what region is known as the blind spot
Seeing the blind spot Each eye has a surprisingly large blind region, about 4Â° of visual angle, the width across your four fingers held at arm's length. Luckily, they are in different locations in each eye, the one in the left eye is about 10Â° (two hand widths at arm's length) to the left of central vision, and the one in the right eye, equally far out on the other side.