"Optical distortion" refers to a situation where something appears different or distorted because of the way light is bent or refracted. Full definition
Using concepts of optical distortion within their individual artistic practice, the active exercise of «hand versus machine» is revealed using a variety of materials, transporting the viewer's visual experiences. (debuckgallery.com)
Micah Danges» (Pew Fellow, 2015) work hovers between image and object, pushing the limit of what a photograph can be and using optical distortions that create abstract scenes from everyday items and places, in a distinctive merging of materials and process. (pcah.us)
degree., and with optical distortion no greater than 2 % across the image» the patent further states. (ibtimes.com)