Vision is a fundamental biological, cognitive, and technological function that underpins human interaction with the world. Vision sciences encompass the systematic study of visual systems, from optical image formation and retinal processing to cortical perception, cognition, and artificial visual intelligence. In the 21st century, advances in neuroscience, artificial intelligence, data science, biomedical engineering, and human–machine interfaces have expanded the scope of vision science beyond traditional disciplinary boundaries.

World Vision Science Day (WVSD) is established to formally recognise vision sciences as a critical multidisciplinary domain that shapes healthcare, technology, education, accessibility, and human augmentation. It provides a structured global platform for scholarly exchange, translational innovation, and educational advancement in vision-related sciences.

Observed annually on 4th February, World Vision Science Day unites academia, clinical practice, industry, and policy-oriented stakeholders to advance rigorous research, responsible innovation, and global collaboration in vision science.