Bleb-related complications can occur months or years after trabeculectomy, so recognising warning signs is crucial. Prompt treatment helps protect vision and maintain safe pressure.
Possible Complications
Bleb structure and function can change over time.
- Leaky or very thin blebs increase infection risk and may lead to excessively low pressure.
- Encapsulated or scarred blebs can cause pressure to rise again.
- Infection in or around the bleb blebitis or endophthalmitis is a medical emergency.
- Discomfort, foreign‑body sensation, or cosmetic concerns can also develop.
Warning Signs Needing Urgent Review
Certain symptoms should trigger immediate contact with the eye clinic.
- Sudden pain, redness, or marked sensitivity to light in an eye with a bleb.
- Rapid vision loss, new floaters, or a curtain effect.
- Persistent bleb ooze or overlying conjunctival breakdown.
- Any noticeable change in bleb size, colour, or shape, especially with discomfort.
