title: Comparison of tilt and decentration of 1-piece and 3-piece hydrophobic acrylic intraocular lenses.
abstract: OBJECTIVE
  To determine the amount of tilt and decentration of 1-piece and 3-piece hydrophobic acrylic intraocular lenses (IOLs) in patients having cataract surgery.
  
  
  METHODS
  Department of Ophthalmology, Gulhane Military Medical Academy and Medical School, Ankara, Turkey.
  
  
  METHODS
  Eighty-eight patients having phacoemulsification with IOL implantation were divided into 2 groups. One group received a 3-piece hydrophobic acrylic IOL with 12.5 mm poly(methyl methacrylate) haptics and the other, a 1-piece hydrophobic acrylic IOL with 12.5 mm haptics. The amount of IOL decentration and tilt was quantitated using Purkinje reflections and photographic documentation at the last postoperative control. The results of the 2 groups were compared.
  
  
  RESULTS
  Bag fixation of the IOL and an intact continuous curvilinear capsulorhexis (CCC) were confirmed in all cases at the last postoperative control, which was at a mean of 27.1 months +/- 5.4 (SD) and 26.7 +/- 4.4 months in the 3-piece group and 1-piece group, respectively (P = 0.659). There was no significant difference between groups in the percentage of patients with measurable tilt and decentration and of patients without measurable tilt and decentration (P = .956). The mean IOL tilt was 2.72 +/- 0.55 degrees in the 3-piece group and 2.70 +/- 0.84 degrees in the 1-piece group and the mean IOL decentration, 0.39 +/- 0.13 mm and 0.34 +/- 0.08 mm, respectively. There were no significant between-group differences in tilt or decentration (P = .897 and P = .103, respectively).
  
  
  CONCLUSIONS
  There were no significant differences in tilt and decentration between 1-piece and 3-piece hydrophobic acrylic IOLs in eyes with capsular bag IOL implantation and an intact CCC.
authors.affiliation: Department of Ophthalmology, Gülhane Military Medical Academy, Ankara, Turkey. fmmutlu@hotmail.com
authors.forename: Fatih Mehmet
authors.initials: FM
authors.lastname: Mutlu
authors.forename: Cüneyt
authors.initials: C
authors.lastname: Erdurman
authors.forename: Güngör
authors.initials: G
authors.lastname: Sobaci
authors.forename: Mehmet Zeki
authors.initials: MZ
authors.lastname: Bayraktar
mesh_terms: D000180:Acrylic Resins; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D005548:Foreign-Body Migration / Q000503:physiopathology*; D006801:Humans; D057927:Hydrophobic and Hydrophilic Interactions; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification; D011474:Prosthesis Design; D019591:Pseudophakia / Q000503:physiopathology*
chemical_list: D000180:Acrylic Resins