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Published on: February 6, 2021
Fungal endophthalmitis caused by Aspergillus ustus in a patient following cataract surgery
Sinasi Taner Yildiran1, Fatih Mehmet Mutlu, Mehmet Ali Saracli
1Division of Medical Mycology, Department of Microbiology and Clinical Microbiology, Gulhane Military Medical Academy and School of Medicine, Ankara, Turkey. sinasit@gata.edu.tr
Abstract:
The first case of postoperative endophthalmitis after cataract surgery caused by Aspergillus ustus, a species that has only rarely been implicated in human disease, is described. Six weeks after cataract surgery, a 67-year-old medically controlled diabetic patient presented with uveitis, mild ciliary injection and ocular discomfort. Anterior chamber paracentesis, vitreous tap and finally complete vitrectomy with removal of the capsular bag including the intraocular lens were performed and several sets of culture yielded A. ustus. Despite vigorous systemic (itraconazole and caspofungin) and intravitreal (amphotericin B and caspofungin) antifungal therapy, the endophthalmitis did not improve. The painful eye with marked inflammation was finally enucleated. In vitro susceptibility testing of the isolate showed that it appeared resistant to amphotericin B, caspofungin, itraconazole, voriconazole, and posaconazole, and susceptible to terbinafine.
Insights
A rare Aspergillus ustus fungal infection caused severe endophthalmitis after cataract surgery. Despite aggressive antifungal treatment, the patient
Area of Science:
- Ophthalmology
- Mycology
- Infectious Diseases
Background:
- Postoperative endophthalmitis is a serious complication following cataract surgery.
- Fungal endophthalmitis, though less common than bacterial, presents significant treatment challenges.
Observation:
- A 67-year-old diabetic patient developed uveitis six weeks post-cataract surgery.
- Clinical signs included ciliary injection and ocular discomfort, progressing despite interventions.
Findings:
- Cultures confirmed Aspergillus ustus, a rarely pathogenic fungus, as the causative agent.
- The infection was refractory to systemic and intravitreal antifungal therapies, including amphotericin B and caspofungin.
- In vitro testing revealed resistance to multiple antifungals, with terbinafine susceptibility.
Implications:
- This case highlights the potential for rare fungal species to cause severe postoperative endophthalmitis.
- Treatment strategies for resistant fungal endophthalmitis may require novel approaches.
- Understanding antifungal susceptibility patterns is crucial for managing refractory cases.
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