title: Frequency doubling technology perimetry after clear and yellow intraocular lens implantation.
abstract: OBJECTIVE
  To evaluate the effect of intraocular lens (IOL) color on frequency doubling technology (FDT).
  
  
  METHODS
  Randomized clinical trial.
  
  
  METHODS
  For 26 eyes of 26 patients, FDT perimetry (24-2-threshold test) was measured three months after cataract surgery. An acrylic IOL was randomly selected from clear (VA60BB, HOYA) and yellow-tinted lenses (YA60BB, HOYA), which only differed by color. As a control, a further 14 cataractous eyes with visual acuity > or =20/30 were examined. We analyzed mean deviation (MD) and pattern standard deviation (PSD) among the three groups.
  
  
  RESULTS
  After cataract surgery, MD significantly improved (Fisher protected least significant difference (PLSD): P < .05), but PSD did not change (analysis of variance (ANOVA): P = .94) compared with control values. There was no significant difference between the two IOLs for either MD (Mann-Whitney test; P = .15) or PSD (Mann-Whitney test; P = .84).
  
  
  CONCLUSIONS
  When interpreting the results of FDT, the effect of cataract should be considered but that of IOL color does not need consideration.
authors.affiliation: Department of Ophthalmology, Nara Medical University, Nara, Japan. tueda@naramed-u.ac.jp
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Ueda
authors.forename: Takeo
authors.initials: T
authors.lastname: Ota
authors.forename: Eiichi
authors.initials: E
authors.lastname: Yukawa
authors.forename: Yoshiaki
authors.initials: Y
authors.lastname: Hara
mesh_terms: D003116:Color; D006801:Humans; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D018918:Phacoemulsification; D012160:Retina / Q000502:physiology; D014792:Visual Acuity / Q000502:physiology*; D058609:Visual Field Tests / Q000379:methods*; D014794:Visual Fields / Q000502:physiology*