Improvements in visual ability with first-eye, second-eye, and bilateral cataract surgery measured with the Visual Symptoms and Quality of Life Questionnaire

Abstract

Purpose: To determine whether the Visual Symptoms and Quality of Life Questionnaire (VSQ), which was developed to be sensitive to second-eye cataract surgery, has satisfactory psychometric properties and, if so, to examine first-eye, second-eye, and bilateral cataract surgery outcomes. Setting: Ophthalmology Clinic, Flinders Medical Centre, Adelaide, Australia. Design: Cohort study. Methods: The 26-item VSQ was self-administered by cataract patients before and after cataract surgery and by those on the cataract surgery waiting list. The VSQ was revised by Rasch analysis using preoperative questionnaire data. The surgical outcome measures were logMAR visual acuities and the Rasch-refined VSQ...