Infectious Keratitis Caused by Shewanella Putrefaciens

Tae Kyu Moon; Yong-Sok Ji; Kyung Chul Yoon

doi:10.3341/jkos.2019.60.8.787

Journal List > J Korean Ophthalmol Soc > v.60(8) > 1130598

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Moon, Ji, and Yoon: Infectious Keratitis Caused by Shewanella Putrefaciens

Case Report

Journal of the Korean Ophthalmological Society 2019; 60(8): 787-791.

Published online: 20 August 2019

DOI: https://doi.org/10.3341/jkos.2019.60.8.787

Infectious Keratitis Caused by Shewanella Putrefaciens

Tae Kyu Moon, MD, Yong-Sok Ji, MD, PhD, Kyung Chul Yoon, MD, PhD

Department of Ophthalmology, Chonnam National University Medical School, Gwangju, Korea.

Address reprint requests to Kyung Chul Yoon, MD, PhD. Department of Ophthalmology, Chonnam National University Hospital, #42 Jebong-ro, Dong-gu, Gwangju 61469, Korea. Tel: 82-62-220-6753, Fax: 82-62-227-1642, kcyoon@jnu.ac.kr

Received 20 December 2018 Revised 21 January 2019 Accepted 18 July 2019

The Korean Ophthalmological Society

(open-access):

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Purpose

We report a case of infectious keratitis caused by Shewanella putrefaciens in a patient after fishing.

Case summary

A 75-year-old male with no underlying disease other than hypertension was admitted to our hospital because of decreased visual acuity and congestion in his left eye for 2 weeks. At the first ophthalmic examination, the best-corrected visual acuity (BCVA) of the left eye was counting fingers. Slit lamp examination showed stromal infiltrates with 2.0 × 2.0 mm corneal epithelial defects, endothelial inflammatory plaques and 1 mm height hypopyon with severe inflammation in the anterior chamber. Bacterial culture tests were performed by corneal scraping, which were positive for Shewanella putrefaciens, followed by treatment with moxifloxacin and ceftazidime topical antibiotics. After 2 months of treatment, the BCVA of the left eye improved to 0.4 and the corneal lesion clinically improved with residual mild stromal opacity.

Conclusions

Shewanella putrefaciens should be considered as a causal pathogen of infectious keratitis in patients after fishing. We report a case of infectious keratitis caused by Shewanella putrefaciens, which has never previously been reported in the Republic of Korea.

Keywords: Corneal ulcer, Shewanella putrefaciens

Figures and Tables

Figure 1

Slit lamp photograph and anterior segment optical coherence tomography at the first ophthalmic examination. (A) Slit lamp photograph at the first ophthalmic examination showing infectious keratitis with central epithelial defects, stromal infiltrates, perilesional stromal edema and severe chamber reaction with linear hypopyon. (B) Anterior segment optical coherence tomography showing central stromal infiltrates, endothelial inflammatory plaques and edema.

Figure 2

Bacterial culture tests by corneal scraping. On blood agar plates, the Shewanella putrefaciens colonies are convex and large, with a brown pigment.

Figure 3

Slit lamp photographs at 1 week and 3 weeks after antibacterial treatments. (A) One week after antibacterial treatments, epithelial defects size, stromal infiltration and hypopyon decreased. (B) Three weeks of antibacterial treatments, the corneal lesions healed with a remaining stromal opacity.

Notes

^{Conflicts of Interest} The authors have no conflicts to disclose.

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