A Rare Case of Mixed Infectious Keratitis Caused by Pseudomonas koreensis and Aspergillus fumigatus

We report the clinical and microbiological features of contact lens-related mixed infectious keratitis caused by a spore-forming filamentous fungus and a rare gram-negative bacterial infection. A 66-year-old Caucasian female presented with right eye (OD) pain after sleeping in her 2-weekly contact l...

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Main Authors: Lin Wei Khoo, Sathish S. Srinivasan, Fiona L. Henriquez, Abhijit M. Bal
Format: Article
Language:English
Published: Karger Publishers 2020-11-01
Series:Case Reports in Ophthalmology
Subjects:
Online Access:https://www.karger.com/Article/FullText/510571
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author Lin Wei Khoo
Sathish S. Srinivasan
Fiona L. Henriquez
Abhijit M. Bal
author_facet Lin Wei Khoo
Sathish S. Srinivasan
Fiona L. Henriquez
Abhijit M. Bal
author_sort Lin Wei Khoo
collection DOAJ
description We report the clinical and microbiological features of contact lens-related mixed infectious keratitis caused by a spore-forming filamentous fungus and a rare gram-negative bacterial infection. A 66-year-old Caucasian female presented with right eye (OD) pain after sleeping in her 2-weekly contact lenses for 3 days. On presentation, corrected distance visual acuity was 0.46 LogMAR OD and 0.20 in the left eye. Slit lamp biomicroscopy revealed a 1.9 mm by 1.9 mm area of dense stromal infiltrate with epithelial defect. Corneal scrapes grew Aspergillus fumigatus and Pseudomonas koreensis, and culture-directed microbial therapy with oral and topical voriconazole and topical fortified gentamicin along with regular debridement resulted in slow resolution of the infection, leaving a dense stromal scar in the visual axis requiring penetrating keratoplasty. Mixed infectious keratitis caused by filamentous fungi and gram-negative bacteria is rare. Pseudomonas koreensis infection has not been previously reported as a cause of infectious keratitis in humans. In our experience, these mixed infections require prolonged systemic and topical therapy and the secondary scarring may require surgical intervention for vision rehabilitation.
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spelling doaj.art-2106cd6ecb2f41c781089c79e11c5b342022-12-21T19:57:37ZengKarger PublishersCase Reports in Ophthalmology1663-26992020-11-0111360060510.1159/000510571510571A Rare Case of Mixed Infectious Keratitis Caused by Pseudomonas koreensis and Aspergillus fumigatusLin Wei KhooSathish S. SrinivasanFiona L. HenriquezAbhijit M. BalWe report the clinical and microbiological features of contact lens-related mixed infectious keratitis caused by a spore-forming filamentous fungus and a rare gram-negative bacterial infection. A 66-year-old Caucasian female presented with right eye (OD) pain after sleeping in her 2-weekly contact lenses for 3 days. On presentation, corrected distance visual acuity was 0.46 LogMAR OD and 0.20 in the left eye. Slit lamp biomicroscopy revealed a 1.9 mm by 1.9 mm area of dense stromal infiltrate with epithelial defect. Corneal scrapes grew Aspergillus fumigatus and Pseudomonas koreensis, and culture-directed microbial therapy with oral and topical voriconazole and topical fortified gentamicin along with regular debridement resulted in slow resolution of the infection, leaving a dense stromal scar in the visual axis requiring penetrating keratoplasty. Mixed infectious keratitis caused by filamentous fungi and gram-negative bacteria is rare. Pseudomonas koreensis infection has not been previously reported as a cause of infectious keratitis in humans. In our experience, these mixed infections require prolonged systemic and topical therapy and the secondary scarring may require surgical intervention for vision rehabilitation.https://www.karger.com/Article/FullText/510571mixed infectious keratitisinfectious keratitisgram-negative bacteriabacteriafungus
spellingShingle Lin Wei Khoo
Sathish S. Srinivasan
Fiona L. Henriquez
Abhijit M. Bal
A Rare Case of Mixed Infectious Keratitis Caused by Pseudomonas koreensis and Aspergillus fumigatus
Case Reports in Ophthalmology
mixed infectious keratitis
infectious keratitis
gram-negative bacteria
bacteria
fungus
title A Rare Case of Mixed Infectious Keratitis Caused by Pseudomonas koreensis and Aspergillus fumigatus
title_full A Rare Case of Mixed Infectious Keratitis Caused by Pseudomonas koreensis and Aspergillus fumigatus
title_fullStr A Rare Case of Mixed Infectious Keratitis Caused by Pseudomonas koreensis and Aspergillus fumigatus
title_full_unstemmed A Rare Case of Mixed Infectious Keratitis Caused by Pseudomonas koreensis and Aspergillus fumigatus
title_short A Rare Case of Mixed Infectious Keratitis Caused by Pseudomonas koreensis and Aspergillus fumigatus
title_sort rare case of mixed infectious keratitis caused by pseudomonas koreensis and aspergillus fumigatus
topic mixed infectious keratitis
infectious keratitis
gram-negative bacteria
bacteria
fungus
url https://www.karger.com/Article/FullText/510571
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