If your eye doctor has mentioned scleral lenses — or if standard contacts have never felt right on your eyes — you probably have questions. Scleral lenses look and behave differently from any contact lens you've worn before, and understanding why is the key to understanding how they can transform your vision.
The basic idea
A scleral lens is a large-diameter, rigid gas-permeable (RGP) contact lens. Instead of resting directly on the cornea the way a normal contact does, it arches completely over the cornea and lands gently on the sclera — the white part of your eye. That single design difference changes everything about how the lens feels and performs.
Because the lens never touches your sensitive cornea, the space underneath fills with sterile saline. That creates a smooth, liquid-filled reservoir that bathes the front of your eye all day long. Light passes through this perfectly smooth optical surface, which is why scleral lenses can produce remarkably crisp vision even on eyes that glasses and soft lenses can't correct.
Why the size matters
Standard soft contacts are roughly 14 mm across. Scleral lenses are larger — anywhere from about 14.5 mm up to 24 mm — depending on the design. That extra size lets the lens skip past corneal irregularities entirely and anchor on the more forgiving white of the eye. The result is a lens that stays stable, doesn't pop out easily, and rarely traps the dust or debris that irritates other lens wearers.
Who scleral lenses help most
Scleral lenses were originally reserved for the toughest cases, but their comfort has made them popular for a wide range of patients, including people with:
- Keratoconus and other irregular corneas
- Severe or chronic dry eye that doesn't respond to drops
- Post-surgical eyes (after LASIK, corneal transplant, or RK)
- High or hard-to-correct prescriptions
- Discomfort or intolerance with soft or standard RGP lenses
What wearing them is actually like
You fill the bowl of the lens with preservative-free saline, apply it to your eye, and wear it through the day. Most people describe the vision as sharp and the feeling as surprisingly comfortable — often more comfortable than the smaller lenses they wore before, because there's no lens edge moving across the cornea with every blink.
The bottom line
Scleral lenses are a specialty solution, and getting them right requires an experienced fitter and advanced measurements of your eye. At Clearview Family Eyecare in Memphis, Dr. Salley fits scleral lenses for patients across Germantown, Collierville, Bartlett, and the greater Mid-South — including many who were told they weren't candidates for contacts at all.
Curious whether scleral lenses could work for you? Request a scleral lens consultation and let's take a look.