One thought on “Episode 249: Keywords Part 21: Retrobulbar Blocks and the Oculocardiac Reflex”

1. Incorrectly states trochlear nerve has no involvement with the eye. While extraconal (and the correct question answer) it innervates the superior oblique eye muscle and not the ear.

   Also, when Gillian lists contraindications to Retrobulbar block, glaucoma is not listed. Some of these patients get Peribulbar blocks for trabeculectomies which cause more chemosis than Retrobulbar blocks. I wasn’t able to find that as a contraindication listed anywhere, but patient inability to cooperate (eg agitation) is consistently listed as a relative contraindication. It seems like glaucoma might be the one that is not contraindicated for block in this scenario.

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