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Intracameral lidocaine may mitigate intraoperative pain for high myopes

J Cataract Refract Surg. 2008;34(10):1664-1668.

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Intracameral lidocaine may enhance intraoperative comfort in highly myopic eyes undergoing cataract surgery with topical anesthesia.

The prospective, randomized, double-blind study included 120 eyes with axial length greater than 26 mm. Eyes were assigned to two groups: 60 eyes receiving topical anesthesia and a placebo of balanced salt solution (control group) and 60 eyes receiving topical anesthesia and 0.1 mL of preservative-free lidocaine hydrochloride 1% in the capsular bag during hydrodissection (study group).

After surgery, patients rated postoperative pain from 0 to 10 on a visual analog scale.

All patients had a mean axial length of 28.58 mm. The study group had a mean postoperative pain score of 1.36 and the control group had a mean score of 1.88. The difference was not statistically significant.

However, control patients reported intraoperative pain or discomfort more often than study patients; the discrepancy between intraoperative sensation and postoperative evaluation may be attributed to the low level of pain associated with modern cataract surgery, the study authors said.