title: Intraocular lens injector-induced stress on the corneal incisions during lens implantation.
abstract: OBJECTIVE
  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.
  
  
  METHODS
  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.
authors.affiliation: Department of Ophthalmology, Kaplan Medical Center, Rehovot, Israel, affiliated to The School of Medicine, Hebrew University, Jerusalem, Israel. Electronic address: guy.kleinmann@hsc.utah.edu.
authors.forename: Guy
authors.initials: G
authors.lastname: Kleinmann
authors.affiliation: Department of Ophthalmology, Kaplan Medical Center, Rehovot, Israel, affiliated to The School of Medicine, Hebrew University, Jerusalem, Israel.
authors.forename: Itzhak
authors.initials: I
authors.lastname: Kleinmann
mesh_terms: D003198:Computer Simulation; D003315:Cornea / Q000503:physiopathology* / Q000601:surgery; D020342:Finite Element Analysis; D006801:Humans; D019654:Lens Implantation, Intraocular / Q000295:instrumentation*; D007910:Lenses, Intraocular; D008962:Models, Theoretical; D013314:Stress, Mechanical