Open Saved tracing

Hi all, I did some tracings in ImageJ a couple of years ago and I need to do some training on how to trace the pictures, but I can’t figure out how to open the .tiff file I saved that shows the tracing I did - how can I open a past saved tracing? Its on a work computer so I unfortunately don’t have the rights to download any addons or plugins so hoping there is a way to do it through original ImageJ softward. Thanks!