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Updated: Sep 15, 2025

Intravitreal Injection and Quantitation of Infection Parameters in a Mouse Model of Bacterial Endophthalmitis
Published on: February 6, 2021
Intraocular tissue plasminogen activator during vitrectomy in the management of acute severe bacterial
Monia A Reding1, Prethy Rao1,2,3, Emmanuel Y Chang1,2,3
1Department of Ophthalmology, Baylor College of Medicine, Houston, TX.
Purpose:
To describe a novel off-label use of tissue plasminogen activator (tPA) in the setting of severe endophthalmitis for improved surgical outcomes during pars plana vitrectomy.
Methods:
After a limited core vitrectomy is completed, 50mcg/0.1ml tPA is administered intravitreally and allowed to take effect with a 15-minute lights-out period. A fluid-fluid exchange is then carried out to lavage the inflammatory debris and tPA from the posterior segment.
Results:
This technique allows for significantly improved surgical visualization and complete removal of inflammatory debris in the anterior and posterior segment.
Conclusion:
Increased clearance of intraocular inflammatory debris may reduce post-infection inflammatory sequalae such as posterior synechiae and preretinal membranes and achieve better surgical outcomes.
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