Depth Perception: Depth perception is our ability to perceive objects in three dimensions and judge their distance from us. It helps us determine whether an object is close or far away.
Size Constancy: Size constancy is the phenomenon where we perceive objects as maintaining a constant size despite changes in their retinal image size. For example, even if an object appears smaller due to its distance from us, we know it still has its original size.
Retinal Disparity: Retinal disparity refers to the slight difference between the visual images received by each eye due to their slightly different positions. This disparity helps provide depth cues for our brain to perceive depth accurately.