title: [Measurement of accommodation using optical biometry].
abstract: BACKGROUND
  Making accommodation possible for all age groups is a topic of great interest. We applied optical biometry in order to study the physiological mechanisms in detail. Longitudinal relations in the optical axis were measured during accommodation in volunteers of different ages and lens states.
  
  
  METHODS
  A total of 60 subjects (children, adolescents, adults, and pseudophakes) were examined using the IOL Master. We measured anterior chamber depth (ACD), axial length (AL), and changes in these two measurements during accommodation.
  
  
  RESULTS
  Near accommodation (NA) in adolescents caused the largest ACD decrease (0.14+/-0.03 mm). ACD decreased in adults during NA but not in pseudophakic patients of comparable age. AL increased during NA in all groups by 0.01+/-0.01 mm.
  
  
  CONCLUSIONS
  ACD decreased with age. Using a physiological stimulus, no change in ACD was measured during NA in pseudophakic patients. The documented increase in AL needs to be evaluated further.
authors.affiliation: Augenklinik der TU München, Ismaninger Strasse 22, 81675 München, Deutschland.
authors.forename: A
authors.initials: A
authors.lastname: Nurispahic
authors.forename: K
authors.initials: K
authors.lastname: Kotliar
authors.forename: I
authors.initials: I
authors.lastname: Lanzl
mesh_terms: D000065:Accommodation, Ocular; D000293:Adolescent; D000328:Adult; D000375:Aging / Q000473:pathology / Q000502:physiology; D001699:Biometry / Q000379:methods*; D002648:Child; D006801:Humans; D007908:Lens, Crystalline / Q000473:pathology* / Q000503:physiopathology*; D008875:Middle Aged; D009887:Ophthalmoscopy / Q000379:methods*; D055095:Optics and Photonics; D019591:Pseudophakia / Q000175:diagnosis / Q000473:pathology* / Q000503:physiopathology*; D012680:Sensitivity and Specificity