title: Bilateral endogenous endophthalmitis caused by HACEK microorganism.
abstract: OBJECTIVE
  To report a case of bilateral endogenous endophthalmitis caused by a HACEK group organism (Actinobacillus actinomycetemcomitans).
  
  
  METHODS
  An 85-year-old Caucasian female presented with bilateral light perception visual acuity, anterior chamber cells, hypopyon, posterior synechiae, and no red reflex.
  
  
  RESULTS
  The patient underwent bilateral vitrectomy, with topical, intravitreal, and systemic antibiotics. Vitreous cultures revealed gram-negative cocco bacilli consistent with Actinobacillus actinomycetemcomitans. At final follow-up, visual acuity was 20/25 RE and 20/40 LE.
  
  
  CONCLUSIONS
  Prompt diagnosis and treatment of HACEK [Hemophilus sp. (parainfluenzae, aphrophilus, paraphrophilus), Actinobacillus actinomycetemcomitans, Cardiobacterium hominis, Eikenella corodens, and Kingella kingae] group bacterial endophthalmitis can yield good results.
authors.affiliation: Cole Eye Institute, Cleveland Clinic Foundation, Cleveland, Ohio 44195, USA.
authors.forename: Preston
authors.initials: P
authors.lastname: Sullivan
authors.forename: William L
authors.initials: WL
authors.lastname: Clark
authors.forename: Peter K
authors.initials: PK
authors.lastname: Kaiser
mesh_terms: D000189:Actinobacillus Infections / Q000175:diagnosis / Q000382:microbiology* / Q000628:therapy; D000368:Aged; D000369:Aged, 80 and over; D016976:Aggregatibacter actinomycetemcomitans / Q000302:isolation & purification*; D000900:Anti-Bacterial Agents; 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; D005260:Female; D006801:Humans; D014792:Visual Acuity; D014821:Vitrectomy; D014822:Vitreous Body / Q000382:microbiology
chemical_list: D000900:Anti-Bacterial Agents