What Is a Bandage Contact Lens?
A bandage contact lens (BCL) is a therapeutic soft contact lens applied to the eye to protect the cornea and promote healing. Unlike standard contact lenses, BCLs are not prescribed for vision correction. They typically have plano power (no refractive correction) and serve as a physical barrier between the damaged corneal surface and the external environment, particularly the blinking eyelid.
How Bandage Lenses Work
The BCL provides several therapeutic functions simultaneously:
- Pain reduction: The lid passes over the smooth lens surface rather than dragging across the damaged epithelium with each blink, dramatically reducing pain
- Mechanical protection: Shields the cornea from lid friction, foreign bodies, and environmental exposure
- Healing environment: Creates a stable, protected space where epithelial cells can migrate and regenerate without disruption
- Moisture retention: Helps maintain tear film contact with the corneal surface
Common Indications
Corneal Abrasions
Large or painful corneal abrasions benefit from BCL application. The lens reduces pain immediately and allows the epithelium to heal under protection.
Recurrent Corneal Erosion (RCE)
Patients with RCE experience repeated spontaneous epithelial breakdown, often upon waking. A BCL worn continuously for several weeks allows the epithelium to re-establish firm adhesion to the underlying basement membrane.
Post-Surgical Protection
- After PRK: The most common use. A BCL is placed at the end of surgery and worn until the epithelium regenerates (typically 3-5 days)
- After corneal crosslinking: Protects the de-epithelialized cornea
- After pterygium removal: Shields the healing tissue
Other Conditions
- Filamentary keratitis: Prevents filament attachment to the corneal surface
- Bullous keratopathy: Covers ruptured epithelial bullae to reduce pain
- Chemical burns: Protects healing epithelium after acute chemical injury
Lens Selection
BCLs should be selected for biocompatibility and oxygen permeability:
- High Dk/t material: Since BCLs are often worn continuously (including overnight), high oxygen transmissibility is essential to prevent hypoxic complications on an already compromised cornea
- Silicone hydrogel preferred: Modern BCLs are typically silicone hydrogel for superior oxygen delivery
- Plano power: No refractive correction needed
- Appropriate diameter: Should cover the entire cornea with stable centration
Critical Safety Considerations
- Antibiotic prophylaxis: Always prescribe topical antibiotics when a BCL is in place over a damaged cornea. The compromised epithelium is vulnerable to infection, and the lens can trap organisms against the surface
- Close follow-up: Monitor every 1-3 days to assess healing and watch for signs of infection
- Patient education: Instruct the patient not to remove the BCL unless instructed. Premature removal disrupts healing
- Remove promptly when healed: Leaving a BCL in place after the epithelium has healed exposes the patient to unnecessary infection risk from extended wear
Key Takeaways
- Bandage contact lenses protect the cornea and reduce pain but do not correct vision
- Primary indications include corneal abrasions, recurrent erosions, and post-surgical healing (especially PRK)
- High-Dk silicone hydrogel materials are preferred due to continuous wear requirements
- Antibiotic prophylaxis is mandatory when a BCL covers a compromised corneal surface
- Close follow-up every 1-3 days is essential to monitor healing and detect early infection
- Remove the BCL promptly once healing is complete