title: Success of Rigid Gas Permeable Contact Lens Fitting.
abstract: OBJECTIVE
  To assess the percentage of successful rigid gas permeable (GP) contact lenses (CLs) fit for both refractive and therapeutic reasons.
  
  
  METHODS
  New CLs (soft or GP) fittings were retrospectively analyzed and divided into refractive and therapeutic prescriptions. A standardized fitting protocol that included complete CLs information after a first eye examination, a diagnostic fitting visit, a dispensing visit, and a prescribing visit was used in all fittings. A GP fitting was defined as successful if full-time wear and optimal ocular surface physiology were both achieved at the review assessment 2 to 3 weeks after lens dispensing.
  
  
  RESULTS
  Of 232 new CLs fittings analyzed, 166 were refractive fittings (71.6%) and 66 were therapeutic (28.4%). Of the refractive fittings, 88 subjects (53%) were initially fitted with GP CLs and 61 (69.3%) of these met the criteria for successful GP fitting. Within this group, a different percentage of successful fits were found for neophyte (72%), previous soft lens wearers (62%), and previous GP wearers (92.3%). Of the therapeutic fittings, 61 subjects (92.4%) were initially fitted with GP CLs and 59 (96.7%) of these met the criteria for successful GP fitting.
  
  
  CONCLUSIONS
  Following a standardized CLs fitting protocol, a relatively high percentage of successful GP fits was achieved for refractive (7/10 subjects) and therapeutic (9/10 subjects) prescriptions. These results will improve the information available to patients and aid in their CL choices by providing them with a realistic attitude. It will also help eye care practitioners in their clinical activities by providing evidence-based information.
authors.affiliation: Departamento de Física Teórica (S.O.-T., G.R., V.d.J., R.M.), Atómica y Óptica, Universidad de Valladolid, Valladolid, España; Universidad de Valladolid (S.O.-T., G.R., V.d.J., R.M.), Instituto Universitario de Oftalmobiología Aplicada (IOBA), Valladolid, España; and Optometry Research Group (S.O.-T., M.M., G.R., V.d.J., R.M.), IOBA Eye Institute, School of Optometry, University of Valladolid, Valladolid, Spain.
authors.forename: Sara
authors.initials: S
authors.lastname: Ortiz-Toquero
authors.forename: Mario
authors.initials: M
authors.lastname: Martin
authors.forename: Guadalupe
authors.initials: G
authors.lastname: Rodriguez
authors.forename: Victoria
authors.initials: V
authors.lastname: de Juan
authors.forename: Raul
authors.initials: R
authors.lastname: Martin
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D003261:Contact Lenses; D004867:Equipment Design; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D008875:Middle Aged; D055656:Prescriptions; D012029:Refraction, Ocular; D012030:Refractive Errors / Q000503:physiopathology / Q000628:therapy*; D012189:Retrospective Studies; D013997:Time Factors; D016896:Treatment Outcome; D055815:Young Adult