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Pinkeye is the common term for Infectious Bovine Keratoconjunctivitis (IBK). This terminology describes a disease condition of cattle which is infectious in nature and causes an inflammation of the transparent cornea, the sclera (“white”) of the eyeball and the conjunctiva (inside lining membrane) of the lids. The economic effects of a herd outbreak can be severe. Reduced average weight gains have been documented in calves of 17 pounds, with one eye affected and 30 to 65 pounds when both eyes were infected. The incidence is usually higher in calves, but breeding age animals are also affected.