title: Determination of scattering in intraocular lenses by spectrophotometric measurements.
abstract: This study presents a method for measuring scattering in explanted intraocular lenses (IOLs). Currently, determining scattering in IOLs is usually performed by Scheimpflug cameras and the results are expressed in the units used by this apparatus. The method we propose uses a spectrophotometer and this makes it possible to measure the total transmission of the IOL by using an integrating sphere; the direct transmission is determined by the double-beam mode. The difference between these two transmissions gives a value of the scattering in percentage values of light lost. In addition, by obtaining the spectral transmission curve, information about the most scattered wavelengths is also obtained. The IOL power introduces errors when directly measured, particularly with high powers. This problem can be overcome if a tailor-made cuvette is used that shortens the distance between the IOL and the condensing lens of the spectrophotometer when the IOL powers are below 24 diopters. We checked the effectiveness of this method by measuring the scattering of three explanted IOLs from cornea donors. This method, however, does not make it possible to ascertain whether the scattering measured is caused by surface light scattering or internal light scattering.
authors.affiliation: Universidad de Valencia, Faculty of Physics, Optics Department, C/Dr. Moliner, 50 E46100, Burjassot, Valencia, SpainbFisabio Oftalmología Médica (FOM), Bifurcación Pío Baroja-General Avilés, s/n E46015-Valencia, Spain.
authors.forename: José M
authors.initials: JM
authors.lastname: Artigas
authors.affiliation: Universidad de Valencia, Faculty of Physics, Optics Department, C/Dr. Moliner, 50 E46100, Burjassot, Valencia, SpainbFisabio Oftalmología Médica (FOM), Bifurcación Pío Baroja-General Avilés, s/n E46015-Valencia, Spain.
authors.forename: Adelina
authors.initials: A
authors.lastname: Felipe
authors.affiliation: Fisabio Oftalmología Médica (FOM), Bifurcación Pío Baroja-General Avilés, s/n E46015-Valencia, Spain.
authors.forename: Amparo
authors.initials: A
authors.lastname: Navea
authors.affiliation: Universidad de Valencia, Faculty of Physics, Optics Department, C/Dr. Moliner, 50 E46100, Burjassot, Valencia, SpainbFisabio Oftalmología Médica (FOM), Bifurcación Pío Baroja-General Avilés, s/n E46015-Valencia, Spain.
authors.forename: M Carmen
authors.initials: MC
authors.lastname: García-Domene
authors.affiliation: Universidad de Valencia, Faculty of Physics, Optics Department, C/Dr. Moliner, 50 E46100, Burjassot, Valencia, Spain.
authors.forename: Álvaro
authors.initials: Á
authors.lastname: Pons
authors.affiliation: Fisabio Oftalmología Médica (FOM), Bifurcación Pío Baroja-General Avilés, s/n E46015-Valencia, Spain.
authors.forename: Jorge
authors.initials: J
authors.lastname: Mataix
mesh_terms: D007910:Lenses, Intraocular; D008027:Light; D008422:Materials Testing; D012542:Scattering, Radiation; D013053:Spectrophotometry / Q000379:methods*