Endophthalmitis after pars plana vitrectomy. The Postvitrectomy Endophthalmitis Study Group

Ophthalmology. 1995 May;102(5):705-12. doi: 10.1016/s0161-6420(95)30965-7.


Purpose: To describe the clinical course and incidence of culture-proven postvitrectomy endophthalmitis in 18 patients from five academic centers and three private practices.

Methods: Patients undergoing pars plana vitrectomy for recent trauma or endophthalmitis were excluded. The average age was 58 years (range, 21-85 year). Sixty-one percent of the patients (11/18) had diabetes mellitus. The indication for initial vitrectomy was vitreous hemorrhage (n = 10), macular epiretinal membrane (n = 3), recurrent retinal detachment with proliferative vitreoretinopathy (n = 2), retinal detachment with retinoschisis (n = 1), proliferative diabetic retinopathy with tractional retinal detachment (n = 1), and dislocated intraocular lens (n = 1). None of these eyes received prophylactic intraocular antibiotics during the vitrectomy.

Results: All eyes were treated with intraocular antibiotics after the diagnosis of postvitrectomy endophthalmitis was made. Final visual acuity ranged from 20/20 to no light perception and included five eyes with 20/50 or better visual acuity and 11 eyes with less than 5/200 visual acuity. Nine eyes had a final visual acuity of no light perception. Of the 16 eyes infected with a single organism, 71% (5/7) of eyes infected with coagulase-negative staphylococci retained 20/50 or better final visual acuity compared with no eyes (0/9) infected with other organisms (P = 0.005). Two eyes infected with both coagulase-negative Staphylococcus and Streptococcus had a final visual acuity of 20/400. Three eyes with a total hypopyon later had enucleation or evisceration. Based on the data from four medical centers, the incidence of endophthalmitis after pars plana vitrectomy performed over the last 10 years was 9/12,216 (0.07%).

Conclusion: Endophthalmitis after vitrectomy is rare. Postvitrectomy bacterial endophthalmitis caused by organisms other than coagulase-negative staphylococci has a poor visual prognosis.

Publication types

  • Multicenter Study
  • Review

MeSH terms

  • Adult
  • Aged
  • Aged, 80 and over
  • Anti-Bacterial Agents / therapeutic use
  • Bacteria / isolation & purification
  • Endophthalmitis / drug therapy
  • Endophthalmitis / microbiology*
  • Endophthalmitis / pathology
  • Eye Diseases / surgery
  • Eye Infections, Bacterial / drug therapy
  • Eye Infections, Bacterial / etiology*
  • Eye Infections, Bacterial / pathology
  • Female
  • Humans
  • Incidence
  • Male
  • Middle Aged
  • Treatment Outcome
  • Visual Acuity
  • Vitrectomy / adverse effects*
  • Vitreous Body / drug effects
  • Vitreous Body / microbiology


  • Anti-Bacterial Agents