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There are currently several different commercially available topical eye drops and gels used to reduce eye discomfort (topical anesthetics) during and after eye injections. Dr. Pollack is performing a research study to evaluate three commercially available topical anesthetics (eye numbing treatments) to determine if individuals have a preference for one over the other. The three topical anesthetics being studied are 1) 0.5% proparacaine hydrochloride (generic, Akorn, Inc), 2) 0.5% proparacaine hydrochloride (generic, Akorn, Inc) PLUS 4% lidocaine hydrochloride topical solution (generic, Roxane Laboratories), and 3) 3.5% lidocaine hydrochloride ophthalmic gel (Akten, Akorn, Inc). These eye anesthetics are NOT experimental medications. They are all commercially available topical anesthetics currently used in our offices and their use is widespread among retina specialists throughout the United States. Dr. Pollack will randomly select one topical anesthetic to use and he will ask you to grade your level of pain associated with the injection procedure. Answering these questions should take less than one minute of your time and your identity will NOT be revealed with the results of this study. The results of this study will be used to inform doctors which eye anesthetics patients find most effective for pain control during eye injections.
In this prospective study, 120 sequential patients undergoing 30 and 33 Gauge intravitreal injections were randomly assigned to receive either: proparacaine HCL 0.5% (Group 1), proparacaine HCL 0.5% + 4% lidocaine liquid drops (Group 2); or 3.5% lidocaine gel (Group 3) as topical anesthetic prior to injection. All procedures utilized a lid speculum and 5% povidone iodine. Approximately 10 seconds after injection, patients graded pain associated with the lid speculum, the needle, and with burning sensation on a pain scale of 0 to 10, with 0 representing no pain and 10 representing the patient's worst imaginable pain. They also graded their overall injection procedure experience as Excellent, Very Good, Fair, Poor, or Awful.
Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment
proparacaine HCL 0.5%, proparacaine HCL 0.5% + 4% lidocaine solution, 3.5% viscous lidocaine gel
Illinois Retina Associates
Illinois Retina Associates
Published on BioPortfolio: 2014-07-24T14:10:40-0400
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A colorless liquid with a sharp burning taste and slight odor. It is used as a local anesthetic and to reduce pain associated with LIDOCAINE injection. Also, it is used in the manufacture of other benzyl compounds, as a pharmaceutic aid, and in perfumery and flavoring.
Antiarrhythmic agent pharmacologically similar to LIDOCAINE. It may have some anticonvulsant properties.
A local anesthetic that is similar pharmacologically to LIDOCAINE. Currently, it is used most often for infiltration anesthesia in dentistry. (From AMA Drug Evaluations Annual, 1992, p165)
A local anesthetic and cardiac depressant used as an antiarrhythmia agent. Its actions are more intense and its effects more prolonged than those of procaine but its duration of action is shorter than that of bupivacaine or prilocaine.
A local anesthetic that is chemically related to BUPIVACAINE but pharmacologically related to LIDOCAINE. It is indicated for infiltration, nerve block, and epidural anesthesia. Mepivacaine is effective topically only in large doses and therefore should not be used by this route. (From AMA Drug Evaluations, 1994, p168)
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