Retina
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Randomized Controlled Trial Comparative Study Clinical Trial
Comparison of pH-adjusted bupivacaine with a mixture of non-pH-adjusted bupivacaine and lignocaine in primary vitreoretinal surgery.
To compare the efficacy of alkalinized bupivacaine with that of a mixture of nonalkalinized bupivacaine and lignocaine for local anesthesia in primary vitreoretinal surgery. ⋯ Alkalinized 0.5% bupivacaine provides better quality of anesthesia than does the mixture of nonalkalinized 0.5% bupivacaine and 2% lignocaine for patients undergoing primary vitreoretinal surgery.
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To assess subjective levels of eye pain, nausea, and sedation following vitreoretinal surgery performed with intravenous sedation and retrobulbar anesthesia. ⋯ One half of individuals undergoing vitreoretinal surgery, especially those who have lengthy procedures (>2 hours), will request pain medication within 5 hours after surgery; one half of these patients will need narcotic analgesia for pain control. Narcotics may result in nausea and sedation.
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Multicenter Study Comparative Study Clinical Trial
Topical anesthesia in posterior vitrectomy.
To evaluate the efficacy of topical anesthesia as an alternative to peribulbar or retrobulbar anesthesia in posterior vitrectomy procedures. ⋯ This technique avoids the risk of globe perforation, retrobulbar hemorrhage, and prolonged postoperative akinesia of the eye. With appropriate case selection, topical anesthesia is a safe and effective alternative to peribulbar or retrobulbar anesthesia in three-port pars plana vitrectomy procedures.