title: AcrySof Natural intraocular lens optical characteristics during and after different doses of ultraviolet-visible light illumination.
abstract: OBJECTIVE
  To determine the optical transmission properties of a recently introduced intraocular lens (IOL) (AcrySof Natural SN60AT, Alcon Laboratories) and compare them with those of a conventional IOL (AcrySof SA60AT, Alcon Laboratories) after ultraviolet (UV)-visible light irradiation.
  
  
  METHODS
  Eye Clinic and Department of Clinical Physiopathology, University of Florence, and the National Institute of Applied Optics, Florence, Italy.
  
  
  METHODS
  Two IOLs, the AcrySof Natural with a UV and blue-light filter and the AcrySof without a blue-light filter, were studied. Three IOLs of each model with different dioptric powers were examined in two experimental setups. The samples were stressed with very high irradiance to reproduce light aging, and the transmission properties of the IOLs were studied.
  
  
  RESULTS
  No significant decrease in transmission was found at a UV-visible light dose equivalent to 100 years of light aging.
  
  
  CONCLUSIONS
  The AcrySof Natural IOL has stable optical characteristics.
authors.affiliation: Department of Oto-Neuro-Ophthalmological Surgical Sciences-Eye Clinic, University of Florence, Italy. rita.menucci@unifi.it
authors.forename: Rita
authors.initials: R
authors.lastname: Mencucci
authors.forename: Luca
authors.initials: L
authors.lastname: Mercatelli
authors.forename: Franco
authors.initials: F
authors.lastname: Fusi
authors.forename: Clandia
authors.initials: C
authors.lastname: Ponchietti
authors.forename: Monica
authors.initials: M
authors.lastname: Monici
authors.forename: Ugo
authors.initials: U
authors.lastname: Menchini
mesh_terms: D000180:Acrylic Resins / Q000528:radiation effects*; D007910:Lenses, Intraocular; D055095:Optics and Photonics; D014466:Ultraviolet Rays
chemical_list: D000180:Acrylic Resins