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Understanding Keratoconus and the Role of Scleral Lenses

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What is Keratoconus?

Kerataconus is a condition that affects the cornea, the clear front part of the eye. Although it might sound intimidating, understanding keratoconus and its available treatments can help you or someone you know find proper treatment and maintain clear vision.

At Apple Valley Eye Care, we help patients with keratoconus achieve clear, comfortable, and healthy vision using scleral contact lenses. Contact us to schedule your appointment if you or someone you love has been diagnosed with a corneal condition.

Keratoconus is an eye condition where the cornea, which is normally round and dome-shaped, becomes thin and develops a cone-like bulge. This irregular shape affects the cornea's ability to properly focus light onto the retina, resulting in blurry and distorted vision.

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Causes of Keratoconus

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While the exact cause of keratoconus is still not fully understood, it is believed to be a combination of genetic and environmental factors. If you have a family history of keratoconus, you may be at a higher risk of developing the condition. Frequent eye rubbing, chronic eye irritation, and certain underlying conditions, such as allergies, can also contribute to its development.


Symptoms of Keratoconus

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Keratoconus typically starts during the teenage years and gradually progresses over time. The following symptoms may indicate the presence of keratoconus:

  • Blurred or distorted vision: Objects may appear distorted, and it can become increasingly difficult to see clearly even with corrective lenses.
  • Increased sensitivity to light: Bright lights may cause discomfort and glare.
  • Halos and ghosting: Seeing halos or ghosting around lights, especially at night.
  • Eye strain and fatigue: Eyes may feel tired or strained, especially after focusing on objects for extended periods.

Treatment Options for Keratoconus

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Several treatment and corrective options are available for keratoconus. The choice of treatment depends on the severity of the condition and the individual's specific needs. The options include:

  • Glasses or contact lenses: In the early stages, regular glasses or soft contact lenses may be sufficient to correct vision. However, as the condition progresses, specialized lenses become necessary.
  • Hybrid lenses: Hybrid lenses combine the features of rigid and soft lenses. They have a rigid center for clear vision and a soft outer ring for increased comfort.
  • Corneal cross-linking (CXL): This treatment aims to strengthen the cornea using a combination of riboflavin eye drops and ultraviolet light. CXL can help slow down the progression of keratoconus.
  • Scleral lenses: Scleral lenses are becoming increasingly popular for managing keratoconus due to their unique design, comfort, and optical clarity.

Scleral Lenses: A Promising Solution at Apple Valley Eye Care

Scleral lenses are large, rigid lenses that vault over the cornea, resting on the sclera (the white part of the eye). Unlike traditional contact lenses, which sit directly on the cornea, scleral lenses create a tear-filled space between the lens and the cornea. This reservoir of fluid acts as a protective barrier, keeping the cornea hydrated and providing a smooth optical surface for improved vision.

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How Do Scleral Lenses Work?

Diagram explaining Keratoconus

Diagram explaining Keratoconus

When a person with keratoconus wears scleral lenses, the lens creates a uniform surface over the irregular cornea. This helps to reduce distortions and provide clearer vision. The liquid reservoir also moisturizes the cornea, reducing dryness and discomfort. In fact, some studies have found that patients with keratoconus who consistently wear scleral lenses have a much lower chance of needing a corneal transplant. This is due largely to the fact that scleral lenses protect the cornea and shield it from irritation due to blinking and other factors.

Scleral lenses are custom-made for each individual's eye shape and condition. They are highly durable and can usually be worn for longer periods without discomfort.

Effective Keratoconus Treatment at Apple Valley Eye Care

Living with keratoconus can be challenging, but with the right understanding and treatment, individuals can achieve improved vision and a better quality of life. While various treatment options exist, scleral lenses have gained recognition for their ability to address the unique needs of those with keratoconus.

If you suspect you may have keratoconus or know someone who does, consult an eye care professional at Apple Valley Eye Care who can guide you through the available treatment options, including the potential benefits of scleral lenses. Remember, early detection and intervention are key to managing this condition effectively.


Keratoconus FAQs

Can keratoconus be prevented?

Currently, there is no known way to prevent keratoconus. However, avoiding excessive eye rubbing and taking steps to maintain good overall eye health may help reduce the risk of progression.

Can scleral lenses be uncomfortable to wear?

While it may take some time to adjust to wearing scleral lenses, they are designed for comfort and improved vision. The liquid reservoir between the lens and the cornea helps keep the eyes hydrated, reducing discomfort often associated with other types of lenses.

Patient Reviews
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367 Reviews
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- Feb. 27, 2026
Dr Annika is wonderful. She is so knowledgeable and caring and I trust her judgment and treatment co... mpletely. The staff is great . I have been a patient for almost 10 years.
- Feb. 27, 2026
If it weren’t for the high tech instrumentation and ability to take a picture of my retina without... dilation, they never would have caught my retinal tear. I was going to deny the dilation because I had to drive and work. Luckily they didn’t need it!
- Feb. 25, 2026
The staff are very friendly, helpful and knowledgeable.
- Feb. 25, 2026
Amanda and all the staff were friendly kind and helpful!
- Feb. 23, 2026
very professional
- Feb. 20, 2026
Great care for the entire family. Dr. McMullen is especially kind, knowledgeable, and professional. ... Great selection of eye glasses and wonderful customer service.
- Feb. 02, 2026
I drive across town to receive the best eye care the Twin Cities has to offer. State of the art equi... pment. Professional doctors and clinic setting. Qualified to manage both vision and many types of eye issues.
- Jan. 06, 2026
Exceptional service and I trust Apple Valley Eye Care 100%
- Aug. 23, 2025
I first walked in last Friday thinking that possibly they would be able to do a walk-in, but they do... n’t do that. So I looked over their glasses selection found a pair I liked and then put in my information and got an appointment scheduled. Today when I walked in, everything was easy and went very well. I’m a type two diabetic and they were able to help check me for eye issues for that. I think the whole situation probably only took about 45 minutes. The only thing I can say bad about them is that the intake form that I filled out online wasn’t necessarily working well when it came to taking my insurance card. But other than that, the staff was wonderful and the whole overall look of the office was nice and immaculate.
- May. 06, 2025
I broke my eyeglass frames that I bought from AVEC, so I took them back in. I was told they are not ... fixable, and AVEC doesn't sell that brand anymore. The girl at the eyeglass counter was nice enough to show me where to find the info to order them online. When I got the new frames, I took the old lenses back in and AVEC put the old lenses in the new frames with no question. Such great service!! I've never had a bad experience or bad service from anyone there--they are all great!
- Apr. 19, 2025
I had a great first visit to Apple Valley Eye Care. Lauren and Dr. McMullen listened to my concerns ... and made me feel comfortable. There was no pressure to purchase glasses or contacts.
- Apr. 11, 2025
Dr. Pat is knowledgeable and kind!
- Apr. 11, 2025
Always great professional service with Apple Valley Eye Care! Thank You!
- Apr. 11, 2025
I was very impressed. Everyone I worked with enjoyed their job, and it shows.
- Feb. 19, 2025
Dr. Anderson is extremely knowledgeable and thorough. I’m grateful.
- Feb. 19, 2025
Quick and efficient staff were very accommodating
- Jan. 27, 2025
The staff at Apple Valley Eye Care are second to none! I have been a patient since the 1980s. Got ma... rried, had two kids who are now grown up- I don’t know why we would go anywhere else!
- Jan. 11, 2025
Very friendly and customer oriented eyecare team. It was my first time visiting this office, but I s... ensed the courtesy and respect between clients and providers. I would strongly recommend this office to anyone seeking quality eyecare and topnotch eyeglass frames.
- Dec. 04, 2024
Great staff. Very professional. Found cataracts and referred me to a good surgeon.
- Nov. 20, 2024
Doctor Wellik has been my doctor for years and I love him. Differently a "A" in my book.Also everyo... ne is very nice and helpful.

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Navigating Keratoconus Together

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