A dressing, not a correction
Every other lens on this site exists to change how light enters the eye. A bandage lens exists to cover something.
The cornea’s outer layer, the epithelium, is a sheet of cells a few layers thick. When it is scraped off, blistered or failing to close, two things happen: it hurts badly, because the exposed nerve endings are among the densest in the body, and the eyelid’s movement across the raw surface keeps disrupting the cells trying to migrate across and close the gap.
A soft lens laid over the defect solves both at once. The lid now slides across the lens. The healing surface underneath is left undisturbed. Pain relief is often immediate.
The lens is typically a silicone hydrogel with high oxygen transmission, because it will be worn continuously, including while you sleep, and a cornea under stress needs all the oxygen it can get.
What they are used for
- Corneal abrasion, particularly larger ones, where protection speeds comfort and healing.
- Recurrent corneal erosion, where the epithelium repeatedly fails to adhere and tears loose — classically on waking.
- Persistent epithelial defects that are not closing on their own.
- After surface refractive surgery such as PRK, where the epithelium is deliberately removed and takes days to regrow.
- After other ocular surgery or corneal procedures, including some cross-linking protocols.
- Bullous keratopathy, where corneal swelling produces painful surface blisters.
- Protecting the cornea from the lids themselves — in-turning lashes, exposure where the lids do not close fully.
- Sealing a small corneal perforation or leak temporarily, alongside definitive treatment.
Why these lenses carry more risk than any other
This is the part to take seriously, and the reason a bandage lens is a prescription rather than a purchase.
Two risk factors are being stacked deliberately:
- The corneal surface is already breached. The epithelium is the eye’s main barrier to infection, and it is the thing that is damaged.
- The lens is worn continuously, including overnight, which raises infection risk for any lens on any eye.
Put together, that is the highest-risk configuration in contact lens practice, and it is accepted because the benefit of protecting the surface outweighs it under supervision. The supervision is the part that makes the trade work.
Get seen the same day if, while wearing a bandage lens, you develop: increasing pain rather than decreasing, new or worsening redness, discharge, a white spot on the cornea, worsening light sensitivity, or a drop in vision.
How they are managed
- Prescribed for a defined indication, usually with antibiotic cover while the surface is open.
- Fitted for the eye — too tight and it restricts tear exchange, too loose and it moves across the healing defect it is meant to protect.
- Left in place continuously. You are usually told not to remove it yourself, because taking the lens out can strip the new epithelium with it.
- Reviewed on a schedule — often within the first day or two, then at intervals until the surface has closed.
- Removed by the clinician, and replaced with a fresh lens if protection is still needed.
Questions worth asking
- How long do you expect this lens to stay in?
- Am I on an antibiotic alongside it, and for how long?
- When exactly is my next review?
- What should I do if it falls out?
- Which symptoms mean I call you today rather than wait?