Scleral lenses are specialized contact lenses used to correct distorted vision caused by one of a variety of conditions of the cornea and provide therapeutic treatment for those with severe ocular surface disease. This guide provides a detailed overview of scleral lenses.
What is a Scleral Lens?
Scleral lenses are large, rigid, gas-permeable contact lenses that rest on the sclera, the white part of the eye. Unlike traditional contact lenses that sit on the cornea, scleral lenses vault over the cornea, creating a tear-filled chamber that enhances comfort and visual acuity.
Benefits of Scleral Lenses
Scleral lenses are effective in correcting refractive errors and improving vision for individuals with irregular corneas, including conditions like keratoconus, ectasia, pellucid marginal degeneration, after corneal transplants, after RK surgery, etc. They can even be used in those with significant amounts of astigmatism. For patients with keratoconus or other irregular corneal conditions comfort and lens stability are a challenge. RGP and other types of contact lenses can rub the cornea causing discomfort or even pop of the eye due to the irregular shape. Scleral lenses solve these issues of comfort and stability as the tear-filled chamber removes corneal contact and reduces friction and irritation as the lens does not come in contact with the cornea. Additionally scleral lenses provide a stable fit due to their size, making them appropriate for individuals with active lifestyles, ensuring consistent vision during activities.
Scleral Lenses and Keratoconus
Keratoconus is a progressive condition where the cornea thins and bulges into a cone shape, causing distorted vision and light sensitivity. Scleral lenses are an effective treatment option for keratoconus, offering improved vision and comfort by vaulting over the irregular cornea, creating a smooth optical surface, and reducing light sensitivity.
Fitting Process for Scleral Lenses
Proper fitting of scleral lenses is essential for optimal vision and comfort. The fitting process involves:
Assessment:
Evaluating the shape and size of your eye and the specific needs of your condition.
Customization:
Scleral lenses are customized for a precise fit. Advanced cases may require wavefront-guided scleral lenses.
Instruction:
Detailed guidance on how to insert, remove, and care for your lenses is provided to ensure eye health and maximize lens benefits.
Scleral Lenses vs. PROSE
PROSE (Prosthetic Replacement of the Ocular Surface Ecosystem) lenses are another type of specialized contact lens for corneal conditions. While both scleral and PROSE lenses serve similar purposes, PROSE devices offer additional medical care and customization. Consultation with an eye care professional is crucial to determine the best option for your needs.
Common Misconceptions about Scleral Lenses
Misconception 1:
Scleral lenses are uncomfortable. In reality, the tear-filled chamber provides cushioning, reducing discomfort.
Misconception 2:
Scleral lenses are only for severe conditions. They are effective for both severe and less severe conditions like astigmatism and dry eyes.
Misconception 3:
Scleral lenses are difficult to care for. With proper instructions, maintaining scleral lenses is straightforward.
Caring for and Maintaining Your Scleral Lenses
Proper care and maintenance are essential for the longevity and performance of scleral lenses:
Daily Cleaning:
Use recommended solutions to clean your lenses daily, removing debris and bacteria.
Proper Storage:
Store lenses in a clean case with appropriate solution when not in use.
Follow Replacement Schedule:
Replace lenses as recommended by your eye care professional to ensure optimal vision and reduce complications.
Regular check-ups with your eye doctor are also important for maintaining the health and performance of your scleral lenses.
Conclusion
Scleral lenses offer an effective solution for various eye conditions, providing clarity and comfort. Understanding their benefits, fitting process, and maintenance tips can help you make an informed decision about incorporating scleral lenses into your life. Schedule a consultation to determine if scleral lenses are right for you.
