Lee Matthew Hao, Webster Diane Lesley
Department of Ophthalmology, Alfred Hospital, Melbourne, VIC 3004, Australia.
Royal Victorian Eye and Ear Hospital, East Melbourne, VIC 3002, Australia.
Int J Ophthalmol. 2016 Jun 18;9(6):925-8. doi: 10.18240/ijo.2016.06.23. eCollection 2016.
Current practice for intraocular lens (IOL) exchange is to cut the optic of the posterior chamber intraocular lens (PCIOL) prior to removing it. Great care must be taken during this maneuver to avoid a posterior capsular tear. Removing the haptics from the fibrosed capsule can also be hazardous, as it may result in zonular stress and dehiscence. A technique is described for performing foldable (one-piece acrylic) IOL removal without cutting the optic. Careful visco-dissection of the haptics with a low viscosity ophthalmic viscosurgical device (OVD) in the fibrosed peripheral capsular tunnel avoids zonular or capsular stress. Internal wound enlargement permits foldable IOL removal in one piece, whilst preserving a self-sealing sutureless corneal wound. This technique may enhance the safety and efficacy of foldable IOL exchange.
目前人工晶状体(IOL)置换的做法是在取出后房型人工晶状体(PCIOL)之前先切割其光学部。在此操作过程中必须格外小心,以避免后囊膜撕裂。从纤维化的囊膜中取出襻也可能有风险,因为这可能导致悬韧带受力和裂开。本文描述了一种在不切割光学部的情况下取出可折叠(单片丙烯酸酯)人工晶状体的技术。使用低粘度眼科粘弹剂(OVD)在纤维化的周边囊膜隧道中仔细地对襻进行粘弹分离,可避免悬韧带或囊膜受力。扩大内部伤口可使可折叠人工晶状体完整取出,同时保留自密封无缝合的角膜伤口。该技术可能会提高可折叠人工晶状体置换的安全性和有效性。