.jpg)
Scleral lenses are a vision correction option that can be transformative for individuals with complex corneal conditions or severe dry eye disease. Scleral lenses provide eye protection and clear vision. Unlike conventional contact lenses that rest directly on the cornea, the clear tissue covering the colored part of the eye, scleral lenses vault over the cornea and rest on the white part of the eye, known as the sclera.
The design of scleral lenses offers unique protection, as they hydrate the eye’s surface unlike other contact lenses. Continue reading to find out how you can support your corneal health with scleral lenses.
What Is the Scleral Lens Vault?
The vault is the space between the posterior surface of the scleral lens and the cornea. When a scleral lens is fitted correctly, it does not touch the cornea directly. Instead, a fluid-filled reservoir covers the cornea to cushion and protect the delicate tissue. This fluid layer keeps the cornea bathed in a sterile saline solution throughout the day. Providing hydration and a smooth optical surface.
The vault is the feature that distinguishes scleral lenses from traditional contact lenses. Standard soft or rigid gas-permeable lenses rest directly on the cornea, which can be uncomfortable for people with irregular corneal surfaces. The vaulted structure of scleral lenses makes them ideal for patients with keratoconus, corneal scarring, post-surgical irregularities, and severe dry eye.
How Does The Vault Protect The Ocular Surface?
The fluid reservoir formed by the scleral lens vault has several protective functions. First, the saline solution in the vault provides continuous hydration throughout the day. Lubrication is crucial for patients with dry eye syndrome, where the natural tear film is insufficient. The fluid-filled reservoir reduces irritation and promotes healing and cell regeneration.
Second, scleral lenses don’t rest on the cornea causing the irritation that traditional lenses sometimes do. For individuals with sensitive or compromised corneas, the vault reduces discomfort and helps protect the eye from further damage. Instead of placing weight on the cornea, the lens rests on the sclera, which is stronger and less sensitive, allowing it to support the lens without causing harmful side effects.
Lastly, scleral lenses protect the cornea from environmental factors, such as dust, wind, and allergens. Scleral lenses also act as a barrier layer to reduce exposure to irritants that can worsen inflammation or dryness. The barrier provided by scleral lenses is especially beneficial for patients who live or work in dry and dusty climates or those with allergy-related dry eye symptoms.
Why Is It So Important for Scleral Lenses to Fit Precisely?
The exact shape and size of a scleral lens must be carefully customized for each patient to provide adequate protection without causing harm. If the vault is too shallow, it can lead to discomfort, corneal abrasion, or inflammation. On the other hand, if the vault is too deep, bubbles may form in the fluid reservoir, reducing visual clarity or the saline will simply leak out.
Eye care practitioners use advanced corneal mapping and ocular topography to determine the vault depth that best suits each patient’s eye shape and condition. During the fitting, your eye care practitioner will adjust the lens as needed so the fluid is properly distributed across the corneal surface. Follow-up appointments are crucial to assess corneal health and ensure that the lens remains fitted adequately over time.
Who Is an Ideal Candidate for Scleral Lenses?
Scleral lenses can be particularly beneficial for patients who cannot wear traditional contact lenses or glasses due to irregular corneas or severe dry eye. People with Keratoconus, which is a progressive thinning and cone-shaped distortion of the cornea, often find that scleral lenses provide clearer vision and improved comfort. Patients who have experienced corneal trauma, scarring, or transplants can also benefit from the protection of scleral lenses.
Patients with dry eye, particularly those with moderate to severe symptoms, may find relief when wearing scleral lenses. The continuous hydration of the saline solution can lessen symptoms like burning, stinging, and redness that often accompany dry eye. Scleral lenses can become an important part of therapeutic eye care for patients with chronic dry eye, alongside other treatments like eye drops or punctal plugs; a small, biocompatible medical device inserted into the tear duct (puncta) to block tear drainage and increase tear retention on the eye’s surface. Your eye care professional can provide more information regarding this modality.
Scleral Lenses: A Comfortable Alternative
The vaulted design of scleral lenses creates a unique environment that protects the cornea, maintains hydration, and corrects visual distortions. If you experience discomfort, vision problems, or chronic dry eye symptoms, contact Weston Contact Lens Institute. We will assess your individual needs and create a personalized treatment plan that utilizes advanced technologies, including scleral lenses for sensitive eyes.
