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Case Reports
. 2013 Jul;8(3):481-5.

First Report of Hartmannella keratitis in a Cosmetic Soft Contact Lens Wearer in Iran

Hoda Abedkhojasteh  1 , Maryam Niyyati  2 , Firoozeh Rahimi  3 , Mansour Heidari  4 , Shohreh Farnia  1 , Mostafa Rezaeian  5
Affiliations
Case Reports

First Report of Hartmannella keratitis in a Cosmetic Soft Contact Lens Wearer in Iran

Hoda Abedkhojasteh et al. Iran J Parasitol. 2013 Jul.

Abstract

Poor hygiene will provide good condition for corneal infections by opportunistic free-living amoebae (FLA) in soft contact lens wearers. In the present study an amoebic keratitis due to Hartmannella has been recognized in a 22-year-old girl with a history of improper soft contact lens use. She had unilateral keratitis on her left eye. Her clinical signs were eye pain, redness, blurred vision and photophobia. The round cysts of free-living amoebae were identified in non-nutrient agar medium by light microscopy. These cysts were suspected to be Hartmannella using morphological criteria. A PCR assay has been confirmed that the round cysts were belonged to H. vermiformis.

Keywords: Amoebic keratitis; Contact lens; Hartmannella; Iran.

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Figures

Fig. 1
Fig. 1
Clinical photograph of the patient at the admission time
Fig. 2
Fig. 2
Light microscopy image of Hartmannella vermiformis cysts on non-nutrient agar (X400)
Fig. 3
Fig. 3
Light microscopy image of Hartmannella vermiformis cysts on non-nutrient agar (X1000)
See this image and copyright information in PMC

References

    1. Khan NA. Acanthamoeba: biology and increasing importance in human health. FEMS Microbiol Rev. 2006;30(4):564–95. - PubMed
    1. Pickup ZL, Pickup R, Parry JD. Growth of Acanthamoeba castellanii and Hartmannella vermiformis on live, heat-killed and DTAF-stained bacterial prey. FEMS Microbiol Ecol. 2007;61(2):264–72. - PubMed
    1. Visvesvara GS, Moura H, Schuster FL. Pathogenic and opportunistic free-living amoebae: Acanthamoeba spp., Balamuthia mandrillaris, Naegleria fowleri, and Sappinia diploidea. FEMS Immunol Med Microbiol. 2007;50(1):1–26. - PubMed
    1. Schuster FL, Visvesvara GS. Free-living amoebae as opportunistic and non-opportunistic pathogens of humans and animals. Int J Parasitol. 2004;34(9):1001–27. - PubMed
    1. Schuster FL, Visvesvara GS. Opportunistic amoebae: challenges in prophylaxis and treatment. Drug Resist Updat. 2004;7(1):41–51. - PubMed

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