If you’re reading this, you or someone you care about may have been recently diagnosed with keratoconus. We’ve compiled a few commonly asked questions about keratoconus to help you understand what it is, what causes it, and how your eye doctor can help.

1. What Is Keratoconus?

Keratoconus is a progressive, non-inflammatory disease that causes the cornea to thin and bulge, resulting in a cone-shaped cornea. Over time, this bulge leads to myopia and irregular astigmatism, and vision becomes progressively distorted. Ongoing treatment is crucial to prevent significant vision loss.

2. What Are the Symptoms of Keratoconus?

Many patients aren’t aware that they have keratoconus, which typically begins during the teenage years.

Symptoms of keratoconus include:

• Difficulty seeing at night
• Blurry vision
• Halos and glare around lights
• Increased sensitivity to bright light
• Headaches or eye irritation associated with eye pain
• Progressively worsening vision that’s not easily corrected

3. What Causes Keratoconus?

While there is no one cause of keratoconus, a paper published in Biomed Research International (2015) identified these risk factors:

• Genetics. About one in 10 people with keratoconus also has a family member with the condition.
• Inflammation. Irritation and inflammation from allergies, asthma and other atopic eye diseases can lend to the development of keratoconus.
• Frequent eye rubbing. Intense and frequent eye rubbing is thought to thin out the cornea and can worsen the condition.
• Underlying disorders. Keratoconus has been associated with several conditions, including Down syndrome, Ehlers-Danlos syndrome, Leber congenital amaurosis, Marfan syndrome and Osteogenesis imperfecta.
• UV light. UV light can cause oxidative stress, which weakens the corneas in predisposed eyes.
• Weak collagen. In a healthy eye, small protein fibers called collagen help keep the cornea in a dome-like shape and free from bulges. In the case of keratoconus, the collagen fibers become weak and therefore can’t maintain the shape of the eye, which causes the cornea to bulge.

4. How Is Keratoconus Treated?

Scleral lenses are the most common and successful treatment for patients with keratoconus. These are specialized rigid, gas permeable contact lenses that have a very wide [diameter] and vault over the entire corneal surface, making them effective and comfortable for people with keratoconus.

5. Is There a Cure for Keratoconus?

Currently, there is no cure for keratoconus. However, in most cases, it can be successfully managed.

For mild to moderate keratoconus, scleral contact lenses are typically the treatment of choice, as they provide clear, comfortable vision.

A relatively non-invasive procedure called corneal cross-linking (CXL) can stabilize and strengthen a thinning and irregularly shaped cornea.

At Lakeline Vision Source's Scleral Lens & Keratoconus Center, we can recommend the best treatment options for your keratoconus, to help preserve your vision, and ensure the highest level of comfort and visual acuity. Call to schedule an appointment to start discussing your keratoconus treatment options.

Lakeline Vision Source's Scleral Lens & Keratoconus Center serves patients from Austin, Cedar Park, Brushy Creek, and Round Rock, all throughout Texas .

Q: Can You Go Blind If You Have Keratoconus?

• A: Keratoconus does not typically cause total blindness. However, as keratoconus progresses it can cause visual impairment including blurred distance vision, distortion, glare, astigmatism, extreme light sensitivity and even vision loss that can be classified as “legal blindness.

Q: Does keratoconus affect both eyes?

• A: Yes, in approximately 90% of keratoconus cases, the disease will manifest in both eyes. However, the rate of progression and the timing of the onset of the disease is different for each eye.

Scleral contact lenses have been called “life-changing” and “transformative” by patients who wear them.

What makes these contact lenses so revolutionary?

What Are Scleral Lenses?

Scleral lenses are contacts that vault over the entire cornea and rest on the white part of the eye (sclera). Their diameter is much larger than standard lenses, which adds to their comfort and compatibility with hard-to-fit eyes.

Here’s why they’re gaining popularity in the contact lens world and why patients and doctors are calling sclerals a big deal.

1. Sclerals are Ideal for People with Corneal Irregularities or Dry Eyes

There was a time when patients with corneal irregularities or severe dry eye syndrome weren’t able to wear contact lenses at all, due to the discomfort associated with direct corneal contact. Nowadays, patients with keratoconus, other corneal aberrations or dry eye can successfully wear scleral contact lenses and enjoy comfortable and crisp vision.

Scleral lenses are also great for patients with corneal dystrophy, high astigmatism, Sjorgren’s syndrome, corneal trauma and corneal ectasia, or who have undergone cataract surgery.

2. They’re Completely Custom-Made

Each pair of scleral contact lenses is custom-designed to gently and securely rest on your unique eyes. The fitting process for scleral lenses starts with corneal topography, where the optometrist creates a digital map of your eye’s surface. This information is then used to customize your perfectly fitted pair of sclerals.

3. They Offer Optimal Visual Clarity and Comfort

The liquid reservoir that sits between the lens and the eye helps enhance the visual optics of the lens. Moreover, scleral lenses are made of very high-grade materials and don’t place any pressure on the cornea, delivering ultimate all-day comfort. Many patients have reported that they comfortably wear sclerals for up to 14 hours a day, which is longer than the wear time for standard soft contact lenses.

4. They Promote Eye Healing

Scleral contact lenses protect the eye by surrounding it with an oxygen-permeable, liquid-filled chamber. This hydrating environment gives the eye the moisture and oxygen it needs to stay healthy and ward off outside irritants.

This can also explain why scleral lenses promote healing of the eye’s surface, whether after a corneal transplant or when recovering from a chemical burn or other eye injury.

If you or a loved one have been diagnosed with a corneal condition that prevents you from wearing standard lenses, consider scleral lenses. To schedule an appointment or to learn more, call Lakeline Vision Source's Scleral Lens & Keratoconus Center in Cedar Park today!

Lakeline Vision Source's Scleral Lens & Keratoconus Center serves patients from Austin, Cedar Park, Brushy Creek, Round Rock and throughout Texas .

Q: #1: How long do a pair of scleral lenses last?

• A: Scleral lenses can last 1-2 years before requiring replacement. Your optometrist will provide you with instructions on how to wear and care for your lenses to keep them feeling fresh and clean, day in day out.

Q: #2: Are scleral lenses expensive?

• A: Just like any other customized product, scleral lenses tend to be more expensive than standard soft contact lenses. Although they have a higher price point, most patients who wear them will tell you that their comfort, visual clarity and stability make them worth the cost.