title: Long-term observation of surface light scattering in a foldable acrylic intraocular lens.
abstract: OBJECTIVE
  To observe time-course changes in surface light scattering after Acrysof intraocular lens (IOL) implantation over 6 years postoperatively and its influence on visual function.
  
  
  METHODS
  Miyata Eye Hospital, Miyakonojo, Miyazaki, Japan.
  
  
  METHODS
  Retrospective comparative case series.
  
  
  METHODS
  Clinical records of eyes that had implantation of an Acrysof IOL (Group 1) or another IOL model (AR40 or Clariflex) (Group 2) were evaluated. Postoperative examinations including light scattering on the anterior surface of the IOL, corrected distance visual acuity (CDVA), and contrast sensitivity were performed 1 month and 3 years postoperatively. The same examinations were performed over the extended postoperative period, allowing analysis of time-course changes in surface light scattering and visual function.
  
  
  RESULTS
  The study evaluated 24 eyes, 14 in Group 1 and 10 in Group 2. The mean time to the last postoperative examination was 8.4 years ± 1.0 (SD) (range 6.5 to 10 years). Surface light scattering in Group 1 increased, even after 3 years, at a rate of 12.02 computer-compatible tapes per year. Scattering did not increase in Group 2. The CDVA remained unchanged 3 to 6 or more years postoperatively in both groups. There was no difference in contrast sensitivity between the 2 groups 6 or more years postoperatively.
  
  
  CONCLUSIONS
  Surface light scattering increased in Group 1, even after 3 years postoperatively; however, it did not affect visual function.
  
  
  BACKGROUND
  No author has a financial or proprietary interest in any material or method mentioned.
authors.affiliation: From the Miyata Eye Hospital, Miyakonojo, Japan. Electronic address: kmiyata@miyata-med.ne.jp.
authors.forename: Kazunori
authors.initials: K
authors.lastname: Miyata
authors.affiliation: From the Miyata Eye Hospital, Miyakonojo, Japan.
authors.forename: Masato
authors.initials: M
authors.lastname: Honbo
authors.affiliation: From the Miyata Eye Hospital, Miyakonojo, Japan.
authors.forename: Ryohei
authors.initials: R
authors.lastname: Nejima
authors.affiliation: From the Miyata Eye Hospital, Miyakonojo, Japan.
authors.forename: Keiichiro
authors.initials: K
authors.lastname: Minami
authors.affiliation: From the Miyata Eye Hospital, Miyakonojo, Japan.
authors.forename: Shiro
authors.initials: S
authors.lastname: Amano
mesh_terms: D000180:Acrylic Resins; D000368:Aged; D015350:Contrast Sensitivity / Q000502:physiology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D008027:Light; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification; D019591:Pseudophakia / Q000503:physiopathology*; D012189:Retrospective Studies; D012542:Scattering, Radiation; D013997:Time Factors; D014617:Vacuoles; D014792:Visual Acuity / Q000502:physiology*
chemical_list: D000180:Acrylic Resins