title: Intraocular omni-focal lens with increased tolerance to decentration and astigmatism.
abstract: OBJECTIVE
  To measure the optical performance of an extended depth of focus (EDOF) intraocular lens (IOL), which provides an imaging solution for near, intermediate, and distance ranges, and to compare its optical performance to available bifocal IOLs with various extents of decentration and astigmatism aberrations.
  
  
  METHODS
  A special profile that performs interference principle-based focal extension is engraved on the top of a monofocal rigid IOL. An optical bench based on the L&B eye model was used to test the performance in comparison with the bifocal AcrySof ReSTOR SA60D3 lens (Alcon Laboratories Inc).
  
  
  RESULTS
  The imaging performances at near, intermediate, and distance ranges were mapped. Different decentration parameters and amount of astigmatism aberration were tested. In numerical simulations and the experimental bench, the EDOF IOL was demonstrated to have good visual acuity in near, intermediate, and distance ranges as well as reduced sensitivity to decentration of up to 0.75 mm and the capability of correcting astigmatism aberrations of up to 1.00 diopter.
  
  
  CONCLUSIONS
  Extended depth of focus technology is capable of providing clear and focused vision at near, intermediate, and distance ranges. Its high quality imaging is obtained under large decentration conditions and residual astigmatism. This capability broadens the potential use of the technology beyond its application as a simultaneous multifocal lens.
authors.affiliation: Xceed Imaging, Petach Tikva, Israel.
authors.forename: Shai
authors.initials: S
authors.lastname: Ben Yaish
authors.forename: Alex
authors.initials: A
authors.lastname: Zlotnik
authors.forename: Ido
authors.initials: I
authors.lastname: Raveh
authors.forename: Oren
authors.initials: O
authors.lastname: Yehezkel
authors.forename: Michael
authors.initials: M
authors.lastname: Belkin
authors.forename: Zeev
authors.initials: Z
authors.lastname: Zalevsky
mesh_terms: D001251:Astigmatism / Q000503:physiopathology / Q000517:prevention & control*; D005548:Foreign-Body Migration / Q000503:physiopathology / Q000517:prevention & control*; D006801:Humans; D007910:Lenses, Intraocular; D008962:Models, Theoretical; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012029:Refraction, Ocular; D014792:Visual Acuity