title: Vision function versus vision testing.
authors.forename: Roger F
authors.initials: RF
authors.lastname: Steinert
mesh_terms: D002386:Cataract / Q000175:diagnosis* / Q000503:physiopathology*; D002387:Cataract Extraction; D006801:Humans; D007910:Lenses, Intraocular; D014787:Vision Tests; D014785:Vision, Ocular; D014792:Visual Acuity