Figure 4From: Congenital nasolacrimal duct fistula in Brown Swiss cattlePresence of hair and inflammatory changes at the openings of lacrimal duct fistulae. A) Hairless nasolacrimal duct fistula at the transition from hairless to haired skin at 4 o’clock, 1.8 cm from the medial canthus of the right eye in a four-month-old granddaughter of dam J; B) Nasolacrimal duct fistula, covered with hair, at 8 o’clock, 4.5 cm from the medial canthus of the left eye in a four-year-old daughter of bull C; C) Nasolacrimal duct fistula with a circular opening with lacrimation in the right eye of a six-month-old daughter of bull A; D) Nasolacrimal duct fistula with a circular opening accompanied by inflammation of the skin and lacrimation in the left eye of a one-year-old daughter of bull A.Back to article page