Impression-Based Scleral Lenses

Understanding Impression-Based Scleral Lenses

Impression-Based Scleral Lenses are the most customized lens option available for patients with keratoconus or highly irregular corneas. Rather than relying solely on topography or scans, these lenses are created using a direct physical mold (impression) of your eye’s front surface, capturing every micro-detail and asymmetry for a precise, pressure-free fit.

Benefits of Impression-Based Scleral Lenses

These lenses offer an unmatched level of customization and comfort. By molding to the exact contours of your eye, they provide superior centration, stability, and long-term wearability—even in the most complex corneal cases. Many patients experience dramatic improvements in visual clarity, night vision, and relief from discomfort caused by poorly fitting lenses.

How Impression-Based Scleral Lenses Work

We use a gentle, biocompatible impression material—similar to what dentists use—to capture a detailed mold of your eye. That mold is then digitized and used to design and manufacture a lens that mirrors your eye’s shape. This allows us to bypass limitations of scan-based or topography-only fittings, particularly in post-surgical or severely distorted eyes.

Customization and Fitting

This process eliminates the need for guesswork or multiple trial lenses. Instead, the final lens is a one-of-a-kind prosthetic designed around your exact anatomy. It is especially ideal for patients who have failed with other lenses or undergone corneal surgery, including transplants, RK, or LASIK.

Long-term Use and Care

With proper hygiene and handling, these lenses can last 12+ months and deliver consistent comfort and clarity. We provide personalized training and support to ensure the best long-term outcomes, including maintenance and follow-up evaluations.

Considerations and Advantages

Impression-Based Scleral Lenses are often the last—and best—resort for patients who have tried every other option. If you’ve been told that no lens will work for you, or you have ongoing issues with fit and comfort, this may be the solution that finally restores your visual function.

The Evolution of Keratoconus Contact Lens Technology

Each keratoconus case is different—there’s no one-size-fits-all solution. As the technology has advanced, so have the tools we use to match the right lens to each patient’s anatomy. A true keratoconus specialist understands how to utilize this full lens toolkit to achieve better comfort and sharper vision.

• RGP Lenses: Rigid gas permeable lenses neutralize corneal irregularities and offer sharp, effective vision for mild to moderate keratoconus.
• SynergEyes Hybrid Lenses: These lenses combine the clarity of rigid optics with the comfort of a soft outer ring.
• Scleral Lenses: Large-diameter lenses that vault over the cornea, providing hydration, stability, and vision correction for moderate to severe keratoconus.
• Scan-Based Scleral Lenses: These lenses are shaped using 3D corneo-scleral scans to match your eye’s precise dimensions.
• Custom Wavefront Scleral Lenses: Correct higher-order aberrations like glare, halos, and ghosting for unparalleled visual clarity.
• Impression-Based Scleral Lenses: Made from a physical mold of the eye, these lenses offer the ultimate custom fit for complex and post-surgical corneas.
• PROSE Lenses: A prosthetic device that protects and restores the ocular surface while correcting vision.
• EyePrint PRO Lenses: Uses a direct eye impression to design lenses for the most severe cases of irregularity and distortion.

Advanced scleral lenses—like impression-based designs—can significantly reduce glare, halos, and ghosting caused by higher-order aberrations. Patients with prior lens failures often experience life-changing improvements in vision and comfort.

Our Approach to Keratoconus Contact Lenses

At Keratoconus Specialists of Maryland, we specialize in advanced and custom lens designs for patients who have failed with standard care. Impression-based scleral lenses represent the most personalized solution available, and they’ve helped us successfully treat many patients with no other options left.

Choosing the Right Lens for You

Each cornea tells a story. Our team—led by Dr. Irwin Azman and Dr. Benjamin Azman—will evaluate whether an impression-based design is best for your condition or whether another lens from our suite of advanced options would provide better outcomes.

Dr. Azman, one of the country’s top keratoconus specialists, never avoids the challenge of prescribing for the most difficult cases.