To develop and validate vision function (VF) and quality of life (QOL) instruments in patients with cataracts in the context of large volume surgery in a developing country.
The instruments were developed using a consensus approach.
One hundred patients who were undergoing cataract surgery at Aravind Eye Hospital, Madurai, India, were interviewed preoperatively and 3 and 12 months postoperatively.
Standard clinical procedures were followed, including measurement of visual acuity.
Between-interviewer reproducibility was measured by repeated administration of the preoperative questionnaire.
Within-interviewer reproducibility was measured preoperatively in a separate study of 50 patients.
Preoperative scores from the VF and QOL instruments were significantly associated with visual acuity (r=0.4).
Internal reliability (Cronbach a) was greater than .9. Both instruments showed large changes after surgery, with effect sizes of 3 or greater for most VF scales (range, 1.8-3.7) and 1 or greater for QOL scales (range, 1.0-2.2).
Changes in visual acuity after surgery were correlated with changes in the VF (r=0.44) and QOL (r=0.41) scale scores.
Between-interviewer reproducibility was acceptable (total VF scale, Spearman r=0.7 ; total QOL scale, r=0.74).
The K values were lower for within-interviewer reproducibility. (...)
Mots-clés Pascal : Cataracte, Inde, Asie, Vision, Qualité vie, Méthode mesure, Homme, Oeil pathologie, Cristallin pathologie, Segment antérieur pathologie
Mots-clés Pascal anglais : Cataract, India, Asia, Vision, Quality of life, Measurement method, Human, Eye disease, Lens disease, Anterior segment disease
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 97-0340627
Code Inist : 002B09G. Création : 12/09/1997.