How Scleral Lenses Work for Keratoconus? 

Keratoconus is a progressive eye condition that causes the cornea, the clear, dome-shaped front part of your eye, to thin and bulge outward into a cone-like shape. This irregularity distorts light as it enters the eye, leading to blurry, wavy, or double vision.

In the early stages, glasses or soft contact lenses may help, but as keratoconus advances, these solutions become less effective because they cannot conform to the cornea’s uneven shape. That’s where scleral lenses make a difference.

What Are Scleral Lenses?

Scleral lenses are large-diameter gas-permeable contact lenses designed to cover not only the cornea but also part of the sclera (the white of the eye). They are custom-made for each eye, ensuring a perfect fit and clear, stable vision, even in severe cases of keratoconus or corneal irregularities.

Unlike standard contact lenses, scleral lenses don’t touch the cornea directly. Instead, they rest comfortably on the sclera, creating a fluid-filled chamber between the lens and the cornea. This unique design provides both optical correction and soothing comfort for sensitive eyes.

1. Vaulting Over the Cornea

Unlike regular contact lenses that rest directly on the cornea, scleral lenses have a larger diameter that allows them to vault over the corneal surface. This means the lens doesn’t touch the cornea at all, which is crucial for patients with keratoconus whose corneas are often sensitive and irregular.

By creating this gentle vault, scleral lenses eliminate pressure on the cornea, reducing discomfort and preventing further irritation or damage.

2. Resting on the Sclera

The sclera, the white part of the eye, is much less sensitive than the cornea. Scleral lenses are designed to rest on this stable, durable tissue, providing a secure and comfortable fit. Because they don’t move around with every blink, scleral lenses offer exceptional stability and consistent vision, unlike smaller lenses that may shift or dislodge easily.

This design not only improves comfort but also makes scleral lenses ideal for long hours of wear, even for individuals with severe corneal irregularities.

3. Creating a Fluid Reservoir

One of the most remarkable features of scleral lenses is the fluid-filled space they create between the lens and the cornea. Before inserting the lens, this space is filled with a sterile, preservative-free saline solution.

This reservoir of fluid acts as a liquid cushion, providing continuous hydration to the eye and helping mask the irregular corneal shape. The smooth layer of liquid also ensures that light entering the eye refracts evenly, resulting in sharper and more stable vision.

4. Providing Clearer, More Stable Vision

By neutralizing the uneven surface of the cornea, scleral lenses effectively create a new, optically perfect surface for light to pass through. This allows people with keratoconus to experience dramatic improvements in visual clarity, often from severely blurred vision to near-normal sight.

Patients who once struggled with daily activities like reading, driving, or using digital devices often find they can resume these tasks comfortably and confidently after being fitted with scleral lenses.

Final Thoughts

Scleral lenses have transformed the way keratoconus is managed, offering a comfortable and effective alternative to traditional corrective lenses. By vaulting over the cornea, resting gently on the sclera, and maintaining a fluid reservoir that corrects irregularities, they provide clear, stable vision and long-lasting comfort.

At Eyes on Brickell, we specialize in customized scleral lens fittings for keratoconus and other corneal conditions. Our experienced eye care professionals ensure that each lens is precisely designed for your unique eyes, helping you regain clear vision and comfort.

Schedule your scleral lens consultation today with Eyes on Brickell, where advanced eye care meets personalized comfort.

FAQs About Scleral Lenses for Keratoconus

1. Are scleral lenses uncomfortable to wear?

No. Despite their size, scleral lenses are extremely comfortable because they rest on the less sensitive sclera and never touch the cornea directly.

2. How long can I wear scleral lenses each day?

Most patients comfortably wear them for 10–14 hours per day. Your eye doctor will recommend a wearing schedule suited to your eyes.

3. Are scleral lenses safe for keratoconus?

Yes. They are one of the safest and most effective options available for keratoconus. The lenses protect the cornea while improving vision.

4. Do scleral lenses require special care?

Scleral lenses need daily cleaning, rinsing, and filling with sterile saline solution before insertion. Our team will guide you through easy care and maintenance steps.

5. Can scleral lenses improve my vision permanently?

Scleral lenses don’t cure keratoconus, but they dramatically improve your vision quality while you wear them. Regular checkups help maintain optimal results.

6. Are scleral lenses covered by insurance?

In many cases, scleral lenses are considered medically necessary for keratoconus and may be partially or fully covered by insurance. Our staff can help verify your coverage.