EFFICACY AND TIMED SEQUENCE ANALYSES OF MODIFIED SINGLE-INJECTION PERIBULBAR ANESTHESIA

This study evaluated a modified single-injection technique of administ ering peribulbar anesthesia. All 150 eyes achieved complete lid anesth esia; 49 eyes (32.7%) demonstrating exophthalmos after injection achie ved excellent (grade 1) instantaneous ocular akinesia. Sequence of tim ed events after injection included lid anesthesia (60.2 +/- 15.33 seco nds), lid akinesia (75.18 +/- 15.33), lateral rectus akinesia (90.19 /- 2.13), inferior rectus akinesia (140.44 +/- 17.51), superior rectus akinesia (229.60 +/- 15.23), and medial rectus akinesia (250.42 +/- 1 8.99). Peribulbar anesthesia, when successful, achieved complete akine sia in fewer than five minutes. In 12 eyes (8%), the peribulbar inject ion had to be repeated. For routine intraocular surgery, we recommend this efficacious, safe technique without the use of a separate facial block.