What is their focused range of vision?

The focused range of human vision refers to the area within the visual field where objects can be seen clearly without moving the eyes. This is commonly referred to as the central visual field or the foveal vision. It spans approximately 1-2 degrees of visual angle, which corresponds to the central 1-2% of the total visual field. This region is characterized by high visual acuity and color perception, allowing for detailed and precise visual analysis.