What can be said of as the surface area of our field of vision? Isn't it a matter of fairly simplistic projective geometry to calculate this in exact m^2?
If a spherical head-encompassing thin paper mask with a radius of 1m was to be used, and someone's FOV was externally outlined on the outer surface of the mask by someone who had continuously checked where the person no longer sees some moving signal in the peripheral vision, would that alone be adept for determining the actual projected shape and area of the FOV on a metric unit sphere?
Is it that simple? On the other hand, how to optimize the center of the paper mask in relation to the person's head? Some kind of center of mass that is in accordance to the eye's position?
Yes, it was ambiguous to ask the area, what I'm interested in is the projected shape of the FOV on a surface with optimal curvature for this kind of projection. It might not be a spherical surface?