title: Development and validation of a symptom  questionnaire for recording outcomes in adult  lacrimal surgery.
abstract: BACKGROUND
  A symptom-based questionnaire (the `Lac-Q` questionnaire) for adult patients undergoing lacrimal drainage surgery was developed. The questionnaire yields a numerical score that can be used to assess severity of symptoms.
  
  
  METHODS
  In this study, the questionnaire was evaluated in 17 consecutive patients undergoing 22 dacryocystorhinostomy (DCR) procedures. The questionnaire was administered pre- and postoperatively. The pathology encountered at operation was recorded. The success of surgery was judged by patient satisfaction, endoscopic evaluation of DCR stomal patency, and objective lacrimal drainage testing using the functional endoscopic dye test (FEDT). In a further group of 12 pre-operative cases, the questionnaire was repeated after 4-6 weeks but before surgery, to assess test-retest reliability in the absence of clinical change.
  
  
  RESULTS
  The Lac-Q questionnaire was based on two broad categories of eye-specific scores and social impact scores. A numerical score, the `Lac-Q` score, was generated pre- and postoperatively. When compared to pre-operative scores, the reduction in Lac-Q scores postoperatively was significant. Postoperative scores also correlated well with objective lacrimal drainage testing using the FEDT. Analysis of symptom scores shows that the questionnaire was reliable with regard to content validity, internal consistency, test-retest reliability, and responsiveness to clinical change.
  
  
  CONCLUSIONS
  We conclude that the Lac-Q questionnaire is a useful clinical tool to evaluate outcomes after adult lacrimal surgery.
authors: Department of Otolaryngology, Queen's Hospital, Burton upon Trent, Staffordshire, UK.
authors: N
authors: N
authors: Mistry
authors: T J
authors: TJ
authors: Rockley
authors: T
authors: T
authors: Reynolds
authors: C
authors: C
authors: Hopkins
mesh_terms: D000328:Adult; D003608:Dacryocystorhinostomy; D006801:Humans; D007766:Lacrimal Apparatus Diseases / Q000601:surgery*; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires; D016896:Treatment Outcome