In addition, we also tested the sensitivities of touch to various regions of our body to understand the somatosensory system.
The procedures on pages 32-38 of the lab manual (1) were followed.
Sketch of the retina:
Calculating the distance from the center of the blind spot to the fovea of my eye: Hi Di Hi 17mm Hi = 4.85mm Ho Do 87mm 305mm
Do is 305mm (12inches)
Di is a fixed distance of 17mm (distance of the lens to the retina)
Solve for Hi (distance from blind sport to fovea)
Ho is the distance from the center of the points to the cross
Diameter of cow eye: ~ 5mm
Diameter of the human blind spot: 1.11 mm
Distance corresponding to the separation of the images of 2 lines on the fovea: 0.008 mm
Distance corresponding to the separation of the images of 2 lines in an off-foveal region: 0.0151
1 We expected the distance of separation to be more in the fovea region than in the off-foveal region because of the density of photoreceptors in the fovea region than that of the off-foveal