A technique developed in 1976 by Malcolm McCannel, MD, for iris suture fixation for posterior chamber intraocular lenses
The technique was developed for refixing, resuturing, and stabilizing subluxated posterior chamber intraocular lenses and maintaining iris integrity (Karmel 2014). The procedure is considered if there is insufficient capsular or zonular support or excessive iris defect. This procedure served as a transcorneal, retrievable suture technique.
Though safe, contraindications to cataract surgery are an indication for not pursuing the McCannel technique. The absence of sufficient iris tissue is a contraindication.
Techniques and Principles
The technique is a form of iris suturing that entails passing a long needle on a 10-0 polypropylene suture into the proximal and distal ends of the iris (Krachmer et al. 2011). Following this, the needle tip is guided out of a distal paracentesis by docking into a...
- Karmel M (2014) Iris suture fixation: new take on an old technique. From http://www.aao.org/publications/eyenet/200609/cataract.cfm
- Krachmer JH, Mannis MJ, Holland EJ (2011) Cornea, 3rd edn. Elsevier/Mosby 1671–1677Google Scholar
- Yanoff M, Duker JS (2014) Ophthalmology, 5th edn. Elsevier. 395–403Google Scholar