Intraocular lens injector-induced stress on the corneal incisions during lens implantation

Guy Kleinmann*, Itzhak Kleinmann

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


Purpose To describe a model for calculating induced stress on corneal incisions during intraocular lens implantation, and to compare the nozzles of common injectors using 2 incision sizes. Design Experimental study. Methods A finite element calculation model was developed and used to compare 7 commercially available injectors in widespread clinical use. The injectors' characteristics were measured and correlated for the stress they induced for 2.4- or 2.2-mm corneal incisions. Results Each injector created a different level of stress on the corneal incision. The stress was highest at the incision margins, and its level correlated with the injector's external circumference. The induced stress on 2.2-mm incision margins was about 9% higher compared to the induced stress on 2.4-mm incision margins. Conclusions A model for comparing stress induced on corneal incisions during intraocular lens implantation by 7 injectors revealed different levels of induced stress on the incision margins. It is therefore recommended that the choice of injector be matched to the size of the corneal incision.

Original languageEnglish
Pages (from-to)185-191.e1
JournalAmerican Journal of Ophthalmology
Issue number1
StatePublished - Jul 2014
Externally publishedYes


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