Treatment of endogenous fungal endophthalmitis: focus on new antifungal agents
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Updated: Jun 5, 2026

Intravitreal Injection and Quantitation of Infection Parameters in a Mouse Model of Bacterial Endophthalmitis
Published on: February 6, 2021
James Riddell1, Grant M Comer, Carol A Kauffman
1Department of Internal Medicine, Division of Infectious Diseases, University of Michigan Medical School, Ann Arbor, Michigan, USA.
Abstract:
Endogenous fungal endophthalmitis, involving only the chorioretinal structures or extending to involve the vitreous (vitritis), is a sight-threatening infection requiring early appropriate therapy. Endophthalmitis is a relatively frequent complication of candidemia and less commonly occurs in patients who have invasive aspergillosis. Because the eye is a protected compartment, penetration of systemically administered antifungal agents is highly variable. In the posterior segment of the eye, amphotericin B (AmB) achieves very poor concentrations, but fluconazole concentrations are high. Among newer antifungal agents, voriconazole shows the most promise, because therapeutic concentrations for most Candida and Aspergillus species are achieved in the vitreous, and its antifungal activity is broad. In contrast, neither posaconazole nor the 3 echinocandins achieve adequate therapeutic concentrations in the vitreous. For sight-threatening macular involvement and vitritis, intravitreal injection of either AmB or voriconazole is helpful to achieve high local antifungal activity as quickly as possible. We review the available evidence regarding the most appropriate use of antifungal agents for endogenous fungal endophthalmitis, with the emphasis on treatment of infections due to Candida species.
Insights
Treating endogenous fungal endophthalmitis requires careful antifungal selection. Voriconazole and intravitreal injections offer promising therapeutic concentrations for sight-threatening infections, especially those caused by Candida species.
Area of Science:
- Ophthalmology
- Mycology
- Infectious Diseases
Background:
- Endogenous fungal endophthalmitis is a severe ocular infection compromising vision.
- Commonly associated with candidemia and invasive aspergillosis.
- Systemic antifungal penetration into the eye is variable, complicating treatment.
Purpose of the Study:
- To review evidence on optimal antifungal agent use for endogenous fungal endophthalmitis.
- To emphasize treatment strategies for Candida species infections.
- To evaluate antifungal concentrations in the posterior segment of the eye.
Main Methods:
- Review of available scientific evidence.
- Analysis of pharmacokinetic data for antifungal agents in the vitreous.
- Focus on clinical efficacy for fungal endophthalmitis.
Main Results:
- Systemic amphotericin B (AmB) has poor ocular penetration; fluconazole has high concentrations.
- Voriconazole demonstrates promising therapeutic vitreous concentrations against Candida and Aspergillus.
- Posaconazole and echinocandins do not achieve adequate vitreous concentrations.
Conclusions:
- Voriconazole shows potential for treating fungal endophthalmitis due to its broad spectrum and vitreous penetration.
- Intravitreal AmB or voriconazole injections are crucial for rapid, high-dose local therapy in severe cases.
- Antifungal selection must consider ocular penetration and specific fungal pathogens, particularly Candida species.
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