The visions can also bring on strong emotion, as can any part of the LSD experience. One can get emotionally involved in the action of what they are seeing in the visions and it can have great meaning for the person in a therapeutic way. Somehow, the LSD produces visions that can involve the person in symbolic personal dramas that can lead to the solution of some personal problem. The person can see the solution in a way that was impossible before. In the vision, the person may see a beautiful palace or temple in the distance and feel that if they can just get to it, they will be saved. It will be salvation, but there are obstacles in the way and it is a dangerous adventure. There can be strange creatures warning the person not to try it, telling them that no one who has ever tried it has ever made it and that no one has ever come back. If the person goes on anyway, they'll make it and when they do, they'll know that they have really made it. The person needed to go through this adventure in order to solve some problem that they were having with their life. LSD can bring on just the vision a person may need in order to solve a problem.

Masters and Houston go into this in The Varieties of Psychedelic Experience. When they refer to eidetic images, they mean the visions you get with the eyes closed. This is from page 147:

"The eidetic images become of major importance on this symbolic level as does the capacity of the subject to feel that he is participating with his body as well as his mind in the events he is imaging. Here, the symbolic images are predominantly historical, legendary, mythical, ritualistic and 'archetypal'. The subject may experience a profound and rewarding sense of continuity with evolutionary and historical processes. He may act out myths and legends and pass through initiations and ritual observances often seemingly structured precisely in terms of his own most urgent needs."

Masters and Houston have more on this in The Varieties of Psychedelic Experience. This is from pages 213-214:

"Few of the drug-state phenomena are more perplexing, fascinating and potentially valuable than is the subject's participation in mythic and ritualistic dramas which represent to him in terms both universal and particular the essentials of his own situation in the world. These analogic and symbolic dramas occur most characteristically on the third or symbolic level of our functional model of the drug-state psyche. They often are sequentially preceded on this level by the subject's experiencing of historical events and evolutionary processes, usually of less value, but not less likely to perplex and fascinate."

"When the historical events are experienced the subject may observe these as spectator only or he may have the sense of being a participant in the event. These battles, coronations, witch trials, crusades or whatever, enters into consciousness and may be eidetically imaged in intricate and voluminous detail. The historical materials may seem to have no empirical antecedents for the subject and concerning this apparently groundless knowledge it is only possible to speculate more or less plausibly. Similarly, the subject may observe or feel himself to be a part of evolutionary process, seemingly becoming aware of the whole or a part of the pattern of emerging life on this earth and its progression towards the present point in time. Again, the subject may display a knowledge that remains inexplicable should we insist upon discovering its source in what he is aware of having read, seen or heard about."