[A new anaesthetic method of intraocular surgery: anaesthesia at infrafascia bulbi].

Objective: To probe the advantage, indications and its mechanism of anaesthesia at intraocular operation with infrafaseia bulbi anaesthetic (IBA) technique.

Methods: 456 eyes were operated with the anaesthesia in infrafascia bulbi, including 77 eyes for phacoemulsification intraocular lens implantation, 346 eyes for modern surgical extracapsular cataract extraction and intraocular lens implantation, 33 eyes for trabeculectomy. 2 ml of mixture of 2% Lidocaine and 0.75% Bupivacaine were injected at infratemporal near bulbi conjunctiva of limbus through the blunt silicone canal, which entered the fascia bulbi via a small incision and reached the equator of the eyeball. When the injection of the mixture filled up the fascia bulbi the surgery could be performed.

Results: IBA applied in 456 eyes had shown the same effect as posterior fascia bulbar and peripheral fascia bulbar anaesthesia. IBA is a safe method.

Conclusion: It is avoided the mechanical injure to optic nerve, artery, vein, muscle and wall of eyeball with IBA using blunt silicone injecting canal. It is proved in our clinical practice that this is a saft and efficient local anaesthetic method.