Predictors of Functional Vision Changes After Cataract Surgery: The PROVISION Study

• Published in: Canadian journal of ophthalmology Vol. 51; no. 4; pp. 265 - 270
• Main Authors: Chaudhary, Varun, MD, FRCSC, Popovic, Marko, BHSc, Holmes, Julie, MHSc, Robinson, Tammy, RN, Mak, Michael, BHSc, Mohaghegh P, S. Mohammad, MD, Eino, Dalia, MD, FRCSC, Mann, Keith, MD, FRCSC, Kobetz, Lawrence, MD, FRCSC, Gusenbauer, Kaela, BHSc, Barbosa, Joshua, BHSc
• Format: Journal Article
• Language: English
• Published: England Elsevier Inc 01.08.2016
• Subjects: Age Factors; Aged; Aged, 80 and over; Cataract - physiopathology; Cataract Extraction; Cohort Studies; Educational Status; Female; Humans; Internal Medicine; Lens Implantation, Intraocular; Male; Ophthalmology; Prospective Studies; Pseudophakia - physiopathology; Sex Factors; Sickness Impact Profile; Surveys and Questionnaires; Time-to-Treatment; Visual Acuity - physiology
• ISSN: 0008-4182; 1715-3360
• DOI: 10.1016/j.jcjo.2016.02.010

Abstract Objective To ascertain whether time-to-treatment, sex, age, preoperative functional vision scores, education, and ocular comorbidities predict change in functional vision pre- to postoperatively in patients receiving cataract surgery. Design Prospective cohort study. Participants Three hundred and forty-three cataract patients at the Hamilton Regional Eye Institute. Methods Participants 18 years or older scheduled to undergo cataract surgery completed the Catquest-9SF functional vision questionnaire on the day of their surgery and were mailed a survey 2–3 months postoperatively. Multivariate linear regression was used to determine the ability of predictors to explain variability in functional vision change between questionnaire administrations. Results One hundred and sixty-six patients completed both baseline and follow-up questionnaires. Mean age of the cohort was 73.8 ± 8.1 years. Most patients were female (59.6%), had cataract surgery performed for the first time (66.9%), and had spent a mean time of 20.3 ± 20.7 weeks waiting for surgery. Functional vision improved in 83.7% of patients. The mean baseline Catquest-9SF score was the only significant predictor of functional vision improvement (adjusted R2 = 0.47; F 1,159 = 144.6; p < 0.001). Controlling for other variables, functional vision improved by 0.74 logits when mean baseline survey score increased by 1 logit. Conclusions In most patients, functional vision improved after cataract surgery. Mean baseline Catquest-9SF score was a moderate predictor of the observed improvement.