What services does the Cloud Hospital platform provide?

The platform supports overseas marketing, patient reservations, payment management, follow-up care, and multilingual communication.

How many languages does the platform support?

Cloud Hospital supports 40 languages, including English, Japanese, Chinese, and Russian.

What type of platform is Cloud Hospital?

Cloud Hospital is a B2B Software-as-a-Service platform that supports hospitals in managing international patient engagement.

Scleral Lenses: The Best Solution for Keratoconus Patients?

Introduction

When the world begins to blur around you — streetlights glowing into starbursts, words on a screen bending out of focus — it’s often more than just tired eyes. For many people, these early signs point to a progressive corneal condition called keratoconus. While traditional glasses or soft contact lenses may no longer provide clear vision, there is an advanced solution that has transformed the lives of countless patients: scleral lenses.

At Gangnam St. Mary’s One Eye Clinic, we see many patients who come in with one question: “Are scleral lenses really the best option for keratoconus?”
Let’s explore the science, experience, and reality behind this life-changing technology.

What Is Keratoconus?

Keratoconus is a condition where the cornea — the clear front surface of the eye — gradually thins and bulges outward into a cone-like shape.
Imagine a camera lens losing its perfect curvature: even the smallest distortion can blur every image it captures. Similarly, a misshapen cornea scatters light unevenly, leading to distorted or ghosted vision, sensitivity to light, and frequent prescription changes.

While keratoconus often begins in the teenage years or early 20s, it can progress silently for years. Some patients only realize the extent of the problem when one eye suddenly becomes much worse than the other.

Why Regular Glasses and Contacts Stop Working

In the early stages, glasses or standard soft lenses can help. But as the cornea becomes more irregular, light entering the eye can no longer be properly focused.
Soft lenses conform to the cornea’s uneven shape, so they fail to correct the optical distortion.

Rigid gas-permeable (RGP) lenses offer better optical correction, but many keratoconus patients find them uncomfortable. These small lenses rest directly on the cornea’s surface, which can cause irritation or lens displacement — especially when the cornea becomes too steep or uneven.

That’s where scleral lenses come in — offering both clarity and comfort.

What Are Scleral Lenses?

Scleral lenses are large-diameter, custom-designed lenses that vault entirely over the cornea and rest gently on the sclera — the white part of the eye.
Between the lens and the cornea is a thin, fluid-filled layer that smooths out the irregularities of the corneal surface.

In essence, scleral lenses create a perfect optical dome, allowing light to enter the eye in a controlled, undistorted way — restoring crisp, high-definition vision.

How Scleral Lenses Help Keratoconus Patients

Superior Visual Clarity
By creating a new, smooth refractive surface, scleral lenses neutralize the corneal irregularity caused by keratoconus. Many patients describe the first day wearing them as “seeing the world in focus again” after years of blur.
Enhanced Comfort
Because scleral lenses sit on the sclera (which has fewer nerve endings) rather than the sensitive cornea, they are surprisingly comfortable — even for patients who couldn’t tolerate other hard lenses.
Protection for the Cornea
The fluid reservoir beneath the lens acts like a liquid bandage, protecting the delicate cornea from mechanical irritation and dryness.
Stable Fit
Their large size makes scleral lenses more stable — they don’t pop out during blinking or sports, and they provide consistent vision all day.

In Korea, where keratoconus diagnosis has become more precise thanks to advanced corneal topography and optical coherence tomography (OCT), more eye specialists are turning to scleral lenses as a first-line option for moderate to advanced cases.

At Gangnam St. Mary’s One Eye Clinic, we’ve observed that Korean patients often have smaller corneal diameters and higher sensitivity to lens discomfort, which makes scleral designs especially beneficial. Dr. Man-Soo Kim and our corneal team often tailor the lens curvature and vault height using 3D corneal mapping to achieve the most natural visual result possible.

The Fitting Process: Precision Meets Personalization

Fitting scleral lenses is both an art and a science.
Unlike standard contact lenses, which come in fixed sizes, scleral lenses are fully custom-made for each patient. Here’s what the process looks like at Gangnam St. Mary’s:

Comprehensive Corneal Imaging
Using topography and elevation maps, we measure every contour of your cornea and sclera.
Diagnostic Lens Trial
A trial lens is applied to evaluate the vault, alignment, and fluid reservoir. The doctor observes how the lens settles over time.
Customized Design and Fabrication
The final lens is designed with micron-level precision to match your eye’s unique shape. Advanced materials ensure maximum oxygen transmission to maintain corneal health.
Training and Follow-up
Patients receive personalized guidance on lens handling, cleaning, and wear schedules. Regular follow-ups ensure comfort and optimal vision over time.

Are Scleral Lenses a Permanent Solution?

Scleral lenses are an excellent non-surgical option for managing keratoconus — especially in its moderate stages. However, they do not cure or halt the disease itself.
For progressive keratoconus, corneal cross-linking (CXL) is often recommended to strengthen the cornea and prevent further thinning. After stabilization with CXL, scleral lenses can then provide lasting visual correction.

Many of our patients use scleral lenses for years with excellent results. As technology evolves, newer designs — such as hybrid scleral lenses and smart lenses with oxygen micro-channels — are making the experience even more seamless.

Comparing Options: Scleral Lenses vs. Other Treatments

Treatment	Best For	Key Advantage	Limitation
Glasses	Very early keratoconus	Simple and non-invasive	Ineffective for irregular corneas
Soft Contacts	Mild cases	Comfortable	Poor visual correction
RGP Lenses	Moderate cases	Sharp vision	Can cause discomfort
Scleral Lenses	Moderate to advanced	Exceptional clarity and comfort	Requires custom fitting
Corneal Cross-Linking (CXL)	Progressive keratoconus	Halts progression	Doesn’t correct vision directly
Corneal Transplant	Severe scarring	Restores structure	Major surgery with recovery time

For most patients between early and advanced stages, scleral lenses represent the sweet spot — balancing vision quality, comfort, and safety.

What to Expect as a Patient

The adjustment period varies. Most patients adapt within a few days to a couple of weeks. Initially, inserting and removing the lenses may take practice, but modern insertion tools and patient education make it manageable for all ages.

At our clinic, we’ve seen international patients who had nearly given up hope — often after trying multiple lenses abroad — regain stable vision and confidence through customized scleral designs.

As one patient described after fitting,

“It felt like I got my eyesight back after years of fog. I can drive at night again — and I’m not afraid to look at bright lights.”

When Scleral Lenses Aren’t Enough

In some advanced cases where scarring or severe corneal distortion is present, even scleral lenses may not provide adequate vision. In such cases, topography-guided PRK, corneal ring implants (Intacs), or partial corneal transplants (DALK) may be considered.
At Gangnam St. Mary’s One Eye Clinic, all of these options are available under one roof, ensuring that patients receive seamless care from diagnosis to long-term management.

The Gangnam St. Mary’s Approach: Precision with Compassion

With over 20 years of expertise in corneal and refractive surgery, Dr. Man-Soo Kim and our specialized team take a holistic approach to keratoconus management.
We don’t simply prescribe lenses — we design a personalized vision plan that integrates diagnostics, medical therapy, and, when needed, surgical stabilization.

Our clinic combines the latest imaging technologies, internationally certified lens systems, and a patient-first philosophy that makes all the difference — especially for long-term comfort and confidence.

Whether you’re a local resident or an international visitor seeking keratoconus treatment in Seoul, you’ll find that our clinic blends the precision of modern ophthalmology with the warmth of individualized care.

Final Thoughts: Are Scleral Lenses the Best Solution?

For most keratoconus patients, yes — scleral lenses offer the best balance of visual clarity, comfort, and corneal protection available today.
They’re not just a treatment but a bridge to normalcy — allowing patients to live, work, and see with freedom again.

However, every eye is unique. The best solution always begins with a comprehensive evaluation and a long-term care plan tailored to your eye’s condition.

If You’re Considering Scleral Lenses in Korea

If you’ve been diagnosed with keratoconus — or suspect that your vision problems go beyond simple nearsightedness — consider visiting a specialized corneal center like Gangnam St. Mary’s One Eye Clinic in Seoul.
Our bilingual staff and advanced diagnostic systems ensure comfortable care for both local and international patients.

You can schedule a consultation to explore whether scleral lenses or other treatments are right for you — and take the first step toward clearer, healthier vision.