A bleb is a blister-like structure that forms on the surface of the eye, typically as a result of a surgical procedure, such as trabeculectomy. In the context of glaucoma surgery, a bleb is a fluid-filled reservoir that forms under the conjunctiva, allowing excess fluid to drain from the eye and reducing intraocular pressure.
Characteristics of a bleb:
- Fluid-filled
- Located under the conjunctiva
- Can be diffuse or localized
- May be elevated or flat
The presence and characteristics of a bleb can indicate the success of the surgery and the effectiveness of IOP reduction.