Overhanging Bleb

Overhanging Bleb
  • May result from the effect of continuous lid movement.
  • More likely associated with an unguarded "full-thickness" filtration procedure.

Clinical Features

  • Symptoms: may be asymptomatic or report symptoms of foreign body sensation, tearing, decreased vision, or a cosmetic problem.
  • Signs:
    • Large bleb gradually extends downward and covers the peripheral cornea
    • May result in adjacent cornea drying and dellen formation


  • Artificial tears.
  • Surgical excision of the corneal portion of the bleb may be required in an advance case
Overhanging Bleb