The efficacy and safety of parabulbar (Flush) anaesthesia was investigated
prospectively in 50 eyes of 36 patients undergoing various anterior
segment surgical procedures.
We used a No. 24 canrtula to deliver the anaesthetic mixture (Flush) to
the sub-Tenon space of the inferior temporal or nasal qi tneirants. The effect
of anaesthesia was graded 0 to 5 depending on the adequacy of anaesthesia-
alcinesia with or without supplementation. Thirty eyes underwent
ECCE and 10L, Nine eyes underwent phakoemulsification and
foldable 10L. Six eyes underwent subscleral trabeculectomy and _five eyes
underwent secondary IOL implantation with or without anterior vitrectorn
Mean duration of surgery was 52.8 minutes.
In 86% of eyes (grades 4 and 5), no supplementation was required. Local
supplementation was needed in 10% of eyes. Both local and systemic
supplementation were needed in 4% (grade 2 and 3) for inadequate anaesthesia
or alcinesia or both. No serious ocular or systemic complications
occurred. Early onset of anaesthesia correlm`Pd with adequate anaesthesia
throughout the procedure (P<0.03).
Conclusion: parabulbar (Flush) anaesthesia is a safe and effective
technique of local anaesthesia in patients undergoing different anterior
segment surgeries. |
