[Albion Wilde]

I guess I was thinking of what was called “op-art.”

I agree; the picture you used combined elements of both, but is closer to Op Art. Actually, it's not really "art", but a graphic design or illustration, and not a very good one. The range of images below should give you more of a comparison:

Images of Op Art

Images of Psychedelic Art

[sparklite2]

Op art gives me a headache.
Psychedelic art gives me a buzz.