Scleral Lenses for Keratoconus: Restoring Sharp Vision When Regular Contacts Fail

Keratoconus can make clear, comfortable vision difficult to achieve with standard glasses or soft contact lenses. As the cornea becomes thinner and develops an irregular, cone-like shape, light no longer focuses properly on the retina. This can cause blurred vision, distortion, glare, and frequent prescription changes.

At Esther Ahn Optometry in Cerritos, scleral lenses offer another option for patients whose vision needs cannot be adequately addressed with traditional contacts. These specialty contact lenses are designed to provide more stable vision while accommodating an irregular corneal surface.

Why Regular Contacts May Not Work for Keratoconus

Standard soft contact lenses generally conform to the shape of the cornea. For someone with keratoconus, that irregular surface can make it difficult for a soft lens to provide consistent correction. Patients may experience fluctuating vision, uncomfortable lenses, or difficulty reaching the level of sharpness they need for driving, computer work, reading, and other daily activities. Traditional contacts may also shift excessively when the corneal shape is highly irregular.

How Scleral Lenses Work

Unlike regular contact lenses that rest primarily on the cornea, scleral lenses are larger and vault over it. The lens rests on the white portion of the eye, known as the sclera, while a reservoir of preservative-free saline fills the space between the lens and cornea.

This design creates a smooth optical surface in front of the irregular cornea, helping light focus more accurately. For many patients with keratoconus, this can provide clearer and more stable vision than glasses or conventional soft lenses.

Potential advantages of scleral lenses include:

•          Sharper, more consistent vision with an irregular cornea

•          Greater lens stability throughout the day

•          Reduced contact between the lens and sensitive corneal tissue

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

•          Customized fitting based on the individual shape of the eye

Personalized Scleral Lens Fitting for Better Vision

Proper fitting is essential for maintaining clear vision, comfort, and eye health. During a specialty contact lens evaluation, we assess the eyes carefully and determine the lens parameters needed to create an appropriate fit.

Follow-up visits also give us an opportunity to evaluate how the lenses settle on the eyes and make adjustments when necessary. Patients receive guidance on inserting, removing, cleaning, and caring for their scleral lenses properly.

When to Consider Scleral Lenses

If you have keratoconus and continue struggling with blurry or distorted vision despite wearing glasses or traditional contacts, a specialty contact lens evaluation may help determine whether scleral lenses are appropriate for you. They may also be considered for other irregular corneal conditions when standard lenses cannot provide satisfactory vision or comfort.

Schedule an eye exam with Esther Ahn Optometry to learn whether scleral contact lenses can help you see more clearly. Visit our office in Cerritos, California, call (562) 809-4041, or use this link to book an appointment today.