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Do not base your order on the picture presented.
This optokinetic flag is used to produce optokinetic nystagmus (OKN) physiologic jerk in a patient's eyes. This is elicited when the patient attempts to fixate on moving, alternative, contrasting squares that are moved in the field of vision.
Available in 3 different segment sizes:
Comes with instructions and OKN Flag is 28" (71.12 cm) long.
Medex SKU: GL-607700