When someone makes the statement “I can’t see pictures”, this is of course a generalisation, which they are feeding back from their own unique perspective (no pun intended!). Often they will have some sense of visual location, but their pictures may “not yet” be in focus.
Many people will indicate that they can “imagine” seeing something as opposed to “seeing something”, if you ask them to! The use of language therefore plays a key part in how our attention is directed and when working with someone it’s useful to listen to their own language patterns and phrasing to facilitate easy communication.