title: [Comparison of contrast sensitivity and wavefront analysis after implantation of AcrySof IQ aspherical intraocular lens].
abstract: OBJECTIVE
  To determine vision quality when testing two acrylic intraocular lenses, AcrySof IQ and AcrySof Natural, after routine cataract extraction and IOL implantation.
  
  
  METHODS
  Prospective, randomized, double-masked study that 260 eyes of patients who underwent cataract extraction and IOL implantation was performed. Patients were randomly divided into 2 groups: AcrySof IQ or AcrySof Natural. One week, one and three month postoperative evaluations included contrast sensitivity and wavefront analysis. The independent-samples T test was used. P < 0.05 was considered statistically significant.
  
  
  RESULTS
  The AcrySof IQ group has significantly higher and middle spatial frequency of contrast sensitivity. The difference in low spatial frequency was getting significant along with time. Patients with AcrySof IQ had a reduction in total high-order aberrations and spherical aberration. There were no difference in coma between two groups.
  
  
  CONCLUSIONS
  The use of aspheric acrylic AcrySof IQ IOL may improve the quality of vision as a result of the reduction of contrast sensitivity and spherical aberration.
authors: Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China. qiangson@sh163.net
authors: Min
authors: M
authors: Luo
authors: Jing
authors: J
authors: Ji
authors: Chun
authors: C
authors: Zhao
authors: Xian-qun
authors: XQ
authors: Fan
authors: Yi-lei
authors: YL
authors: Pan
authors: Jian-feng
authors: JF
authors: Lu
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D002386:Cataract / Q000503:physiopathology* / Q000628:therapy*; D015350:Contrast Sensitivity; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification; D011184:Postoperative Period; D011446:Prospective Studies; D014785:Vision, Ocular; D014792:Visual Acuity