Keratoconus and Scleral Lenses: How Custom Contacts Can Improve Blurry, Distorted Vision

Keratoconus can make everyday vision frustrating. As the cornea becomes thinner and develops a cone-like shape, light no longer focuses evenly inside the eye. This can cause blurry vision, distortion, glare, and frequent prescription changes. For patients who struggle to achieve clear vision with glasses or standard contact lenses, custom scleral lenses may provide a more effective solution. At Miller Optometry, we offer specialty contact lens options designed for irregular corneas, including scleral lenses for patients with keratoconus.

Why Keratoconus Causes Distorted Vision

The cornea is normally smooth and dome-shaped, helping focus light clearly onto the retina. With keratoconus, the cornea gradually thins and bulges outward. Because the surface becomes irregular, glasses may not fully correct the resulting visual distortion.

Symptoms can vary depending on the severity of the condition. Common concerns include:

•          Blurry or distorted vision

•          Increased glare or halos around lights

•          Difficulty seeing clearly at night

•          Frequent changes in glasses or contact lens prescriptions

•          Difficulty getting sharp vision with regular contacts

When these problems interfere with work, driving, reading, or other daily activities, a specialty contact lens evaluation can help determine whether scleral lenses are appropriate.

How Scleral Lenses Work for Keratoconus

Unlike traditional contact lenses that sit directly on the cornea, scleral lenses are larger and designed to vault over the corneal surface. They rest on the sclera, which is the white portion of the eye. A fluid-filled space remains between the lens and the cornea.

This design is particularly helpful for keratoconus because the lens creates a smooth optical surface over the irregular cornea. Instead of light passing through the uneven corneal shape, it passes through the more uniform surface created by the scleral lens. The result can be sharper and more stable vision than many patients are able to achieve with glasses or conventional soft contacts.

Custom Fitting Makes a Difference

Keratoconus affects every eye differently, which is why scleral lenses require a customized fitting. The shape, size, and positioning of the lens must work with the individual contours of the eye.

At our Yucaipa optometry office, we evaluate the eyes carefully to determine the appropriate specialty contact lens approach. A properly fitted scleral lens should provide stable vision while avoiding unnecessary pressure on the irregular cornea.

Because scleral lenses rest on the sclera rather than directly on the cornea, they may also offer improved stability and comfort for patients who have struggled with other rigid contact lenses.

Finding Clearer Vision With Keratoconus

Living with keratoconus does not mean you have to accept constantly blurry or distorted vision. Specialty contact lenses can provide another option when standard vision correction is no longer giving you the clarity you need.

If keratoconus is affecting your vision, schedule a specialty contact lens evaluation with Miller Optometry to find out whether custom scleral lenses are right for you. Contact our office in Yucaipa, CA, by calling (909) 341-1800 to book an appointment.