title: [Prospective comparison of 2 multi-focal lens models].
abstract: BACKGROUND
  The functional results of two different types of multifocal intraocular lenses (based on the diffractive and refractive principle, respectively) were investigated prospectively.
  
  
  METHODS
  Altogether 50 patients who had a multifocal lens implanted were examined 4-6 weeks postoperatively. Visual acuity for distance and near vision, contrast sensitivity, low contrast visual acuity and glare visual acuity were investigated.
  
  
  RESULTS
  Distance visual acuity, contrast sensitivity, low contrast visual acuity and glare visual acuity did not show significantly different results. Near visual acuity was statistically significantly better with the diffractive type of multifocal lens (because of a stronger adjustment for near vision). When the focus depth was tested by defocus curves, both lenses had better results within different areas of defocus.
  
  
  CONCLUSIONS
  All patients in both groups showed satisfactory results. When choosing a multifocal intraocular lens, the individual needs of each patient should be taken into consideration.
authors.affiliation: Klinik und Poliklinik für Augenheilkunde, Charité und Virchow-Klinikum, Humboldt-Universität zu Berlin.
authors.forename: A
authors.initials: A
authors.lastname: Liekfeld
authors.forename: T
authors.initials: T
authors.lastname: Walkow
authors.forename: N
authors.initials: N
authors.lastname: Anders
authors.forename: D T
authors.initials: DT
authors.lastname: Pham
authors.forename: J
authors.initials: J
authors.lastname: Wollensak
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003867:Depth Perception; D005260:Female; D006801:Humans; D007910:Lenses, Intraocular; D008297:Male; D008875:Middle Aged; D055095:Optics and Photonics; D019904:Polymethyl Methacrylate; D011446:Prospective Studies; D011474:Prosthesis Design; D012029:Refraction, Ocular; D014792:Visual Acuity
chemical_list: D019904:Polymethyl Methacrylate
vernacular_title: Prospektiver Vergleich zweier Multifokallinsenmodelle.