What is IVI-CAT?
IVI-CAT is a computerized adaptive testing (CAT) system that measures the impact of vision impairment on vision-related quality of life.
The IVI-CAT is based on the original 28-item paper-pencil IVI questionnaire, and the CAT algorithms were developed using data from patients with vision impairment and low vision.
IVI-CAT provides precise measurement vision-related quality of life using only 5–10 items, a reduction in items of 65-82% from the original paper-pencil IVI.
Domains and items in IVI-CAT
IVI-CAT provides precise measurement of overall
vision-specific quality of life and two sub-domains.
Vision-related quality of life
Items
Items
Activities of daily living and emotional well-being, as they are affected by vision
Vision-specific functioning
Items
Items
Restriction on participation in important activities of daily living
Emotional well-being
Items
Items
Emotional reactions and psychological effects
Publications
Main Publication
Development, psychometric testing and CAT simulations using data from over 800 patients with vision impairment.
Utilisation
Initial EMR Integration of IVI-CAT at SNEC (2021-2022)
IVI-CAT was implemented in cataract clinics at the Singapore National Eye Centre as part of an initial EMR integration pilot to measure the impact of vision impairment and cataract surgery on vision-related quality of life.
Hybrid Remote Deployment of Eye CATs at SNEC (2024–2025)
Eye-related CATs were implemented at the Singapore National Eye Centre using an automated remote and in-clinic hybrid model, achieving high patient uptake with full integration into the electronic medical record.
