Scleral Contact Lenses: Benefits and Uses

At The Optical Shoppe in Smyrna, TN, patients frequently inquire about advanced options for vision correction, particularly those with challenging eye conditions. One option that has revolutionized treatment for individuals with irregular corneas or severe dry eye is scleral contact lenses. These larger-than-average lenses provide both visual clarity and ocular comfort by vaulting over the cornea and resting on the less sensitive sclera. This blog offers a thorough overview of how scleral lenses work, their advantages, and the types of conditions they’re designed to help.

Understanding the Design of Scleral Lenses

How They Differ From Conventional Contact Lenses

Scleral contact lenses are gas-permeable lenses that are significantly larger in diameter than traditional lenses. While standard lenses typically sit on the cornea, scleral lenses extend over the entire corneal surface and rest on the white part of the eye—the sclera. Their design creates a fluid reservoir between the back surface of the lens and the front of the cornea, which serves several purposes: it provides continuous hydration, masks corneal irregularities, and helps improve vision.

This unique structure makes them especially effective for individuals whose eyes do not tolerate conventional soft lenses or whose visual needs exceed the capabilities of standard lenses. The rigidity of scleral lenses allows for precise focusing, while the vaulting structure minimizes mechanical interaction with the sensitive corneal tissue. The result is a combination of comfort and clarity rarely matched by other lens types.

Who Can Benefit from Scleral Lenses?

Ideal Candidates and Clinical Indications

Scleral lenses are particularly well-suited for patients with corneal irregularities or ocular surface diseases that make standard contact lenses ineffective or uncomfortable. These include conditions like keratoconus, post-LASIK ectasia, Stevens-Johnson syndrome, and graft-versus-host disease. They are also an excellent option for individuals with extreme dry eye, especially when other treatments have failed.

For patients with keratoconus, the smooth optical surface of a scleral lens compensates for the distorted shape of the cornea, significantly enhancing visual acuity. Similarly, individuals with corneal transplants or trauma-related scarring may benefit from the stable and customized fit provided by these lenses. Scleral lenses can also be used for patients with severe allergies or lens intolerance, as they tend to move less and trap fewer allergens compared to traditional lenses.

Moreover, individuals who spend significant time in air-conditioned environments or who have chronic dry eye due to autoimmune conditions often find scleral lenses to be a game-changer. The liquid reservoir between the lens and cornea acts as a constant lubricant, providing both comfort and protection.

Key Benefits of Scleral Contact Lenses

A Comprehensive Set of Visual and Comfort Advantages

The advantages of scleral lenses are both functional and therapeutic. Their unique design allows them to address multiple ocular challenges simultaneously. Below are some of the key benefits:

• Improved vision: The stable shape of the lens helps correct vision for patients with corneal irregularities more effectively than glasses or soft lenses.

• Enhanced comfort: The lens vaults over sensitive corneal tissue, reducing irritation and promoting longer wear time.

• Moisture retention: The tear-filled reservoir keeps the cornea hydrated, making these lenses ideal for dry eye sufferers.

• Protection for the ocular surface: Scleral lenses shield the cornea from external irritants and environmental exposure.

• Customizability: Each lens can be tailored to the individual’s eye anatomy, ensuring a better fit and higher tolerance.

Patients often report not only improved vision but also greater comfort during extended wear, particularly those who were previously unable to tolerate any type of contact lens.

The Fitting and Adjustment Process

What Patients Should Expect from Start to Finish

Fitting scleral lenses requires a more comprehensive and precise evaluation than standard contact lenses. The process begins with corneal topography or optical coherence tomography (OCT) to map the contours of the eye in great detail. This mapping is essential to determine the correct size, shape, and vault needed for each individual’s eye.

Once the measurements are complete, a trial lens is placed to assess the fit, comfort, and visual acuity. It may take multiple iterations and follow-up visits to fine-tune the lens design. Because scleral lenses are custom-made, the final lenses are often fabricated in a specialized lab and may take a couple of weeks to arrive.

Patients will need time to adapt to inserting, removing, and cleaning the lenses. Unlike soft lenses, scleral lenses must be filled with a sterile saline solution before insertion and cleaned with recommended solutions after use. Education during the fitting process plays a crucial role in long-term success and compliance.

Common Conditions Treated with Scleral Lenses

Versatile Applications in Ocular Healthcare

Scleral lenses are prescribed for a wide range of eye conditions that impact either the surface of the eye or its shape. These include:

• Keratoconus: A degenerative disease that causes the cornea to thin and bulge into a cone shape, resulting in distorted vision.

• Severe dry eye: Particularly in cases caused by Sjögren’s syndrome or exposure keratitis, where other interventions fail to provide relief.

• Post-surgical corneal changes: Including those following LASIK, PRK, or corneal transplant surgeries that result in irregular corneal surfaces.

• Autoimmune disorders: Conditions such as Stevens-Johnson syndrome or ocular cicatricial pemphigoid, where the ocular surface is compromised.

• Neuropathic ocular pain: Scleral lenses may offer symptom relief by shielding hypersensitive corneal nerves.

For many of these conditions, scleral lenses not only enhance vision but also contribute to long-term ocular health by stabilizing and protecting the eye’s surface.

Managing Expectations and Potential Limitations

Understanding the Scope of Use and Challenges

While scleral lenses offer impressive benefits, patients should understand that they are not a one-size-fits-all solution. The fitting process can be more time-consuming and expensive than with standard lenses, and insurance may not always cover the cost. Furthermore, due to their size and application technique, they can be more challenging to handle—especially for individuals with dexterity issues.

Initial discomfort or visual distortions may occur as the eyes adjust to the lenses, but these typically resolve with time and proper follow-up. It’s also essential to commit to a strict hygiene routine, as improper care can lead to complications such as lens clouding or infection. Despite these challenges, many patients find the long-term benefits far outweigh the initial learning curve and investment.

Regular follow-up with an eye care professional ensures the lenses continue to fit well and provide optimal vision. With advances in lens technology and improved materials, modern scleral lenses are more breathable and comfortable than ever, expanding their use to broader patient populations.

A Trusted Option for Complex Vision Needs

Empowering Patients with Specialized Vision Tools

For patients dealing with unique eye conditions or persistent discomfort from traditional lenses, scleral lenses represent a powerful alternative. Their ability to restore clear vision while protecting and hydrating the eye makes them invaluable in managing a wide range of ocular health challenges.

At The Optical Shoppe in Smyrna, TN, patient education is at the core of promoting effective eye care. By understanding how scleral lenses function, who they’re designed for, and what to expect during treatment, patients can make confident decisions about their visual health. These lenses may not be for everyone, but for those who qualify, they offer both clarity and comfort that can significantly improve quality of life.

Resources

1. DeNaeyer, G. W., Sanders, D. R., & Van der Worp, E. (2017). Contemporary Scleral Lenses: Theory and Application. Contact Lens Spectrum.

2. Schornack, M. M., & Patel, S. V. (2010). Scleral Lenses in the Management of Keratoconus. Eye & Contact Lens.

3. Caroline, P. J., & André, M. P. (2012). Understanding Scleral Lenses. Contact Lens & Anterior Eye.