Retrospective means looking back or examining something in the past, typically with a view to understanding it better. It can refer to an analysis or review of events that have already occurred, often involving reflection and evaluation.
I thought I would do a sort of retrospective of the past year. (singledatingdiva.com)
He is probably best known for his portrait photography, which was celebrated with a major retrospective at the National Portrait Gallery in 2001. (apollo-magazine.com)
The museum hosted a solo show of the artist's prints in 1974 and then the first major retrospective of his work in 1986. (artreview.com)