Scleral Lenses: What They Are, Who Needs Them, and How They Help Vision

When your cornea is misshapen or too dry for regular contacts, scleral lenses, large, gas-permeable contact lenses that rest on the white of the eye (sclera) and vault over the cornea. Also known as scleral contact lenses, they create a smooth optical surface that replaces the irregular shape of the cornea, letting light focus properly on the retina. Unlike standard contacts that sit directly on the cornea, scleral lenses float on a reservoir of saline, keeping the eye moist and protected — a game-changer for people with chronic dry eye or corneal damage.

These lenses are often prescribed for keratoconus, a condition where the cornea thins and bulges into a cone shape, causing blurry, distorted vision. They’re also used for people recovering from corneal transplants, those with severe dry eye syndrome, or anyone who can’t wear regular contacts because of pain or poor fit. The design means they don’t touch the sensitive cornea — reducing irritation and improving comfort. For many, they’re the only way to get clear vision without surgery.

They’re not for everyone. Fitting them requires specialized training and multiple visits to get the curve, size, and thickness just right. But once they’re dialed in, users report fewer headaches, less redness, and more hours of wearable vision. They’re also used by athletes, pilots, and others who need stable, high-quality vision in challenging conditions.

While they cost more than regular contacts, many insurance plans cover them when prescribed for medical reasons like keratoconus or severe dry eye. The key is finding a provider who knows how to fit them properly — not every optometrist does. If you’ve been told you can’t wear contacts, or if your current ones burn or slip constantly, scleral lenses might be the solution you’ve been missing.

Below, you’ll find real-world guides on how they’re fitted, how they compare to other vision solutions, and what to expect if you’re considering them — all based on actual patient experiences and clinical insights.