RESUMEN
·AIM: To evaluate the effect of bupivacaine in non-catheter infiltration anesthesia during vitretomy operation.·METHODS:Fifty-eight patients (58 eyes) with vitreous retinal surgery were selected. Patients were randomly divided into observation group ( 28 eyes ) and control group ( 30 eyes ) . The observation group were received non-catheter infiltration anesthesia. The control group were received traditional Sub- Tenon's block ( STB ) . Degree of pain, basic vital signs, the duration of anesthesia and analgesia grade were recorded and compared between two groups.·RESULTS: No significant difference was found in the 11-point numeric rating scale ( NRS - 11 scoring ) of anesthesia process, sclera incision, intraocular operation and the end of operation between two groups (P>0. 05). The difference were not significant in heart rate and blood pressure between two groups(P>0. 05). There was statistically significant difference in the duration of anesthesia between two groups (P<0. 05).·CONCLUSION: Both groups can provide the same anesthetic effect. Compared to STB, non - catheter infiltration anesthesia takes short time, and it is a safe and effective anesthesia methods. In addition, compare to the mixture of bupivacaine and lidocaine injection, bupivacaine injection can provide the same anesthetic effect.