Question 1

What are scleral lenses and who needs them?

Accepted Answer

Scleral lenses are large-diameter gas-permeable contact lenses that vault completely over the cornea and rest on the white (sclera) of the eye. They are filled with a saline reservoir that keeps the corneal surface constantly hydrated. They are primarily used for keratoconus, irregular corneas, severe dry eye, and post-LASIK complications.

Question 2

What conditions are treated with scleral lenses?

Accepted Answer

Scleral lenses are prescribed for keratoconus, pellucid marginal degeneration, irregular corneas after refractive surgery, Stevens-Johnson syndrome, severe dry eye disease, corneal scarring, and graft-versus-host disease affecting the eyes. They provide crisp vision and comfort where standard lenses fail.

Question 3

How long does a scleral lens fitting take?

Accepted Answer

Scleral lens fitting is a multi-visit process. An initial consultation and fitting typically takes 1–2 hours, including corneal topography mapping and trial lens assessment. Follow-up visits (usually 2–4) refine the fit. Total fitting time is 1–3 months depending on the complexity of your cornea.

Question 4

Are scleral lenses covered by insurance in Canada?

Accepted Answer

Scleral lenses are considered specialty medical devices. Some provincial health plans or supplemental insurance plans may provide partial coverage for conditions like keratoconus. Expect costs of $2,000–4,000+ per pair for a complete fit. Ask your insurer and optometrist about coverage options before proceeding.

Question 5

How are scleral lenses different from regular contact lenses?

Accepted Answer

Standard soft lenses rest on and conform to the cornea. Scleral lenses are rigid, large (typically 14.5–24mm), and vault over the cornea entirely, creating a liquid reservoir between the lens and the eye. This eliminates direct contact with the irregular corneal surface, providing both superior optics and exceptional comfort.

Scleral Lens Clinics in Canada

Clinics