Reports and research about amnesia are more common than reports and research about eidetic memory.
In his book, Memory 101, Dr. James Lampinen (2015) described amnesia to be memory loss and the reduction of memory abilities that is independent to other cognitive abilities. He also explained how the limitations and abilities of people with amnesia showed how memory is comprised of a number of independent systems. This is the most likely explanation of the multiple types of amnesia that have been observed and the multiple variants within each type. Variants could include factors such as; the kinds of memories lost, the number of memories lost, the amount of time they are lost, and the potential
causes.