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Year : 2020  |  Volume : 10  |  Issue : 1  |  Page : 12-17

Parasitic keratitis – An under-reported entity

Department of Medical Parasitology, Postgraduate Institute of Medical Education and Research, Chandigarh, India

Correspondence Address:
Sumeeta Khurana
Department of Medical Parasitology, Postgraduate Institute of Medical Education and Research, SS Anand Block, Sector 12, Chandigarh - 160 012
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/tp.TP_84_19

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Parasitic keratitis (PK) is unique entity among parasitic infections where corneal involvement could result from direct inoculation of the parasite via exogenous environment or spread via endogenous neighboring organs or as a result of immune-mediated damage secondary to a systemic parasitic infection. Most cases of PK are caused by Acanthamoeba spp. and Microsporidia spp. though few other parasitic agents can also lead to corneal involvement. Mimicking as other infectious and non-infectious causes of keratitis, PK often escapes detection. This review summarizes the predominant causes of PK along with the epidemiological, clinical and microbiological details of each. Though several gaps exist in our understanding of the prevalence of PK, the one thing for sure is that PK is on the rise. With advanced diagnostic modalities and enough literature on optimal management of cases of PK, it is now imperative that a strong clinical suspicion of PK is kept when examining a case of corneal pathology and adequate investigations are ordered.

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