Blind Spot in Human Eye!

The blind spot, in the eye explains why many a times though an object is in front of our eyes but invisible.

Just as this spot may go unnoticed by most of the rays that fall on our eye; it is correct that a ray which falls on this spot goes unnoticed too...... thereby explaining the fact our look of the world is biased and skewed!!!
Every one of us is blind, some to complete others to limited extent, depending on the size of this blind spot...