title: Optic disk edema as a presentation of Propionibacterium acnes endophthalmitis.
abstract: OBJECTIVE
  To report a patient with an initial presentation of optic disk edema secondary to Propionibacterium acnes endophthalmitis.
  
  
  METHODS
  Interventional case report. The patient had surgery and treatment related to endophthalmitis. Nine months after cataract surgery with posterior chamber lens implant, a 79-year-old man receiving topical corticosteroids in the same eye presented with best-corrected visual acuity of 20/60, a superior visual field defect, and optic nerve edema without intraocular inflammation. One year postoperatively, the eye presented a further decrease in best-corrected visual acuity, and a dense white plaque was noted on the posterior capsule.
  
  
  RESULTS
  One year postoperatively, a partial capsulectomy with vitrectomy and injection of intravitreal antibiotics was performed. Hematoxylin and eosin stain of the posterior capsule plaque revealed gram-positive coccobacilli characteristic of P. acnes.
  
  
  CONCLUSIONS
  Propionibacterium acnes endophthalmitis may present after cataract surgery with intraocular lens implant with decreased vision, optic disk edema, and a visual field defect.
authors.affiliation: Department of Ophthalmology, University of Colorado Health Sciences Center, Denver 80262, USA. gregory.kouyoumdjian@uchsc.edu
authors.forename: G A
authors.initials: GA
authors.lastname: Kouyoumdjian
authors.forename: T P
authors.initials: TP
authors.lastname: Larkin
authors.forename: P J
authors.initials: PJ
authors.lastname: Blackburn
authors.forename: N
authors.initials: N
authors.lastname: Mandava
mesh_terms: D000368:Aged; D000900:Anti-Bacterial Agents; D003131:Combined Modality Therapy; D004359:Drug Therapy, Combination / Q000627:therapeutic use; D009877:Endophthalmitis / Q000175:diagnosis* / Q000382:microbiology / Q000628:therapy; D015818:Eye Infections, Bacterial / Q000175:diagnosis* / Q000382:microbiology / Q000628:therapy; D016908:Gram-Positive Bacterial Infections / Q000175:diagnosis* / Q000382:microbiology / Q000628:therapy; D006801:Humans; D007903:Lens Capsule, Crystalline / Q000382:microbiology; D019654:Lens Implantation, Intraocular / Q000009:adverse effects; D008297:Male; D010211:Papilledema / Q000175:diagnosis* / Q000382:microbiology; D018918:Phacoemulsification / Q000009:adverse effects; D011425:Propionibacterium acnes / Q000302:isolation & purification*; D014792:Visual Acuity; D014821:Vitrectomy
chemical_list: D000900:Anti-Bacterial Agents