Scleral Contact Lenses

Scleral lenses are large, gas-permeable contact lenses that rest on the sclera (the white part of the eye) rather than on the cornea like traditional contact lenses. Here are some key points about scleral lenses:

  1. Design: Scleral lenses are larger in diameter (typically 14.5 to 24 mm) compared to traditional contact lenses. They vault over the entire corneal surface and rest on the sclera, creating a fluid-filled space between the lens and the cornea.

  2. Purpose: Scleral lenses are primarily used to correct complex refractive errors, irregular corneas (such as in keratoconus), and conditions that cause dryness or discomfort with traditional lenses. They can provide clear vision by masking irregularities in the corneal surface.

  3. Benefits:

    • Comfort: The larger size and design of scleral lenses often provide greater comfort, as they do not touch the sensitive corneal surface directly.

    • Stability: They are more stable on the eye compared to smaller lenses, making them less likely to dislodge or move during blinking.

    • Vision Quality: Scleral lenses can improve vision quality by creating a smooth optical surface over irregularities in the cornea.

  4. Applications:

    • Keratoconus: Scleral lenses are frequently used to manage vision problems caused by keratoconus, a condition where the cornea becomes thin and cone-shaped.

    • Post-Surgical Cases: They can also be used after certain eye surgeries or in cases of corneal transplants to improve vision and comfort.

    • Severe Dry Eye: Scleral lenses can help by maintaining a reservoir of fluid between the lens and the eye, providing continuous moisture and comfort.

  5. Fitting: Fitting scleral lenses requires expertise and may involve multiple visits to an eye care professional who specializes in fitting specialty contact lenses. The fit is customized to each individual's eye shape and condition.

  6. Maintenance: Proper care and maintenance of scleral lenses are essential to prevent infections and ensure long-term comfort and effectiveness. This includes cleaning the lenses daily and following your eye care professional's instructions.

Overall, scleral lenses can provide significant benefits for individuals with complex vision needs or conditions that affect the cornea. If you're considering scleral lenses, it's important to consult with an eye care professional who has experience fitting these lenses to determine if they are suitable for your specific situation.