Trick of the Trade: OKN drum to test psychogenic coma
Optometry club - Optokinetic Nystagmus (OKN) is a normal reflex to a fast moving stimulus that stabilizes a large retinal image. Tested clinically with an OKN drum, reflex will stop in darkness. .
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Optokinetic Nystagmus testing
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Optokinetic Nystagmus testing
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Good-Lite Optokinetic Drum, 10" - Medex Supply
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12. A mouse performing the vision test in the optokinetic drum. | Download Scientific Diagram