Ocular infection of cattle with Setaria digitata.

One 5-month-old female native Korean calf and a 2-year-old female Holstein cow raised in two farms about 4 km apart from each other in Korea, were found to have the left eye opaque, which included motile white worms in the aqueous humor. The parasite removed from the left eye of the calf was identified as Setaria digitata based on both light and electron microscopic features. The ocular infection with S. digitata reported herein may document the first aberrant case in Korean cattle.