in the dog: 3 and 6 micrograms/kg/min of epinine

One hundred twelve eyes from newly slaughtered pigs were used. After pretreatment with 20 mg intracameral acetylcholine to give miosis, 0.15 mL epinine was given as an intracameral injection. The pupils were filmed during 90 seconds with a video camera connected to an operation microscope, and the mean pupil diameters were measured from the video recordings. In 37 additional eyes, 0.15 mL vehicle, 1.5% epinine was injected intracamerally, and the eyes were kept on ice overnight. Epinine had a significantly larger mydriatic effect than phenylephrine at equal concentrations.