Treatment of endogenous fungal endophthalmitis: focus on new antifungal agents

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.

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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