Scleral lenses are large specialty contact lenses that rest on the white part of the eye instead of sitting directly on the cornea. This design creates a smooth optical surface and a fluid-filled space between the lens and the eye. Dr. Terry Tsang Optometry, Inc. lists scleral contacts among its core services in Irvine, CA, and Dr. Tsang’s bio highlights her experience fitting scleral lenses for complex corneal conditions.
How Scleral Lenses Work
Unlike standard soft contacts, scleral lenses vault over the cornea. That means the lens does not rest on the most sensitive part of the eye. The space underneath the lens holds fluid, which can help create more stable vision and improve comfort for patients with uneven corneas or significant dryness. Because of this design, scleral lenses are often used when regular contacts do not provide the right fit or visual clarity. Dr. Terry Tsang Optometry, Inc. specifically offers scleral contacts as a specialty service.
What Makes Them Different From Standard Contact Lenses
The biggest difference is size and fit. Standard contact lenses typically sit on the cornea, while scleral lenses are larger and rest on the sclera. This can make them especially useful for patients who need a more customized solution. Scleral lenses are also different because they are often chosen for more advanced vision or ocular surface needs rather than simple routine correction. Dr. Tsang’s practice notes experience with complex contact lens fittings and corneal conditions, which supports this more specialized role.
Who May Benefit From Scleral Lenses
Scleral lenses are often considered for patients with keratoconus, irregular corneas, severe dry eye, or other corneal conditions that make standard lenses difficult to wear. They may also help patients who want sharper vision but have not had success with conventional contacts. On the practice website, Dr. Tsang is described as experienced in fitting scleral lenses for keratoconus, infant aphakia, and other corneal conditions.
Why Patients Often Notice Better Comfort
Because scleral lenses hold a layer of fluid over the cornea, many patients find them more comfortable than they expected from a rigid lens. They can also feel more stable on the eye because of their larger design. While every fit is different, comfort is one reason scleral lenses continue to be a strong option for patients with dry eye or irregular corneal surfaces. The practice blog also highlights scleral lenses as a helpful option for severe dry eyes.
What a Scleral Lens Evaluation May Include
A scleral lens evaluation is typically more detailed than a standard contact lens exam. It may include corneal measurements, a close look at eye health, and trial fitting to see how the lens aligns and performs. Patients considering scleral lenses may discuss:
Vision clarity and comfort goals
Dry eye symptoms
Corneal shape or irregularity
Past trouble with standard contact lenses
Long-term contact lens wear needs
A customized fitting matters because scleral lenses are designed around the specific needs of the patient.
Why a Specialist Fit Matters
Scleral lenses can offer a very different experience from standard lenses, but the success of the treatment depends on expert fitting and follow-up care. Dr. Terry Tsang Optometry, Inc. offers scleral contacts in Irvine, CA and is located at 16520 Bake Pkwy Ste 240, Irvine, CA 92618.
To learn whether scleral lenses are right for you, contact Dr. Terry Tsang Optometry, Inc. in Irvine, CA at (949) 870-2763.





