Observations of 1st instar larvae of nostril fly (cephenomyia trompe l.) in the eye of reindeer and their relation to keratitis in this animal

Keratitis in reindeer (Bergman 1912) appears during the summer season, sometimes in the late spring but more frequently in the height of the summer, rather regularly in parts of the reindeer herding areas in the northern parts of Scandinavia, USSR, and North America.