title: Visual outcomes with the yellow intraocular lens.
abstract: OBJECTIVE
  To compare postoperative best distance visual acuity (VA), contrast sensitivity and colour perception with the blue light-filtering AcrySof Natural (SN60AT) and AcrySof single-piece (SA60AT) intraocular lenses (IOLs).
  
  
  METHODS
  This was a prospective, randomized, comparative, interventional study comparing postoperative performance between the SN60 and SA60 IOLs. There were nine patients (nine eyes) in the SN60 group and 10 patients (10 eyes) in the SA60 group. All patients were operated using phacoemulsification. Postoperative VA (Snellen chart), contrast sensitivity (Pelli-Robson contrast sensitivity chart) and colour perception (Farnsworth-Munsell D-15 panel test) were measured at 1, 3 and 6 months postoperatively.
  
  
  RESULTS
  Postoperative best corrected VA after 6 months was 20/20 or better in 89% of SN60 eyes and 100% of SA60 eyes. Postoperative contrast sensitivity scores improved significantly in both groups under both photopic and mesopic conditions. There were no statistically significant differences in contrast sensitivity scores between the SN60 and SA60 groups at any of the postoperative evaluation time-points. Postoperative colour perception improved significantly in both the SN60 and SA60 groups, and there were no statistically significant differences in colour perception performance between the two groups.
  
  
  CONCLUSIONS
  The blue light-filtering AcrySof Natural (SN60) IOL has postoperative visual performance comparable with that of the AcrySof single-piece (SA60) IOL.
authors.affiliation: Department of Ophthalmology and Visual Sciences, Royal Adelaide Hospital, University of Adelaide, South Australia, Australia.
authors.forename: Igal
authors.initials: I
authors.lastname: Leibovitch
authors.forename: Tze
authors.initials: T
authors.lastname: Lai
authors.forename: Neroli
authors.initials: N
authors.lastname: Porter
authors.forename: George
authors.initials: G
authors.lastname: Pietris
authors.forename: Henry
authors.initials: H
authors.lastname: Newland
authors.forename: Dinesh
authors.initials: D
authors.lastname: Selva
mesh_terms: D000180:Acrylic Resins; D000368:Aged; D003118:Color Perception / Q000502:physiology*; D015350:Contrast Sensitivity / Q000502:physiology*; D005260:Female; D006801:Humans; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D008297:Male; D018918:Phacoemulsification; D010865:Pilot Projects; D011184:Postoperative Period; D011446:Prospective Studies; D011474:Prosthesis Design; D016896:Treatment Outcome; D014792:Visual Acuity / Q000502:physiology*
chemical_list: D000180:Acrylic Resins