Science Theory: Human Vision Shape

What is vision? Vision is the faculty or state of being able to see. Humans see with their eyes as most of you know. The human eye is closest to a sphere, then any other shape. Our pupil (the little black thing), is a circle. Similarly, our iris (the colored thing that surrounds the eye), our lens (the part beneath the pupil and iris), and our cornea (which is the tiny bulge over the pupil and the iris), are mostly circles. However, just because most of our eye parts are circles and spheres, does that mean that the shape we see in, will also be a circle? What I mean by 'shape', is the area that we are able to see.  Look around you. You just see the things around you. However, what you don't realize is the area in which you see. What shape do you see in? Looking into infinity, it is very hard to explain the shape- that's why their is an easier way. Go to a nearby wall, or to a table. Now, stand in such a way that your nose will be touching the wall/table. Note: The farther away you step away from the wall while doing the experiment, the larger the image, and vice versa. Once you decide the distance of your eyes to the wall stare at one point parallel to your glabella (See picture below image).


Keep concentrating at that specific point without moving your eyes in any direction (it's okay if you are cross eyed while doing it). Now, bring your index finger into view on the top right- but barely, so that you can only just see your finger nail. Now make a little mark at the point that you can barely see your finger, without moving your eyes. Do the above steps 3 more times, at the top left, bottom left, and bottom right. When you mark all those spots (without moving your eyes) start getting a little bit more specific. Try to put your index finger at a point between the top right and top left, and make the length in between marks smaller and smaller. You will eventually begin to see a frame or shape. Once you begin to see a noticeable pattern, frame, line, or shape. You can now step away from the wall and view what you did other than writing on your wall. This is the Human Vision Shape. What intrigued me with my H.V.S was that it was not a geometric figure. I mean I wasn't expecting a perfect circle, but I wasn't expecting what I got either. The closest shape to mine is probably a trapezoid. Of coarse, there are many variables to what size and what shape your H.V.S is, like how wide you open your eyes, or if you move them a bit, maybe even your race (maybe if you are Asian, then the shape is smaller). I got my shape, with my eyes at a natural 'state'(I wasn't forcefully making them wider), and with my nose on a table, with a piece of paper, however the picture you see is a rough computer drawing of what I got.