Encyclopedia of Ophthalmology

Living Edition
| Editors: Ursula Schmidt-Erfurth, Thomas Kohnen

McCannel Technique

  • Sidharth Puri
Living reference work entry
DOI: https://doi.org/10.1007/978-3-642-35951-4_848-1



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...

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  1. Abbott RL, Spencer WH (1978) Epithelialization of the anterior chamber after transcorneal (McCannel) suture. Arch Ophthalmol 96(3):482–484CrossRefPubMedGoogle Scholar
  2. Karmel M (2014) Iris suture fixation: new take on an old technique. From http://www.aao.org/publications/eyenet/200609/cataract.cfm
  3. Krachmer JH, Mannis MJ, Holland EJ (2011) Cornea, 3rd edn. Elsevier/Mosby 1671–1677Google Scholar
  4. Yanoff M, Duker JS (2014) Ophthalmology, 5th edn. Elsevier. 395–403Google Scholar

Copyright information

© Springer Science Business Media, New York (outside the USA) 2014

Authors and Affiliations

  1. 1.Johns Hopkins University School of MedicineBaltimoreUSA