Fungal Keratitis: Diagnostic Characteristics of the Potassium Hydroxide Preparation With Calcofluor White in Northern California.
| Autor: | Bacorn C; Department of Ophthalmology and Vision Science, University of California Davis Health, Sacramento, CA; and., Luu KY; UC Davis School of Medicine, University of California Davis Health, Sacramento, CA., Li JY; Department of Ophthalmology and Vision Science, University of California Davis Health, Sacramento, CA; and. |
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| Jazyk: | angličtina |
| Zdroj: | Cornea [Cornea] 2022 Mar 01; Vol. 41 (3), pp. 347-352. |
| DOI: | 10.1097/ICO.0000000000002907 |
| Abstrakt: | Purpose: The incidence of fungal keratitis demonstrates significant geographic and climatic variation. We report on the characteristics of the potassium hydroxide/calcofluor white (KOH-CFW) preparation observed at a tertiary center in Northern California, a region with a low incidence of fungal keratitis. Methods: Culture-proven cases of microbial keratitis during a 5-year period were retrospectively reviewed. The sensitivity, specificity, and posttest probabilities were determined for the KOH-CFW assay. These results were compared with documented clinical impression and values reported in the literature. Results: Three hundred three of 368 episodes of microbial keratitis during the study period documented the results of a fungal culture, KOH-CFW assay, and a clinical impression. Twenty-one (6.9%) of these cultures were positive for fungal organisms. The sensitivity and specificity of the KOH-CFW test were 29% and 93%, respectively. Clinicians' initial clinical impression based solely on patients' history and examination, without the aid of any histopathologic or biochemical test results, demonstrated a sensitivity and specificity of 33% and 89%, respectively. Conclusions: The observed sensitivity and specificity of the KOH-CFW preparation are significantly lower than many previously reported values. In regions with low incidence of fungal keratitis, the KOH-CFW preparation may have diagnostic performance similar to that of the clinical impression formed only on the basis of history and physical examination. Competing Interests: The authors have no funding or conflicts of interest to disclose. (Copyright © 2021 Wolters Kluwer Health, Inc. All rights reserved.) |
| Databáze: | MEDLINE |
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