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A comparison of cataract surgery under topical anaesthesia with and without intracameral lignocaine
Author(s) -
Roberts Tim,
Boytell Kerry
Publication year - 2002
Publication title -
clinical and experimental ophthalmology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.3
H-Index - 74
eISSN - 1442-9071
pISSN - 1442-6404
DOI - 10.1046/j.1442-9071.2002.00473.x
Subject(s) - medicine , phacoemulsification , anesthesia , placebo , blood pressure , cataract surgery , general anaesthesia , oxygen saturation , surgery , visual acuity , oxygen , chemistry , alternative medicine , organic chemistry , pathology
Purpose: To compare the efficacy of intracameral unpreserved lignocaine with placebo during cataract surgery under topical anaesthesia. Methods: One hundred and thirty‐five consecutivecases undergoing clear corneal phacoemulsification were enrolled inthis single surgeon, prospective, double‐masked, controlledtrial. Patients were randomized into two groups, receiving eitherintracameral unpreserved lignocaine 1% or placebo (balancedsalt solution). Systolic and diastolic blood pressure, pulse rateand peripheral oxygen saturation were recorded preoperatively andduring phacoemulsification. The level of intraoperative pain wasassessed by a numerical analogue scale ranging between 0 (no pain)and 10 (unbearable pain). Data were compared by Student t ‐test. Results: Sixty‐seven cases received lignocaine(group 1) and 68 received placebo (group 2). Average age was 75 yearsand 74 years, respectively. Systolic blood pressure, pulserate, oxygen saturation and pain score showed no statistical difference( P = 0.241, 0.542, 0.712, 0.237,respectively). Diastolic blood pressure showed a weakly significant change( P = 0.023). Patients reported minimal discomfort during surgery in both groups. Conclusion: This study found no additional benefit of intracameral unpreserved lignocaine when performing routine clear corneal phacoemulsification under topical anaesthesia.