Saccade

Saccade

Saccade is a rapid, ballistic movement of the eyes that abruptly changes the point of fixation. It is a fundamental aspect of visual perception and plays a crucial role in how humans and many animals visually explore their environment. In the context of design, saccades are particularly relevant to fields such as user experience (UX), user interface (UI), and visual communication. Designers must consider how saccadic eye movements influence the way users interact with and perceive visual information. For instance, in web design, the placement of key elements, such as navigation menus or calls-to-action, can be optimized based on understanding saccadic patterns. Similarly, in graphic design, the arrangement of visual elements can guide the viewer's saccades to create a desired flow or hierarchy of information. The study of saccades has also informed principles of typography, such as the optimal line length for readability, which takes into account the average saccadic range. Furthermore, saccades are closely linked to visual attention, and designers can leverage this knowledge to create layouts that effectively direct and hold the user's attention. Interestingly, the term saccade comes from an old French word meaning to pull a horse abruptly, reflecting the sudden, jerky nature of these eye movements.

Saccadic eye movement, visual perception, user experience, user interface, visual communication, web design, graphic design, typography, visual attention

— Stephan Trump

CITATION : "Stephan Trump. 'Saccade.' Design+Encyclopedia. https://design-encyclopedia.com/define/saccade?E=435935 (Accessed on October 14, 2026)"