title: Depth of focus.
authors.forename: Mark
authors.initials: M
authors.lastname: Packer
authors.forename: I Howard
authors.initials: IH
authors.lastname: Fine
mesh_terms: D019923:Capsulorhexis; D003867:Depth Perception / Q000502:physiology*; D006801:Humans; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D018918:Phacoemulsification; D011446:Prospective Studies; D012029:Refraction, Ocular / Q000502:physiology*; D014792:Visual Acuity / Q000502:physiology*