Case of a large, movable bacterial concretion with biofilm formation on the ocular surface.

Cornea

Division of Ophthalmology and Visual Science, Faculty of Medicine, Tottori University, Yonago, Tottori, Japan.

Published: July 2004

AI Article Synopsis

  • A case of a 74-year-old woman with eye pain revealed a large movable bacterial mass on her ocular surface after previously undergoing eye surgeries.
  • During examination, the mass was found to be a biofilm of bacteria, not a calcification as initially thought.
  • The findings highlight that bacterial biofilms can form on the eye even in the absence of artificial materials.

Article Abstract

Objective: To report a case with a large movable bacterial concretion formed on the ocular surface without biomaterials.

Methods: Interventional case report. A 74-year-old woman with left eye pain and injection was referred to us. She had a past history of scleral patch graft for necrotizing scleritis after pterygium removal and mitomycin C instillation on her left eye 7 years before. On present examination, a 2.5- to 3.0-mm yellowish-white calcification-like mass was present on the nasal sclera and cornea, and it moved slightly with blinking. The anterior chamber was shallow, and cornea was suspected to be perforated under this object.

Results: This yellowish-white mass was surgically removed. Pathologic examination demonstrated that the specimen was not a calcification but a biofilm formation by many gram-positive bacilli with neutrophils. Corynebacterium was highly suspected as the causative agent of this unusual mass because of the earlier culture of the discharge before referral.

Conclusion: The current case demonstrates that bacterial biofilms can be formed on the ocular surface without the involvement of biomaterials.

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Source
http://dx.doi.org/10.1097/01.ico.0000114838.91149.6dDOI Listing

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