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  • Title: A single drop of 0.5% proparacaine hydrochloride for uncomplicated clear corneal phacoemulsification.
    Author: Joshi RS.
    Journal: Middle East Afr J Ophthalmol; 2013; 20(3):221-4. PubMed ID: 24014985.
    Abstract:
    PURPOSE: The purpose of this study was to compare the efficacy of a single drop of 0.5% proparacaine hydrochloride in uncomplicated cataract surgery with phacoemulsification. MATERIALS AND METHODS: Two hundred and ninety five patients scheduled for the phacoemulsification were divided into 2 groups based on the anesthetic agents they were to receive: 146 patients who received a single drop of 0.5% proparacaine 2 min before the start of the surgery (proparacaine group) and; 149 patients who received supplementation of 0.5% intracameral preservative free xylocaine (xylocaine group). A single surgeon performed all surgeries. Intraoperative and post-operative pain scores were evaluated on a visual analog scale. The surgeon noted his subjective impression of corneal clarity, discomfort while performing the surgery any supplemental anesthesia required and intraoperative complications. An anesthetist noted vital parameters and the need for intravenous sedation. Total surgical time was noted. Comparison of parameters was performed with the Chi-square test, and A P value less than 0.05 was considered as statistically significant. RESULTS: No statistically significant difference was seen in the intraoperative (P = 0.24) and post-operative (P = 0.164) pain scores between groups. There was no pain (0 score) in 41.8% of patients in the proparacaine group and 46.3% of patients in the xylocaine group. The average surgical time (P = 0.279) and surgeon discomfort (P = 0.07) were not statistically significantly different between groups. No patients required supplemental anesthesia. There were no surgical complications that could compromise the visual outcome. An equal number of patients in both groups preferred same type of anesthetic technique for the fellow eye cataract surgery (89.11% for the proparacaine group and 90.18% for the xylocaine group). No patients in either group had changes in vital parameters or required intravenous sedation. CONCLUSION: A single drop pre-operatively, of proparacaine hydrochloride was comparable to the intracameral supplementation of preservative free xylocaine for phacoemulsification in uncomplicated cataract surgery without compromising the visual outcome. However, we recommend individualizing the anesthetic technique according to the requirements of the surgeon.
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