IMPACT ASSESSMENT
PRISM
A tool unique to MFV for evaluating impact of interventions, PRISM assesses change in visual acuity as well as impact of cataract surgery on personal, social, economic, mobility, and psychological parameters of the life of a patient. An acronym for “Patient Related Impact Studying Mechanism,” the application – digital since 2016 – asks the patient 30 questions to determine change in quality of life and is administered twice: a few days before surgery and 6 months after surgery. The results show significant positive impact on multiple parameters with the visual outcomes after 6 months matching the WHO recommendations. It also confirms previous evidence on the value of cataract interventions. The app is a robust tool to gather valuable evidence on quality of life and helps MFV identify new areas for evidence generation and refinement.