The peribulbar block technique was developed to minimize the risk of injury to structures within the intraconal space. It is performed by injection into the extraconal space using larger volumes of local anesthetic (eg, up to 12 mL). The larger volume is necessary for its spread into the entire …
Facial Nerve Blocks
Van Lint Blocks
Because retrobulbar blocks do not provide lid akinesia, they are often combined with van Lint blocks. This method of facial nerve block was the first to be reported and is considered to be the classic technique. Typically, 5 to 10 mL of anesthetic (often the same mixture as used for the retrobulbar …
Retrobulbar Block
A Retrobulbar block may be preferred for certain procedures that would benefit from lower volumes of local anesthetic (ie, 3-5 mL). Although retrobulbar blocks are used less commonly than peribulbar blocks because of potential anatomic risk factors associated with administration and the need …