How Scleral Lenses Vault the Cornea to Restore Sharp Vision for Keratoconus Patients

Keratoconus changes the shape of the cornea, causing it to become thinner and develop a cone-like bulge. Because the cornea is responsible for focusing light, this irregular shape can lead to blurry, distorted vision that may not be fully corrected with standard glasses or soft contact lenses. At Renaissance Eye Care in Florence, we offer specialty contact lens options for patients with irregular corneas, including scleral lenses.

Why Keratoconus Causes Distorted Vision

A healthy cornea has a smooth, rounded surface that helps light focus properly on the retina. With keratoconus, the corneal surface becomes irregular. Light may scatter instead of focusing at a single point, resulting in glare, halos, ghosting, double images, and reduced visual clarity.

As keratoconus progresses, traditional vision correction may become less effective because glasses and standard soft lenses cannot create a smooth optical surface over the irregular cornea.

How Scleral Lenses Vault Over the Cornea

Unlike traditional contact lenses that sit directly on the cornea, scleral lenses are larger and rest on the white portion of the eye, known as the sclera. The center of the lens vaults completely over the cornea without placing pressure directly on its irregular surface.

Before insertion, the lens is filled with sterile saline solution. This creates a fluid reservoir between the scleral lens and the cornea. Together, the rigid lens surface and fluid layer help neutralize corneal irregularities so light can enter the eye more evenly.

Benefits of Scleral Lenses for Keratoconus

For the right patient, scleral lenses may provide several important advantages:

•          Sharper and more consistent vision

•          Reduced visual distortion, glare, and ghosting

•          Greater lens stability compared with smaller contact lenses

•          Improved comfort because the lens does not rest directly on the sensitive cornea

•          A fluid reservoir that can help keep the corneal surface hydrated

Because every keratoconus patient has a different corneal shape, proper customization is an important part of achieving comfortable and effective vision correction.

Why A Precise Scleral Lens Fit Matters

During a specialty contact lens evaluation in Florence, we assess the shape and condition of the cornea and determine how the lens should vault over its surface. The goal is to provide adequate clearance over the cornea while creating a stable fit on the sclera. A carefully designed lens can improve visual quality while supporting comfortable wear throughout the day.

Find Clearer Vision With Scleral Lenses In Florence

If keratoconus is making everyday activities difficult or traditional glasses and contacts are no longer providing the clarity you need, schedule a specialty contact lens evaluation with Renaissance Eye Care to find out whether scleral lenses are right for you. Contact our office in Florence, AL, by calling (256) 767-5000 to book an appointment today.