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Clinical stages of IKC in semidomesticated reindeer during an outbreak in Norway in 2009. Pictures show different animals with different levels of disease severity. (A) Increased lacrimation and a bluish, opaque cornea (grade 2). (B) Purulent exudation from the eye and periorbital edema (grade 3). (C) Purulent exudation, bleeding, and severe bacterial infection (grade 4). (D) Late stage of IKC, with complete loss of structure and function (grade 5).
