Do NOT allow the front sight to come into view.
Some people see it as a blur, others see a gray or a blue-gray object.
Add the front sight to your view. Step Four Let s add a target into your sight picture. Again, you ll notice that your eye has automatically put the target into the optical center of the rear sight and at the tip of the front sight. By now your eye is getting tired. The surface of your eye is starved for oxygen and you are watching a blood corpuscle go across the cornea of your eye.