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Updated: May 21, 2026

Intravitreal Injection and Quantitation of Infection Parameters in a Mouse Model of Bacterial Endophthalmitis
Published on: February 6, 2021
Enterobacter amnigenus endophthalmitis
Corey Westerfeld1, George N Papaliodis, Irmgard Behlau
1From the *Department of Ophthalmology, Massachusetts Eye and Ear Infirmary; and †Department of Infectious Diseases, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts.
Purpose:
To describe a case of Enterobacter amnigenus endophthalmitis.
Methods:
A 33-year-old, previously healthy man presented with unilateral hypopyon uveitis. Visual acuity in the affected eye was counting fingers. Initial laboratory workup was negative. Vitreous cultures revealed the offending agent.
Results:
The patient was treated with intravenous and intravitreal antibiotics and responded well. Final visual acuity was 20/30.
Conclusion:
Enterobacter species have been rarely reported as causes of endophthalmitis. E. amnigenus is almost never pathogenic in humans and previous cases have been described in immunocompromised individuals. Our case demonstrates that appropriate treatment of E. amnigenus endophthalmitis in an immunocompetent individual can result in a good visual outcome.
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