These Optokinetic Flags are 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.
Comes with a guide and is 27" (68 cm) long and 3.5" (8.9 cm) wide. The stripe segments are 1½" (4 cm) long. Available in Red & White and Black & White.Click here for OKN Guide