title: Effect of retrobulbar anesthesia on ocular tension.
abstract: To determine the effect of retrobulbar lidocaine, with or without epinephrine, on intraocular pressure, 50 patients admitted to hospital for cataract surgery were selected at random. By applanation tonometry the tension of each eye was measured when the patient was placed on the operating table and 4 minutes after the retrobulbar injection. The decrease in intraocular pressure 4 minutes after the injection was not significant, clinically or statistically, and probably resulted from relaxation of the extraocular muscles.
mesh_terms: D000328:Adult; D000368:Aged; D000772:Anesthesia, Local; D002387:Cataract Extraction; D004837:Epinephrine / Q000494:pharmacology; D006801:Humans; D007429:Intraocular Pressure / Q000187:drug effects*; D008012:Lidocaine / Q000494:pharmacology*; D008875:Middle Aged; D014065:Tonometry, Ocular
chemical_list: D008012:Lidocaine; D004837:Epinephrine