Looking through a microscope is read as close attention to details that others overlook. Dream books also see in it the feeling of being scrutinised, of every small flaw being magnified.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.