title: Estimation of anterior nucleus of lens by Scheimpflug image before and after pupil dilatation.
abstract: OBJECTIVE
  To compare the accuracy of lens transparency evaluations by Scheimpflug image in the anterior nucleus of the lens before and after pupil dilatation.
  
  
  METHODS
  Scheimpflug lens images were recorded in 70 eyes of 38 subjects (age: 28-75 years) before and after pupil dilatation, and light scattering intensity measurements before and after dilatation were compared.
  
  
  RESULTS
  There was a significant positive correlation between the light scattering intensity before and after dilatation at the anterior cortex, anterior nucleus, and central clear zone of the lens (r > 0.9, P <.0001).
  
  
  CONCLUSIONS
  It is possible to estimate the transparency in the anterior nucleus of the lens from the Scheimpflug image without pupil dilatation. If nuclear type cataracts are regarded as a structural marker of aging in epidemiological studies, measuring the light scattering intensity in the anterior nucleus of the lens without dilatation seems to be a safe, useful, and quantitative method.
authors.affiliation: Department of Epidemiology, National Institute for Longevity Sciences, Obu, Aichi, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Nomura
authors.forename: H
authors.initials: H
authors.lastname: Shimokata
authors.forename: N
authors.initials: N
authors.lastname: Niino
authors.forename: F
authors.initials: F
authors.lastname: Ando
authors.forename: J
authors.initials: J
authors.lastname: Sugita
authors.forename: Y
authors.initials: Y
authors.lastname: Miyake
mesh_terms: D000328:Adult; D000368:Aged; D000869:Anterior Eye Segment / Q000033:anatomy & histology; D003941:Diagnostic Techniques, Ophthalmological; D006801:Humans; D007904:Lens Cortex, Crystalline / Q000033:anatomy & histology / Q000502:physiology; D007907:Lens Nucleus, Crystalline / Q000033:anatomy & histology* / Q000502:physiology; D008027:Light; D008875:Middle Aged; D011680:Pupil; D015203:Reproducibility of Results; D012542:Scattering, Radiation