Changes in the clinical features and prognostic factors of endogenous endophthalmitis: fifteen years of clinical experience in Korea.

PURPOSE: To identify changes in the clinical features, management, and prognostic factors of endogenous endophthalmitis in Korea from 1996 through 2010.
METHODS: We conducted a retrospective review of medical records of patients diagnosed with endogenous endophthalmitis from January 1996 to December 2010, which was divided into 3 periods: 1996 to 2000, 2001 to 2005, and 2006 to 2010. Variables included age, source of infection, systemic conditions, initial and final visual acuities, causative organisms, and treatment.
RESULTS: Endophthalmitis was identified in 80 patients (97 eyes). Diabetes (42.5%) and liver cirrhosis (20%) were the common systemic problems in these patients. Liver abscess (25%) was the most common infection focus of the endophthalmitis. Klebsiella pneumoniae (48.4%) was the common causative agent, although more recently, endophthalmitis caused by gram-positive cocci has increased in frequency. The use of vitrectomy as an initial treatment has increased during the past 5 years. Good initial visual acuity greater than counting fingers (P < 0.001), early vitrectomy in patients with initially good visual presentation (P = 0.035), and gram-positive cocci (P = 0.033) as a causative agent were significantly related to a successful visual outcome.
CONCLUSION: Although the prognosis of endogenous endophthalmitis is generally poor in most patients, some eyes can have relatively good visual outcomes if treated appropriately and early enough.