Fig. 9. Bleb-associated endophthalmitis occurring two years following glaucoma filtering surgery. Left: Marked purulence of the bleb, hypopyon, and fibrin in the pupil. Visual acuity was reduced to hand motion. The patient was treated with a vitreous tap and injected with intravitreal antibiotics. Right: Coagulase-negative staphylococcus was isolated from the vitreous. Final visual acuity was 20/400 because advanced glaucomatous disease limited visual recovery.