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