What to Expect With Scleral Contact Fitting and Contact Lens
What are scleral lenses?
Scleral lenses are large diameter rigid gas permeable lenses that range from 14 mm to over 20 mm in diameter. They are termed “scleral” lenses because scleral lenses completely cover the cornea (the clear dome of tissue that covers the iris of the eye) and extend onto the sclera (the white part of the eye that forms the outer wall of the eye).
Who could potentially benefit from scleral lenses?
Patients with irregular corneas, patients with conditions that affect the tear film, and patients with refractive error (nearsightedness, farsightedness, astigmatism and presbyopia) who are unable to wear other forms of correction could benefit from scleral lenses.
Conditions such as keratoconus and pellucid marginal corneal degeneration cause irregularity of the cornea. If the cornea is not smooth, vision will not be easily correctable with spectacles or most soft contact lenses. Scleral lenses mask this irregularity and allow for improved vision by providing a smooth front surface. Patients with severe dry eye syndrome or corneal scarring may also benefit.
Lens care and solutions
Preservative Free Saline solutions
- Examples include PurilLens Plus Saline, Addipak sterile solution packs, and LacriPure saline solution.
- Used for filling lens and rinsing off lens
- Not used for cleaning, storing, or disinfecting
CLEAR CARE® Solution
- Hydrogen peroxide based solutions such as CLEAR CARE® are recommended for cleaning and storing the scleral lenses.
- Lenses must sit in the case with solution for a mimimum of 6 hours for the solution to neutralize
- Used for cleaning, storing, and disinfecting lenses
- Not used for rinsing or filling lenses.
Rules for Scleral contact lens wear
- Only wear lenses when your eyes are white and not irritated. Do not wear the lenses when you have red eyes or think you may have an infection. Take the lenses out if you eye becomes red and irritated.
- No sleeping is permitted while wearing the lenses. Take them out every night, and take them out if you are going to take a nap.
- Always wash your hands before removing or inserting contact lenses.
- Prescription eye drops may not be used over the contact lens. If feeling dry you may use Refresh Tears® or Blink contacts® lubricating eye drops as needed.
How to insert and remove scleral lenses: https://www.youtube.com/watch?v=P0xO9bZsTnU
Valley Contax website: http://customstablelens.com/
CLEAR CARE® instructions on how to use: https://www.clearcaresolution.com/how-to-clean-contacts.shtml