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Abstract #6584 Published in IGR 3-2
Effect of sub-Tenon's and peribulbar anesthesia on intraocular pressure and ocular pulse amplitude
Pianka P; Weintraub-Padova H; Lazar M; Geyer OJournal of Cataract and Refractive Surgery 2001; 27: 1221-1226
PURPOSE: To compare the effect of peribulbar and sub-Tenon's anesthesia on intraocular pressure (IOP) and ocular pulse amplitude (OPA) in the injected eye and fellow noninjected (control) eye. METHODS: This prospective study measured IOP and OPA at baseline and at one and ten minutes after administration of lidocaine anesthesia in 40 consecutive adult patients having elective cataract surgery. RESULTS: The IOP remained stable throughout the study with both modes of anesthesia. One minute after injection of the anesthetic agent, OPA was significantly decreased in the injected eyes in both the sub-Tenon's (24%, p < 0.05) and peribulbar (25%; p < 0.05) groups. The decrease in OPA in the sub-Tenon's group (14%, p < 0.05) was detectable after ten minutes in the control eyes. In the peribulbar anesthesia group, OPA in the control eyes increased significantly (9%; p < 0.05) one minute after injection of the anesthetic agent, returning to preinjection levels ten minutes after the injection. CONCLUSIONS: OPA in the eyes in which lidocaine was injected decreased significantly in both the sub-Tenon's and peribulbar groups. These findings have implications for the management of patients whose ocular circulation may be compromised.
Dr P. Pianka, Department of Ophthalmology, Tel Aviv Sourasky Medical Center, PO Box 1203, Kohav-Yair 44864, Israel. boazp@netvision.net.il
Classification:
12.17 Anesthesia (Part of: 12 Surgical treatment)
