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Procedures such as laceration repair, which at one time required the use of painful infiltrative anesthetics, can now be accomplished safely and comfortably with the use of topical anesthetics. An additional advantage of topical anesthetics in laceration repair is that wound margins are not distorted.
The topical anesthesia has lower risk but does not provide quite as deep of an anesthesia, although the overwhelming majority of people having cataract surgery with a topical anesthetic do not experience any significant pain during the procedure.