Remember the early, op-art work of Larry Poons ? It's been so long now that it's even hard to find examples of the older work on the net. Fortunately someone has picked up the baton and updated this oeuvre.
Jon Thompson is represented by the Anthony Reynolds Gallery and it's a treat to go back chronologically through the 22 examples of his work. This image is from the current group show at Kusseneers where he's in great company.