Beyond Reading Glasses: How Scleral Lenses Restore Sharp Vision for Covina Adults with Keratoconus

For adults with keratoconus, blurry or distorted vision is not always something a stronger glasses prescription can fix. Keratoconus changes the shape of the cornea, causing it to become thinner and more cone-like instead of maintaining a smooth, rounded surface. As the cornea becomes more irregular, light no longer focuses evenly on the retina, making clear vision harder to achieve.

For patients in Covina who continue struggling with blurry vision despite updated glasses or traditional contact lenses, scleral lenses can provide a more specialized approach to vision correction.

Why Glasses May Not Be Enough for Keratoconus

Reading glasses and standard prescription glasses correct refractive errors by changing how light enters the eye. However, they do not change the irregular surface of a keratoconic cornea.

As keratoconus progresses, patients may experience increasing astigmatism, frequent prescription changes, glare, halos, ghosting, or difficulty seeing clearly at night. Standard soft contact lenses may also have trouble providing stable correction because they generally conform closely to the cornea beneath them.

How Scleral Lenses Improve Vision

Scleral lenses are larger-diameter specialty contact lenses designed to vault over the cornea rather than resting directly on it. Instead, the lens rests on the sclera, which is the white portion of the eye.

Before insertion, the space between the lens and cornea is filled with sterile preservative-free saline. This creates a smooth optical surface over the irregular cornea, allowing light to focus more evenly.

For many Covina adults with keratoconus, this design can provide clearer and more consistent vision than glasses or conventional soft contacts.

Potential benefits of scleral lenses include:

• Sharper, more stable vision despite an irregular corneal shape
• Reduced visual distortion, ghosting, glare, and halos
• Greater lens stability because the lens rests on the sclera
• A fluid reservoir that keeps the corneal surface continuously hydrated
• Customized fitting based on the unique shape and needs of each eye

Scleral Lenses Do More Than Correct a Prescription

A scleral lens fitting is not simply about choosing a lens power. Keratoconus varies considerably from one patient to another, so specialty lenses need to be carefully evaluated and customized.

Measurements of the cornea, prescription, eye health, and overall lens fit help determine how the lens should vault the corneal surface and interact with the surrounding eye. Follow-up visits also allow the fit, vision, and comfort to be evaluated and refined when necessary.

At Covina Hills Optometric Group, we take a comprehensive approach to contact lens evaluations, focusing on vision, fit, comfort, and proper lens care.

When to Consider Specialty Contact Lenses in Covina

If your glasses prescription keeps changing or your vision remains distorted even with correction, the problem may involve the shape of your cornea rather than simply needing stronger lenses. A comprehensive eye examination and specialty contact lens evaluation can help determine whether scleral lenses are appropriate for your visual needs.

Schedule a specialty contact lens evaluation with Covina Hills Optometric Group in Covina, CA, at (626) 508-7171 to learn whether scleral lenses can provide the clearer, more stable vision you have been missing.