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==Dacryocystorhinography==
==Dacryocystorhinography==
This technique involves injecting a radioopaque dye through the punctum in the eye and the canaliculus, and obtaining radiographs as the dye passes through the '''nasolacrimal system'''.
Under general anaesthesia, the upper punctum is cannulated and contrast is injected until it appears from the lower punctum or external nares.
This technique outlines the nasolacrimal drainage system and can help diagnose abnormalities associated with obstructions, deviations, congenital defects and neoplasms.
It is commonly used in '''rabbits with dacryocystitis'''.
==Contrast Studies in Horses==
==Contrast Studies in Horses==