No, it would not be permanent in daily life, but it would be a sign of danger when the eye floaters are increased in sudden. Eye floaters or black spots usually move in and out of vision, changing position with eye movement. In fact, the number of floaters tends to increase with age. It is a common condition for almost every person has a few floaters in the eye, especially when you are looking at bright background like blackboard. It is normally caused by stress, lack of nutrients, fatigue, mood and other factors. It would come and go naturally when you adjust yourself and life style. However, it would be a sign of serious eye disorders, such as retinal detachment, if it is permanent.