Goldman James M, Karp Carol L
Bascom Palmer Eye Institute, Miami, Florida 33136, USA.
Curr Opin Ophthalmol. 2007 Feb;18(1):44-51. doi: 10.1097/ICU.0b013e3280121b09.
Patients anticipate favorable surgical outcomes when having cataract surgery. The modern-day cataract surgeon should employ all necessary means to achieve this result. A working knowledge of adjunct devices for pupil expansion and capsular-bag stabilization can significantly improve surgical outcomes.
Adjunct devices for pupil expansion include the Beehler pupil dilator, nylon iris hooks, and pupillary rings, including the Perfect Pupil, the Graether 2000, and the Morcher pupil dilator. Capsular-bag stabilization can be accomplished with capsular tension rings, capsular tension segments or iris hooks. The recent literature on these devices is reviewed.
Impaired visualization through a small pupil and poor tissue stabilization increases the chance of tissue damage, retained nuclear material, and vitreous loss. Fortunately, inadequate mydriasis and instability of the capsular bag can be managed safely with the use of adjunct tools. Preoperative planning, familiarity with available tools, and accessibility of these devices in the operative setting is necessary.
患者在进行白内障手术时期望获得良好的手术效果。现代白内障手术医生应采用一切必要手段来实现这一结果。掌握用于瞳孔扩张和囊袋稳定的辅助器械的实用知识可显著改善手术效果。
用于瞳孔扩张的辅助器械包括比勒瞳孔扩张器、尼龙虹膜钩和瞳孔环，如完美瞳孔、格雷瑟2000和莫尔彻瞳孔扩张器。囊袋稳定可通过囊袋张力环、囊袋张力节段或虹膜钩来实现。本文对有关这些器械的最新文献进行了综述。
通过小瞳孔导致的视野受限以及组织稳定性差会增加组织损伤、残留核物质和玻璃体丢失的几率。幸运的是，使用辅助工具可安全处理瞳孔散大不足和囊袋不稳定的问题。术前规划、熟悉可用工具以及在手术环境中能够获取这些器械是必要的。
