title: Objective measurement of wavefront aberrations with and without accommodation.
abstract: OBJECTIVE
  The measurement of the refractive error profile is more useful than corneal topography in understanding the complexities of refractive surgery. We report on experimental studies of the spatially resolved refractometer Tracey-1, developed in Ukraine by IBME in medical cooperation with VEIC, Greece.
  
  
  METHODS
  Ten eyes were subjected to dynamic measurement of accommodation, in order to test the effectiveness of Tracey refractometry. Measurements were performed in zones 0 to 6 mm. The refractive aberrations were calculated and accommodation was evaluated.
  
  
  RESULTS
  Evaluation of data shows that the instrument can effectively follow the dynamic change of refractive aberrations through the accommodation process.
  
  
  CONCLUSIONS
  Clinical tests of Tracey technology demonstrated the ability to investigate accommodation using this instrument.
authors.affiliation: Vardinoyannion Eye Institute of Crete, University of Crete, Greece. pallikar@med.uoc.gr
authors.forename: L G
authors.initials: LG
authors.lastname: Pallikaris
authors.forename: S I
authors.initials: SI
authors.lastname: Panagopoulou
authors.forename: C S
authors.initials: CS
authors.lastname: Siganos
authors.forename: V V
authors.initials: VV
authors.lastname: Molebny
mesh_terms: D000065:Accommodation, Ocular; D000328:Adult; D003315:Cornea / Q000473:pathology*; D019781:Corneal Topography; D006801:Humans; D008875:Middle Aged; D012030:Refractive Errors / Q000175:diagnosis*