42K views · 428 reactions | OKN - Optokinetic Nystagmus - Optokinetic nystagmus (OKN) is a normal, involuntary eye reflex where the eyes slowly follow a moving visual stimulus (like stripes on a train window) and then quickly snap back to the starting point to re-fixate on the target. #nystagmus #optometry #opthalmology #FBVIDEO #visioncare #OptometryTips #fbreels #videoviralシ #eyecare #reels By Vision Scientist and @topfans Photo: MRCOPHTH | Vision Scientist | Facebook
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