Protective scleral lenses are common
Not everyone wears scleral lenses mainly to see better. For severe dry eye and other eye surface conditions, the main job of the lens is to keep the cornea bathed in fluid and shielded from the lids and air. People in that situation often see reasonably well in glasses, so asking for a lens that only protects makes sense.
Why “no prescription” isn’t quite possible
A scleral lens vaults over your cornea with a layer of fluid underneath. Optically, the smooth front of the lens takes over from the front of your cornea. A 2025 review describes how, by vaulting the cornea and resting on the white of the eye, scleral lenses neutralize the cornea’s astigmatism.[1]
That’s a big advantage for people with an irregular cornea. But it also means a scleral lens is never a neutral window. Put on a lens with no power built in, and your eye’s focus still changes, because the cornea’s own shape is no longer doing the same work. Wearers often hear this from their fitters: there’s no truly “plain” scleral lens. The lens power has to be chosen with that in mind.
It also means your usual glasses may not be right over the lens. Glasses made for your bare eye correct your cornea’s shape, and with a scleral lens on, that shape is largely masked. A glasses prescription for wearing over sclerals should be measured with the lenses in.
Ways to split the job between lens and glasses
| Setup | How it works | Trade-offs |
|---|---|---|
| Distance in the lens, readers or progressives over it | The lens gives clear distance vision; glasses handle near or in-between | The most common setup; you need glasses for close work |
| Lens power kept low, glasses for most correction | The lens mainly protects; glasses do the rest | Glasses must be made for wearing over the lens; the lens still needs a set power |
| Monovision | One lens set for distance, the other for near | Not everyone adapts to it |
| Glasses for fine-tuning | Small leftover correction, such as some astigmatism, goes in glasses over the lens | Useful when the lens can’t fully correct it |
For near vision options, see are there multifocal scleral lenses? For wearing glasses with your lenses, see can you wear glasses over scleral lenses?
What wearers say
Wearers who asked for “plain” lenses for dry eye often found their vision was off at first, and learned that the lens still needed a power. Once the power was set, many were happy with distance vision in the lens and readers or progressives on top. A few chose to keep most correction in glasses and wear the lenses mainly for comfort, and that worked for them, with glasses made to go over the lenses.
Others went the other way: they found their vision with corrected scleral lenses was sharper than in glasses, and preferred to put the correction in the lens and wear plain or reading frames over it. Some also like glasses over their lenses for another reason: they block wind and air conditioning that can dry the front of the lens.
What to ask your fitter
- “Since I’m wearing these mainly for protection, what power do you plan to put in the lens, and why?”
- “Will I need new glasses to wear over the lenses, and who measures them?”
- “Would distance in the lens with readers, or monovision, suit me better?”
- “If my vision isn’t right with the new lenses, how do we adjust it?”
When it’s not normal
Protective lenses still carry the usual risks of contact lens wear.
Common questions
My vision is worse with my 'protective' scleral lenses than without them. Why?
Because the lens changes your eye's optics, it usually needs a power set to match. Early lenses in a fitting are often slightly off, and your fitter refines the power with an over-refraction. Tell your fitter; it's usually fixable.
Can I wear my regular glasses over my scleral lenses?
Probably not as they are. With a scleral lens on, your eye needs a different correction than without one. Ask your eye doctor to measure a glasses prescription with your lenses in if you plan to wear glasses over them.
Do people wear reading glasses over scleral lenses?
Yes, it's very common. Many wearers have their lenses set for distance and use readers or progressive glasses over them for close work. See our page on multifocal scleral lenses for other options.
I had cataract surgery and now see well in the distance. Can my sclerals be plain for dry eye?
Some wearers in that situation wear lenses mainly for dry eye with glasses for near. Your lens will still need a power set to suit your new eye, so expect your fitter to recheck and likely reorder.