在超声乳化白内障吸除术中,小瞳孔状态是眼科手术中经常遇到的困难情况之一,也是导致手术并发症发生的主要危险因素之一。要使药物无法散大的小瞳孔尽量开大,就必须借助工具,也就不可避免地需要牵扯瞳孔、接触虹膜,从而可能引起患者不适。为评价和探讨表面麻醉下小瞳孔弹性虹膜拉钩扩张超 In phacoemulsification cataract surgery, the small pupil state is one of the most frequently encountered difficulties in ophthalmic surgery and is one of the major risk factors for the occurrence of surgical complications. To make drugs small and small pupils open as much as possible, we must use tools, it will inevitably need to involve the pupil, contact iris, which may cause discomfort to patients. To evaluate and explore the surface anesthesia under the small pupil elastic iris pull hook expansion over