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The extant donning of, or, given: the "optical" has always been a means of breaking the fourth wall, over a Bayrle down optical watersheds scrambling one's retinas, blinking at the construction's winking, acknowledging the readymade biology of a viewer's eye's. Which, like trompe-l'œil, scenes in expectation of the viewer, pre-preparing its gamesmanship's inscrutable subject illuminated in a gassy light. Neatly packaged within the peephole of painting, the work await, reflecting, a viewer's head.
See too : Matthew Cerletty at Office Baroque