viewer

katselulaite

katselija Someone that views some spectacle; an onlooker or spectator.
2010, Antonio Saggio, A Secret van Gogh: His Motif and Motives, ISBN 9781447507932, (gbooks):

This sensation of an object becoming alive is a characteristic that, I believe, seizes all viewers of a van Gogh. The Bible goes beyond being a simple still-life object to become a living thing, an expression of strength, an existence that emanates from itself, beyond the painting surface to participate in our very lives.