FIGURE 9-20 Visual-Field Demonstration As you focus on the cross at center, information at the left of this focal point forms the left visual field (red) and travels to the right hemisphere. Information to the right of the focal point forms the right visual field (blue) and travels to the left hemisphere. The visual field can be split horizontally as well: information above the focal point is in the upper visual field and that below the focal point is in the lower visual field.