How Custom Scleral Lenses Help Advanced Keratoconus Blurring

Advanced keratoconus can make everyday vision feel distorted and unpredictable. As the cornea becomes thinner and develops a cone-like shape, glasses and standard soft contact lenses may no longer provide enough correction. At Mission Family Optometry, we offer custom scleral lenses in Granada Hills for patients who need more precise vision correction than conventional options can provide.

Why Keratoconus Causes Blurred Vision

A healthy cornea has a smooth, rounded surface that helps focus light onto the retina. Keratoconus changes that surface, creating irregular curves that scatter light instead of focusing it evenly.

In advanced cases, a glasses prescription may improve vision only slightly because glasses cannot correct the irregular corneal surface itself. Standard soft contacts often follow the cornea’s uneven shape, which can leave patients with continued blur and unstable vision.

How Scleral Lenses Create a Clearer Optical Surface

Scleral lenses are larger than traditional contacts. Instead of resting directly on the cornea, they extend over it and rest on the white portion of the eye, known as the sclera.

The space between the lens and the cornea is filled with preservative-free saline. This fluid layer helps create a smoother optical surface over the irregular cornea, allowing light to focus more accurately. For many patients with advanced keratoconus, this design can provide clearer and more stable vision than glasses or standard contact lenses.

Potential Benefits for Advanced Keratoconus

Custom scleral lenses may help patients experience:

•          Sharper and more consistent vision

•          Reduced glare, halos, and ghost images

•          Greater lens stability during blinking

•          Improved comfort compared to smaller rigid lenses

•          A protective fluid layer over the corneal surface

•          Better vision for driving, reading, work, and daily activities

Results vary depending on the severity of keratoconus, corneal scarring, and overall eye health. A detailed evaluation helps determine whether scleral lenses are appropriate for your eyes.

The Importance of a Personalized Scleral Lens Fit

Keratoconus affects each cornea differently, so scleral lenses are not a one-size-fits-all solution. A customized fitting evaluates the shape of the cornea, the way the lens rests on the sclera, and the amount of clearance between the lens and the eye.

Small adjustments can make an important difference in vision, comfort, and long-term wear. Follow-up visits also allow us to evaluate the fit and make refinements when needed.

When to Consider Scleral Lenses

You may benefit from a scleral lens evaluation if your vision remains blurry with glasses, soft contacts shift or feel uncomfortable, or smaller rigid lenses do not stay centered. Scleral lenses may also be considered when keratoconus causes significant glare, double images, or difficulty completing routine tasks.

Schedule a contact lens exam with Mission Family Optometry to learn more on how custom scleral lenses can provide clearer, more comfortable vision. Visit our office in Granada Hills, California, or call (818) 360-7522 to book an appointment today.