PRINT ISSN 1222-5304, ISSN-L: 2065-1295, ISSN CD: 2343-9394,ISSN ONLINE 2067-3663
 

REDUCTION OF CONJUNCTIVAL BALLOONING SECONDARY TO RETROBULBAR NERVE BLOCK FOR INTRAOCULAR SURGERY IN THE DOG

Published in Scientific Works. Series C. Veterinary Medicine, Vol. LXI
Written by Andra ENACHE, Pip BOYDELL, Iuliana IONAŞCU, Alexandru ŞONEA

This report describes conjunctival ballooning as a result of subconjunctival accumulation of the injected fluid following retrobulbar block for intraocular surgery in the dog. A prospective study was conducted on seventeen cataract procedures in dogs of different breeds, weighing between 6.1 kg and 33 kg, aged between 12 weeks and 8 year old where retrobulbar nerve block was performed prior to surgery. Local anaesthetic (Lignocaine hydrochloride injection BP 2%) was diluted with different volumes of saline (2-5 mls) and the solution was slowly infiltrated into the orbit via a ventrolateral conjunctival approach until the globe was displaced anteriorly into a central gaze position. The purpose was to obtain a good eyeball positioning prior to phacoemulsification procedure. In 3 cases a subconjunctival ballooning was noticed with a doughnut appearance of the bulbar conjunctiva that precluded surgical access to the dorsal cornea. These cases required the use of fine scissors to make a radial cut in the elevated conjunctiva, until the swelling was reduced sufficient so as not to interfere with the surgical procedure. This communication records conjunctival ballooning as a complication of retrobulbar nerve block in the dog.

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