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J Cataract Refract Surg ; 41(4): 719-23, 2015 Apr.
Article in English | MEDLINE | ID: mdl-25840296

ABSTRACT

PURPOSE: To compare the analgesic efficacy of 2 types of anesthetic techniques-topical and topical associated with cryoanalgesia-during cataract surgery. SETTING: Department of Ophthalmology, University of São Paulo, Ribeirão Preto, Brazil. DESIGN: Prospective randomized study. METHODS: Patients with symmetrical bilateral cataract had phacoemulsification with the use of an intraocular irrigation solution at room temperature in 1 eye and a cold (4°C) solution in the contralateral eye (Group 2). The pain related to the procedure was assessed using a visual analog scale ranging from 0 to 100, with 0 representing no pain and 100 the worst pain. In addition, endothelial cell loss, the change in corneal thickness, and visual acuity were evaluated 30 days ± 2 (SD) after each surgery. The surgery duration, total irrigation volume, phacoemulsification time, and ultrasound power used were analyzed. RESULTS: The study enrolled 25 patients (50 eyes). There was no statistically significant difference in the mean pain score between Group 1 (26.0 ± 3.7) and Group 2 (21.3 ± 3.6) (P = .2016, paired t test). No significant difference was found in the mean corneal endothelial cell loss (Group 1: 10.0% ± 0.4%; Group 2: 9.9% ± 0.3%; P = .7576), corneal thickness increase (Group 1: 1.5 ± 1.0 µm; Group 2: 1.4 ± 0.9 µm; P = .9340), or visual acuity gain (Group 1: 0.54 ± 0.06 logMAR; Group 2: 0.55 ± 0.09 logMAR; P = .8208). CONCLUSION: There is no difference in the intensity of pain during phacoemulsification with the use of topical anesthesia or topical anesthesia associated with cryoanalgesia. FINANCIAL DISCLOSURE: No author has a financial or proprietary interest in any material or method mentioned.


Subject(s)
Cryotherapy/methods , Eye Pain/diagnosis , Lens Implantation, Intraocular , Pain Measurement , Phacoemulsification/methods , Aged , Analgesia/methods , Anesthesia, Local/methods , Anesthetics, Local , Cataract/complications , Corneal Endothelial Cell Loss/pathology , Female , Humans , Male , Prospective Studies , Visual Acuity
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