>>11913252>well then how could you even focus on one finger? why cant you view two fingers in one conjoined image?You can "view" them, you can't "focus" on them, because that's not possible with the way our eyes are designed. You can only bring into "focus" the field of vision within the fovea, meaning if you hold out your own two fingers, the image is going to fall outside of that area of focus.
"The fovea—the 1% of your visual field at the center that has high resolution—is small. To see how small, hold your arm out, stick up your thumb, and focus on your thumbnail. At arm’s length, your thumbnail is about the size of your fovea. The rest of your visual field can be considered peripheral vision, with significantly lower resolution [Johnson, 2014]."
"Peripheral vision is the ability to see things where you are not directly looking—“out of the corner of your eye.” Even in young people with normal vision, peripheral vision is poor [Johnson, 2014]."
"First, peripheral vision provides low-resolution cues to guide our eye movements so that our fovea visits all the interesting and crucial parts of our visual field. Our eyes don’t scan our environment randomly. They move so as to focus our fovea on important things, the most important ones (usually) first. The fuzzy cues on the outskirts of our visual field provide the data that helps our brain plan where to move our eyes, and in what order."
