PURPOSE: To describe the use of topical gel anesthesia for intravitreal injection drug delivery. METHODS: The first group (n=12) of patients is a crossover group of patients who on separate occasions received intravitreal injections after both 2% lidocaine subconjunctival injection (SC) and 2% lidocaine topical gel anesthesia using 30-gauge needle. The second group (n=16) is a consecutive group of patients who received either SC (n=8) or gel (n=8) anesthesia before intravitreal injection of triamcinolone using 27.5-gauge needle. Descriptive and numerical pain analog scale was used to assess pain sensation. RESULTS: : There was no difference in pain score between gel and SC within the first group (P=0.67, paired, nonparametric test) and no difference in pain score comparing patients who had either SC or gel anesthesia before 27.5-gauge intravitreal injections (P=0.82, unpaired t-test) in the second group. However, there were significant differences in incidence of chemosis (P<0.001) and subconjunctival hemorrhage (P<0.001) after injection versus gel anesthesia in both groups. CONCLUSION: Anesthesia with lidocaine 2% gel provides satisfactory patient comfort for administration of intravitreal injection and causes less chemosis and hemorrhage than SC anesthesia.
RCT Entities:
PURPOSE: To describe the use of topical gel anesthesia for intravitreal injection drug delivery. METHODS: The first group (n=12) of patients is a crossover group of patients who on separate occasions received intravitreal injections after both 2% lidocaine subconjunctival injection (SC) and 2% lidocaine topical gel anesthesia using 30-gauge needle. The second group (n=16) is a consecutive group of patients who received either SC (n=8) or gel (n=8) anesthesia before intravitreal injection of triamcinolone using 27.5-gauge needle. Descriptive and numerical pain analog scale was used to assess pain sensation. RESULTS: : There was no difference in pain score between gel and SC within the first group (P=0.67, paired, nonparametric test) and no difference in pain score comparing patients who had either SC or gel anesthesia before 27.5-gauge intravitreal injections (P=0.82, unpaired t-test) in the second group. However, there were significant differences in incidence of chemosis (P<0.001) and subconjunctival hemorrhage (P<0.001) after injection versus gel anesthesia in both groups. CONCLUSION: Anesthesia with lidocaine 2% gel provides satisfactory patient comfort for administration of intravitreal injection and causes less chemosis and hemorrhage than SC anesthesia.
Authors: Rahul Chaturvedi; Kendall W Wannamaker; Paul J Riviere; Arshad M Khanani; Charles C Wykoff; Daniel L Chao Journal: Ophthalmol Retina Date: 2019-04-04
Authors: Julia Xia; Riley J Lyons; Mung Yan Lin; Yousuf M Khalifa; Christopher N LaRock Journal: J Cataract Refract Surg Date: 2020-07 Impact factor: 3.351