visual angle

Visual angle refers to the apparent size of an object as seen by the eye, measured in degrees. It describes how large an object appears on the retina, depending on its actual size and distance from you. For example, a small object close up may have the same visual angle as a large object far away. The larger the visual angle, the more space the object takes up on your retina, making it seem bigger. This concept helps us understand perception, distance, and size differences in visual experiences without relying solely on real-world measurements.