title: Influence of surface light scattering in hydrophobic acrylic intraocular lenses on laser beam transmittance.
abstract: The aim of this study was to experimentally examine the changes in the transmittances of photocoagulation lasers when surface light scattering increases in AcrySof intraocular lenses (IOLs). SA60AT IOLs (Alcon) were acceleratingly aging for 0, 3, 5, and 10 years to simulate surface light scattering, and the surface light-scattering intensities of both IOL surfaces were measured using a Scheimpflug photographer. The powers of laser beams that passed from a laser photocoagulator through the aged IOLs were measured at 532, 577, and 647 nm. Changes in the laser power and transmittance with the years of aging and the intensities of surface light scattering were examined. Although the intensity of surface light scattering increased with the years of aging, the laser power did not change with the years of aging (P > 0.30, Kruskal-Wallis test). There were no significant changes in the laser transmittance with the years of aging or the laser wavelength (P > 0.30 and 0.57, respectively). The intensity of surface light scattering revealed no significant association with the laser transmittance at any wavelength (P > 0.37, liner regression). The increases in the surface light scattering of the AcrySof IOLs would not influence retinal photocoagulation treatments for up to 10 years after implantation.
authors.affiliation: Department of Ophthalmology, Graduate School of Medicine, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan. shiraya01@gmail.com.
authors.forename: Tomoyasu
authors.initials: T
authors.lastname: Shiraya
authors.affiliation: Department of Ophthalmology, Graduate School of Medicine, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.
authors.forename: Satoshi
authors.initials: S
authors.lastname: Kato
authors.affiliation: Miyata Eye Hospital, Miyakonojo, Miyazaki, Japan.
authors.forename: Keiichiro
authors.initials: K
authors.lastname: Minami
authors.affiliation: Department of Ophthalmology, Graduate School of Medicine, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.|Miyata Eye Hospital, Miyakonojo, Miyazaki, Japan.
authors.forename: Kazunori
authors.initials: K
authors.lastname: Miyata
mesh_terms: D000180:Acrylic Resins; D006801:Humans; D057927:Hydrophobic and Hydrophilic Interactions; D017075:Laser Coagulation; D007834:Lasers; D007910:Lenses, Intraocular; D008954:Models, Biological; D055095:Optics and Photonics; D012542:Scattering, Radiation
chemical_list: D000180:Acrylic Resins
keywords: Accelerated aging; Laser photocoagulation; Laser transmittance; Subsurface nano-glistening; Surface light scattering