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Acremonium keratitis: Risk factors, clinical characteristics, management, and outcome in 65 cases
Smruti Rekha Priyadarshini1, Tanvi Soni1, Srikant Kumar Sahu1
1Cornea and Anterior Segment Service, L V Prasad Eye Institute, Bhubaneswar, Odisha, India.
Purpose:
To study the risk factors, clinical presentation, management options, and outcomes in cases of culture-proven Acremonium keratitis.
Methods:
Medical and microbiology records of culture-proven Acremonium keratitis from Jan 2007 to Dec 2019 at a tertiary eye care center were reviewed. Details of clinical findings on each visit and operating notes were reviewed from the medical records. All cases were subjected to corneal scraping at the first visit for microbiological investigation consisting of direct smear examination and culture. Topical natamycin 5% was the mainstay of medical treatment. Surgical treatment was considered for nonresponding patients.
Results:
During the 13-year study period, 65 cases of culture-proven Acremonium keratitis were identified out of 1605 cases of fungal keratitis. Trauma was the most common predisposing factor in 32 cases (49.2%). The average area of the corneal stromal infiltrate was 24.8 mm2 at the initial presentation. Hypopyon at the time of presentation was evident in 28 (43.1%) cases. Staphylococcus spp. was the most common (n = 22, 33.8%) organism coexistent with Acremonium. Direct microscopy of corneal scraping was positive for fungal filaments in 57/65 (87.6%) cases. Medical management alone was given in 44 patients (67.6%). Age (>50 years) and treatment delay (>15 days) were found to be independent risk factors for the poor final visual outcome (VA <20/60).
Conclusion:
When treated early, Acremonium keratitis responds well to medical therapy with currently available topical antifungals. However, advanced and nonresponding cases require surgical intervention for resolution of the infection.
Insights
Acremonium keratitis, a fungal eye infection, is often linked to trauma. Early treatment with antifungals is effective, but older age and delayed treatment increase the risk of poor visual outcomes.
Area of Science:
- Ophthalmology
- Infectious Diseases
- Microbiology
Background:
- Fungal keratitis is a significant cause of visual impairment globally.
- Acremonium species are increasingly recognized as causative agents of fungal keratitis.
Purpose of the Study:
- To investigate risk factors, clinical presentation, management, and outcomes of Acremonium keratitis.
- To identify predictors of poor visual outcomes in Acremonium keratitis.
Main Methods:
- Retrospective review of 65 culture-proven Acremonium keratitis cases (2007-2019).
- Analysis of clinical findings, microbiological investigations, and treatment outcomes.
- Statistical analysis to identify risk factors for poor visual outcomes.
Main Results:
- Trauma was the most common predisposing factor (49.2%).
- Average infiltrate size was 24.8 mm2; hypopyon observed in 43.1% of cases.
- Age >50 years and treatment delay >15 days were independent risk factors for poor visual outcome (VA <20/60).
Conclusions:
- Early medical management with topical antifungals is effective for Acremonium keratitis.
- Advanced or non-responding cases necessitate surgical intervention for infection resolution.
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