RESULTS: Identifiable systemic risk factors were present in 79.2%, with the majority related to diabetes mellitus (60.0%). The most common source of bacteremia was urinary tract infection (17.5%). A positive culture from ocular fluid or other body fluids was obtained in 82 patients (68.9%), and the blood was the highest source among all culture-positive results (42.0%). Gram-negative organisms accounted 42 cases (50.6%) of which Klebsiella pneumonia was the most common organism isolated (32.5%). Sixty-nine eyes (48.6%) were managed medically, and 73 eyes (51.4%) underwent vitrectomy. Final visual acuity of counting fingers (CF) or better was achieved in 100 eyes (73.0%). Presenting visual acuity of CF or better was significantly associated with a better final acuity of CF or better (p = 0.001).
CONCLUSIONS: The visual prognosis of endogenous endophthalmitis is often poor, leading to blindness. As expected, gram-negative organisms specifically Klebsiella pneumonia were the most common organisms isolated. Urinary tract infection was the main source of infection. Poor presenting visual acuity was significantly associated with grave visual outcomes. A high index of suspicion, early diagnosis, and treatment are crucial to salvage useful vision.