terminology – Term “Eye load”?

I am missing a term to describe the mental load which is needed for a human to parse a large menu.

For example I want to switch to google forms:


My eyes need to parse the symbols and/or text to find the right place to click.

I would call it “eye load” but I think this term does not exist.

If you compare this to an autocomplete solution, where a user can enter a text, then an autocomplete solution needs much less “eye load”.

Is there a common UX term for this?