Red dot sights
do not have a solid, round dot. None of them. They are made up of many tiny dots. This goes for holographic sights, also. The higher the intensity level, the more they bleed. Your eye has a lot to do with it, also. A dot that looks clean to one person looks elongated or fuzzy to others. For instance, most people will view a dot differently with one eye than the other. Lasers are different, and the quality of the dot has to do with the quality of the laser and the glass that it is being shown through.