What the sensor stores: the square raster
What it covers: directions around the gaze, true angles
Purple lines are every 16th raster row and column; orange circles are eccentricity 2°, 5°, 10°, 20° and the rim. Hover or tap either picture.
Spacing between neighbouring samples against eccentricity: radial (purple) grows linearly, as the spacing law asks; tangential (teal) grows more slowly, so peripheral pixels are long and thin.