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Updated: Aug 25, 2026

Intravitreal Injection and Quantitation of Infection Parameters in a Mouse Model of Bacterial Endophthalmitis
Published on: February 6, 2021
Listeria monocytogenes-induced endogenous endophthalmitis: bioultrasonic findings
Carmen Mendez-Hernandez1, Julian Garcia-Feijoo, Julian Garcia-Sanchez
1Instituto de Investigaciones Oftalmologicas Ramón Castro viejo, Glaucoma Department, Hospital Clinico San Carlos, Guadalajara, Spain. cmendez@iies.es
Purpose:
To report bioultrasonic findings in Listeria monocytogenes-induced endophthalmitis (LMIE) that have not been described previously.
Design:
Interventional case report.
Methods:
To rule out intraocular tumor, ultrasound biomicroscopy was performed in a patient referred for a 2-day history of uveitis with elevated intraocular pressure, dark hypopyon, and pigment dispersion in the anterior chamber.
Results:
Ultrasound biomicroscopy examination showed increased iris thickness with rarefaction of tissue and irregular echogenicity as well as iris pigment epithelial detachment. A small choroidal detachment was also detected. The anterior chamber and vitreous sample confirmed the LMIE diagnosis.
Conclusions:
The detection of both pigment epithelial detachment and changes in the iris tissue could explain why black hypopyon frequently develops in LMIE with significant pigment dispersion in some cases.

