title: Validation of the Spanish Catquest-9SF in patients with a monofocal or trifocal intraocular lens.
abstract: To validate the Spanish Catquest-9SF and study patient-reported visual function after implantation of a trifocal versus a monofocal intraocular lens (IOL).
  
  
  
  Clinica Baviera, Valencia and Madrid, Spain.
  
  
  
  Prospective case series.
  
  
  
  The Catquest-9SF was translated from English to Spanish according to a standard procedure. The Spanish version was validated through Rasch analysis. Patients completed the Catquest-9SF before cataract surgery and 3 months after the surgery. The change in patient-reported visual function caused by surgery, the level of achieved visual function, and satisfaction with vision after surgery were assessed for bilaterally implanted trifocal IOLs versus monofocal IOLs.
  
  
  
  The Spanish Catquest-9SF showed very good psychometric properties. Patient-reported achieved visual function was significantly better for those with a trifocal IOL than for those with a monofocal IOL (P < .001). This was also true when the groups were matched for age and ocular comorbidity (P = .006). In multivariate analyses of all cases and matched cases (the same age and no comorbidity), the reported visual function was significantly better with trifocal IOLs than with monofocal IOLs (P = .001 and P = .008, respectively). There was greater improvement after trifocal IOL implantation in the matched cases, although not significant (P = .103).
  
  
  
  Results show the Spanish version of Catquest-9SF is a valid patient questionnaire with good psychometric properties. Patients with a trifocal IOL implanted bilaterally reported better visual function than those with a monofocal IOL implanted bilaterally. The change in visual function after surgery was also greater in patients with a trifocal IOL.
  
  
  
  None of the authors has a financial or proprietary interest in any material or method mentioned.
authors.affiliation: From the Department of Clinical Sciences (Lundström), Ophthalmology, Faculty of Medicine, Lund University, Lund, Sweden; the Cataract and Refractive Surgery Unit (F. Llovet, Martinez del Pozo), Clinica Baviera, Madrid, the Cataract and Refractive Surgery Unit (Mompean), Clinica Baviera, Murcia, the Department of Research and Development (González), Clínica Baviera, Valencia, and Centro de Oftalmología Barraquer (A. Llovet), Barcelona, Spain; Flinders University (Pesudovs), Adelaide, South Australia, Australia. Electronic address: mats.lundstrom@karlskrona.mail.telia.com.
authors.forename: Mats
authors.initials: M
authors.lastname: Lundström
authors.affiliation: From the Department of Clinical Sciences (Lundström), Ophthalmology, Faculty of Medicine, Lund University, Lund, Sweden; the Cataract and Refractive Surgery Unit (F. Llovet, Martinez del Pozo), Clinica Baviera, Madrid, the Cataract and Refractive Surgery Unit (Mompean), Clinica Baviera, Murcia, the Department of Research and Development (González), Clínica Baviera, Valencia, and Centro de Oftalmología Barraquer (A. Llovet), Barcelona, Spain; Flinders University (Pesudovs), Adelaide, South Australia, Australia.
authors.forename: Fernando
authors.initials: F
authors.lastname: Llovet
authors.affiliation: From the Department of Clinical Sciences (Lundström), Ophthalmology, Faculty of Medicine, Lund University, Lund, Sweden; the Cataract and Refractive Surgery Unit (F. Llovet, Martinez del Pozo), Clinica Baviera, Madrid, the Cataract and Refractive Surgery Unit (Mompean), Clinica Baviera, Murcia, the Department of Research and Development (González), Clínica Baviera, Valencia, and Centro de Oftalmología Barraquer (A. Llovet), Barcelona, Spain; Flinders University (Pesudovs), Adelaide, South Australia, Australia.
authors.forename: Andrea
authors.initials: A
authors.lastname: Llovet
authors.affiliation: From the Department of Clinical Sciences (Lundström), Ophthalmology, Faculty of Medicine, Lund University, Lund, Sweden; the Cataract and Refractive Surgery Unit (F. Llovet, Martinez del Pozo), Clinica Baviera, Madrid, the Cataract and Refractive Surgery Unit (Mompean), Clinica Baviera, Murcia, the Department of Research and Development (González), Clínica Baviera, Valencia, and Centro de Oftalmología Barraquer (A. Llovet), Barcelona, Spain; Flinders University (Pesudovs), Adelaide, South Australia, Australia.
authors.forename: Mercedes
authors.initials: M
authors.lastname: Martinez Del Pozo
authors.affiliation: From the Department of Clinical Sciences (Lundström), Ophthalmology, Faculty of Medicine, Lund University, Lund, Sweden; the Cataract and Refractive Surgery Unit (F. Llovet, Martinez del Pozo), Clinica Baviera, Madrid, the Cataract and Refractive Surgery Unit (Mompean), Clinica Baviera, Murcia, the Department of Research and Development (González), Clínica Baviera, Valencia, and Centro de Oftalmología Barraquer (A. Llovet), Barcelona, Spain; Flinders University (Pesudovs), Adelaide, South Australia, Australia.
authors.forename: Blas
authors.initials: B
authors.lastname: Mompean
authors.affiliation: From the Department of Clinical Sciences (Lundström), Ophthalmology, Faculty of Medicine, Lund University, Lund, Sweden; the Cataract and Refractive Surgery Unit (F. Llovet, Martinez del Pozo), Clinica Baviera, Madrid, the Cataract and Refractive Surgery Unit (Mompean), Clinica Baviera, Murcia, the Department of Research and Development (González), Clínica Baviera, Valencia, and Centro de Oftalmología Barraquer (A. Llovet), Barcelona, Spain; Flinders University (Pesudovs), Adelaide, South Australia, Australia.
authors.forename: José-Vincente
authors.initials: JV
authors.lastname: González
authors.affiliation: From the Department of Clinical Sciences (Lundström), Ophthalmology, Faculty of Medicine, Lund University, Lund, Sweden; the Cataract and Refractive Surgery Unit (F. Llovet, Martinez del Pozo), Clinica Baviera, Madrid, the Cataract and Refractive Surgery Unit (Mompean), Clinica Baviera, Murcia, the Department of Research and Development (González), Clínica Baviera, Valencia, and Centro de Oftalmología Barraquer (A. Llovet), Barcelona, Spain; Flinders University (Pesudovs), Adelaide, South Australia, Australia.
authors.forename: Konrad
authors.initials: K
authors.lastname: Pesudovs
mesh_terms: D002387:Cataract Extraction; D006801:Humans; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D000071066:Patient Reported Outcome Measures; D011446:Prospective Studies; D011474:Prosthesis Design; D013030:Spain; D011795:Surveys and Questionnaires; D014792:Visual Acuity