title: [First results with a new aberration correcting bifocal intraocular lens].
abstract: OBJECTIVE
  To investigate the functional results with a new bifocal intraocular lens.
  
  
  METHODS
  The *Acri.LISA (*Acri.Tec) was implanted bilaterally in 20 patients after uneventful cataract surgery. The new bifocal IOL has a light distribution of 65% for distance and 35% for the near range. The diffractive optics of the lens are designed to be independent of pupil size. Smooth steps in diffractive structure should reduce glare. An aspheric design of the posterior optic surface is engineered to counteract the asphericity of the cornea (-0.26). Postoperative evaluation included 6 weeks after surgery: uncorrected (UCVA) and best corrected (BCVA) visual acuity for distance (ETDRS charts) and near (C.A.T. charts, Birkhäuser charts) monocular and binocular, defocus curve, contrast sensitivity under photopic and mesopic lighting conditions (F.A.C.T.), and subjective assessment of halos
  
  
  RESULTS
  At the 6-week follow-up mean binocular UCVA and BCVA (LogMAR) were -0.02+/-0.10 and -0.07+/-0.09, respectively, for distance. Near UCVA (LogMAR) was 0.09+/-0.16; distance corrected near VA was 0.04+/-0.13. Visual acuity was significantly superior when tested binocularly compared to monocular testing (p<0.01). The depth of field showed an intermediate decimal VA of 0.6+/-0.21 at 70 cm and a pseudoaccommodation range of 5.5 D. Of 20 patients, 16 reported slight halos, but no patient was seriously impaired.
  
  
  CONCLUSIONS
  The *Acri.LISA showed very good visual performance 6 weeks after bilateral surgery.
authors.affiliation: Bundesknappschaftskrankenhaus, An der Klinik 10, 66280 Sulzbach. HKaymakMD@aol.com
authors.forename: H
authors.initials: H
authors.lastname: Kaymak
authors.forename: U
authors.initials: U
authors.lastname: Mester
mesh_terms: D001251:Astigmatism / Q000534:rehabilitation* / Q000601:surgery*; D002386:Cataract / Q000628:therapy*; D002387:Cataract Extraction; D005260:Female; D006801:Humans; D019654:Lens Implantation, Intraocular / Q000379:methods*; D007910:Lenses, Intraocular; D008297:Male; D010865:Pilot Projects; D011474:Prosthesis Design; D016896:Treatment Outcome