In the long aphorism xi of the second book of
Wittgenstein 's
Philosophical Investigation s Wittgenstein makes a distinction between "seeing" and "seeing as".  To "see as" is something one learns to do.  It is based on a technique that one masters.  One might look at a map, say, without recognizing it for what it is.  But with a bit of training one learns to see the map differently and to use it as a guide around the city.  Before one does that, one has to learn to see as, that is to see the scriggly lines as streets.