Wow! I did not expect a 100% "yes" response to this...
Maybe everyone does it, like someone said here (?) But I guess it is NOT just my PTSD brain.
Also, the opposite occurs for me as well. If I loose something I really want to find, I can somehow "set" my eye to look for it and often find even the most small object. Like once I lost a small earring in a gravel parking lot. I "set" my eye to see it, and found it quickly. Another time a friend lost a cotter pin in the mud, and I "set" my eye for 'cotter pin' and found it. Many other examples. But then I do not see things that are right there if I am not expecting that thing.
There is a word for this eye "setting" thing that I came across once. I think they call it an "iconographic eye" or something. Does anyone know? It is a trait that apparently comes in handy for people who are archeologists.
Do others of you find you can "set" your eye when you are looking for something, even though you do not see things that are there that you are not expecting?