Acanthamoeba keratitis (AK) is a rare corneal infection caused by the free-living amoeba Acanthamoeba (1). Diagnosis of AK is based on the culture of corneal scrapings or detection of the organism in pathology specimens (1). Culture positivity and histology may require a long time (3 to 7 days on average) and are highly dependent on the number of Acanthamoeba cysts and trophozoites recovered from the cornea.
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Iovieno et al. (2010) studied this question.
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