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 …
Ophthalmic Hyaluronidase
What is Hyaluronidase?
Hyaluronidase is an enzyme which degrades hyaluronan (HA) and has diverse clinical applications resulting from its ability to facilitate the dispersion and/or absorption of an array of medications and fluids. It provides rapid penetrance of anesthetic agents, particularly to locations difficult to …
Sub-Tenon’s Block
What is Sub-Tenon's Block? A sub-Tenon's block (STB) administered using either a needle or cannula provides high-quality anesthesia of the whole globe using relatively small volumes (eg, 1.25-5 mL). The addition of hyaluronidase in STB has been studied in varying combinations across six randomized, …