A bandage lens is a therapeutic contact lens, typically soft, worn over an extended period to protect the cornea during healing.
These specialized contact lenses are not used for vision correction but serve a vital function in eye care. As described in the reference, a bandage lens is a therapeutic contact lens (usually soft). Its primary purpose is to create a protective barrier over the front part of the eye (the cornea), aiding in its recovery process.
Purpose of Bandage Lenses
The main reason an eye doctor might prescribe a bandage lens is for protection during healing. The lens acts like a "bandage" for the eye's surface, helping to:
- Promote Epithelial Healing: Provides a smooth surface for damaged cells to regenerate, reducing friction from blinking eyelids.
- Reduce Pain: Shields exposed nerve endings on the cornea, significantly decreasing discomfort.
- Improve Comfort: Makes the eye more comfortable during the healing period.
- Prevent Infection: Can help protect fragile tissues from external contaminants.
Key Characteristics
Here are some key aspects of bandage lenses:
- Therapeutic Use: Unlike standard lenses, their goal is medical treatment and protection, not vision correction.
- Material: They are usually soft contact lenses, known for their comfort and high oxygen permeability.
- Wear Schedule: Designed for extended periods of time, often worn continuously (day and night) as directed by an eye care professional.
- Placement: Placed directly on the cornea.
When Might a Bandage Lens Be Used?
Bandage lenses are often used after various ophthalmic procedures or injuries, such as:
- Corneal abrasions or erosions
- After corneal surgery (e.g., PRK, corneal transplant)
- Bullous keratopathy
- Recurrent corneal erosions syndrome
In summary, a bandage lens is a specific type of contact lens used for medical purposes to protect and facilitate the healing of the cornea, offering relief from pain and discomfort while worn for an extended duration.
