Useful Field of View

The useful field of view (UFOV) is the area of the visual field from which a person can extract information in a single glance without moving their eyes or head. Unlike the anatomical visual field, the UFOV is a measure of functional vision that depends on cognitive processing capacity — specifically, the ability to attend to and process visual information quickly. The UFOV narrows with age, meaning older adults effectively see and process less of a visual display at once than younger adults. In interface design, this has direct implications for accessibility: important UI elements placed outside a user's UFOV may go completely unnoticed, particularly in complex, information-dense displays like mobile maps. Research has shown that older adults often fail to notice navigation options, tabs, or buttons that are visually present on screen but outside their reduced attentional spotlight.