Conclusion This study suggests the topical tetracaine anesthesia for out patient with myringotomy YAG-laser with or without tube is effective and safe and economical.

• 结论8%25丁卡因局部麻醉剂对门诊鼓膜切开、激光和鼓膜置管麻醉有效、安全、可靠，且经济实用。