人工晶体植入后，在术中前房注入乙酸胆硷，能使瞳孔立刻缩小，预防人工晶体脱位。白内障摘除后，立刻缩履对保持瞳孔园形和减少瞳孔偏移亦有好处。但目前内眼手术用缩幢剂不易购得，且价格高昂。亦有用注射的毛果美香硷缩瞳，但并非理想。本文介绍内服手术用的乙酸胆硷的配制 Intraocular lens implantation, in the anterior chamber during the injection of choline acetate, can make the pupil immediately reduced to prevent intraocular lens dislocation. Cataract removal, the immediate reduction of the pupil to keep the park and reduce pupil pupil offset also benefit. However, the current eye surgery shrinking agent is not easy to buy, and the high price. Also useful injection of the United States Kirin alkaloids miosis, but not ideal. This article describes the preparation of acetic acid choline for oral use