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Updated: Mar 7, 2026

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Published on: March 7, 2025
Hemorrhagic occlusive retinal vasculitis after inadvertent intraocular perforation with gentamycin injection
Lea Querques1, Elisabetta Miserocchi1, Giulio Modorati1
1Department of Ophthalmology, IRCCS Ospedale San Raffaele, University Vita-Salute, Milan - Italy.
Purpose:
To report a case of hemorrhagic occlusive retinal vasculitis (HORV) secondary to intraocular toxicity due to inadvertent intraocular injection of gentamycin.
Methods:
A 21-year-old woman was referred to our department because of severe ocular pain and sudden visual loss in her left eye after she received a subconjunctival gentamycin injection for chronic infectious keratitis.
Results:
At presentation, best-corrected visual acuity was 20/20 in the right eye and counting fingers in the left eye. Fundus examination showed diffuse intraretinal and perivascular hemorrhages, vascular cuffing, white-centered hemorrhages, and diffuse retinal edema. Fluorescein angiography confirmed occlusive retinal vasculitis with capillary nonperfusion and spectral-domain optical coherence tomography revealed ischemic macular edema. The clinical diagnosis was compatible with HORV secondary to retinal toxicity due to high dose of intraocular gentamycin.
Conclusions:
We report a case of HORV secondary to inadvertent subconjunctival gentamycin injection. Ocular perforation and high dose of intravitreal gentamycin administration should be considered as a potential cause of HORV following subconjunctival injection.
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