What is eye relief in relation to scope usage?

Eye relief refers to the positioning of the eye in relation to the scope, specifically the distance from the rear lens of the scope to the shooter's eye. Proper eye relief ensures that the shooter can see the full field of view within the scope without experiencing any image distortion or blackouts. Maintaining the correct eye relief is crucial for effective aiming and to protect the shooter’s eye from recoil injury, particularly with high-caliber firearms. This positioning allows the user to have a clear and unobstructed image while ensuring comfort during use.