A retrobulbar block is a regional anesthetic nerve block placed in the retrobulbar space behind the eyeball, used most often for cataract surgery and other operations inside the eye. The injected local anesthetic paralyzes the extraocular muscles by blocking cranial nerves II, III, and VI and numbs the conjunctiva, cornea, and uvea by blocking the ciliary nerves, while cranial nerve IV is unaffected because it lies outside the muscle cone.
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1. Wikipedia
Wikipedia contributors, Wikimedia Foundationhttps://en.wikipedia.org/wiki/Retrobulbar_block, lead sectionQuote, https://en.wikipedia.org/wiki/Retrobulbar_block, lead section
A retrobulbar block is a regional anesthetic nerve block in the retrobulbar space, which is the area located behind the globe of the eye.
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