<unk>  is a form of visual discomfort, arising from viewing repetitively striped<unk> s, such as those of op art. Instead of the<unk> s' appearing as they are, they may appear to move, to shimmer, or to vary in shape over time.
Pattern glare
Instrument myopia
Tunnel vision
Scintillating scotoma
Bullous keratopathy
Band keratopathy
Exposure keratopathy
Ametropic amblyopia