The term 'IT HAS A BLIND SPOT' can be solved by the word 'RETINA', which is a six-letter word. The RETINA is a light-sensitive layer of tissue at the back of the eye that is responsible for vision. It contains photoreceptor cells that convert light into electrical signals, which are then sent to the brain. The blind spot is an area of the RETINA where there are no photoreceptors, so it cannot detect light. This is why we cannot see objects directly in front of our eyes.