned by media to fear lifestyle limiting conditions such as cataracts and macular degeneration. Both the technician and Dr. McCoy greeted me with confident smiles, gentle manners and addressed my concerns with straight forward explanations. Dr. McCoy was thorough, precise and exacting. There wasn't anything about my vision that he didn't check out. The office imaging technology was terrific and so easy to do! Being able to view the retina images of my eyes on a screen as Dr. McCoy explained put me at ease.
- Aug. 04, 2023
Knowledge staff were very helpful and informative. No wait time and worth my drive out there from St... l city.
- Jul. 08, 2023
Everyone I saw and interacted with were very friendly, knowledgeable and professional.
- Jul. 01, 2023
My husband and I recently had our routine eye exams with Dr. McCoy and had a great experience! There... was little wait time, the technician who did our testing was very nice, and Dr. McCoy was thorough and answered any questions we had. Looking forward to our eye exam next year!
- May. 22, 2023
Dr. McCoy and his technicians are very friendly, knowledgeable and helpful. I also love the wide se... lection of frames they offer. The office itself if very comfortable and visually appealing. (no pun intended).
- Feb. 24, 2023
Lovely experience. The staff and doctor were very kind and knowledgeable, and I didn't feel pressure... d into buying more than I needed.
- Jan. 19, 2023
Excellent, caring service and a good value. Will continue to go here for all of our vision needs. ... Staff was especially attentive to special need requests.
- Jun. 26, 2022
I had a concern about my vision and it wasn't time for my annual check up The staff helped me get an... appointment right away. The ladies up front are friendly courteous, and helpful. The doctor did not make me feel rushed during the exam. He answered by questions and took time to ensure I thoroughly understood the next steps. The facilities are clean and orderly. Altogether, the staff made sure that my visit was a success.
- Jun. 18, 2022
The friendly professionalism by staff, the thorough comprehensive exam with a complete explanation. ... Very comfortable and trusted! Dr.McCoy is keeping care as Dr.K had it, trusted!
- May. 27, 2022
I have gone to this location for several years and am very pleased. The doctors have been excellent ... and everyone else that works there are very kind and helpful.
- May. 23, 2022
The doctors are honest and they won’t recommend a prescription unless it’s needed. I’m also t... hrilled with the optometrists. My daughter and I both had issues with our glasses.
- Mar. 11, 2022
Very accurate Rx for these old eye. Staff did not push an expensive frame and lens package. Received... glasses within one week. Will continue to get exam and glasses from Crown Optical which I just began using 2 years ago.
- Feb. 25, 2022
Awesome Staff, Very helpful and knowledable.
- Oct. 29, 2021
My Grandson and I both needed glasses, and he's a first time contact wearer. When my grandson was tr... ying to put his contacts in, he had a very hard time. The ladies at Crown Vision were so very patient with him, I think it took him somewhere around 3 hours the first time, and almost 2 hours the next morning. They never made us feel as if we were taking up to much of their time. They were so patient and friendly and tried so many different ways to help him. We had to meet them at Crown Vision on Midrivers mall drive the next morning for extra practice, because he still couldn't get them in. The ladies continued to be patient , helpful and encouraging , and showed him many different ways to try. After trying so many times, he was finally able to get them in. He almost gave up, but their assurance and encouragement made him keep trying. My Grandson is a Rugby player, so it is very important that he wears these during games. It's very hard to find this type of service, but these ladies are exceptional, and I recommend them and Crown Vision (Ofallon) for anyone needing extra attention. They were the definition of 5 Star.
- Sep. 03, 2021
Good Staff. Very efficent
- Jul. 07, 2021
I worked for the parent company of Crown Vision Centers, AEG, in their remote, outbound call group f... rom April until June. My job was to make appointments for others to various CVCs in the Saint Louis metro area. My wife and I were long overdue for our eye exam appointments, so I scheduled both of us before I recently changed jobs. I went to my appointment this past Saturday, and my wife also went recently to her appointment. I was thoroughly impressed with the friendliness, helpfulness and professionalism of everyone who I met that day: Riley, Hannah, and Dr. John! It was a great experience as a first-time customer, and I highly recommend the O'Fallon CVC!

View All 173 Reviews


Scleral Lenses for Keratoconus: The Game-Changer

Keratoconus presents a unique challenge when it comes to vision correction. Traditional gas permeable? contact lenses often prove ineffective as they cannot conform to the irregular corneal shape. This is where scleral lenses step in as an innovative solution.

Here are four compelling reasons to consider scleral lenses for keratoconus:

  • Enhanced Comfort

    Scleral lenses are larger in diameter compared to traditional rigid gas permeable contact lenses, spreading their weight across a broader, less sensitive area, ensuring comfort during extended wear.

  • Improved Vision

    Unlike glasses, which often offer limited visual improvement for keratoconus patients, scleral lenses can significantly enhance vision clarity and stability.

  • Constant Moisture

    Scleral lenses provide a continuous reservoir of moisture between the lens and the eye's surface, ensuring a soothing and moisture-rich environment for the eyes.

  • No More Eye Rubbing

    The design of scleral lenses minimizes the need for eye rubbing by reducing inciting factors of ocular surface and lid inflammation due to allergy response, reducing the risk of further corneal damage and discomfort.


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Experience Clarity with Scleral Lenses from Crown Vision Center - O' Fallon

Scleral lenses have the potential to provide life-changing improvement in vision clarity and comfort for those battling keratoconus.If you or a loved one has keratoconus and would like to explore the benefits of scleral lenses, schedule a consultation with Crown Vision Center - O' Fallon today. Your journey to clear vision begins here.[b]

(636) 281-5367