RAPD - Relative afferent pupillary defect

    This video demonstrates relative afferent pupillary defect (RAPD) in a patient with retinal detachment in one eye. Testing the pupillary reactions with the swinging flash light test shows defective conduction in the optic nerve of the involved eye. This test done in the initial part of the ocular examination is an important clue to the existence of serious pathology in the posterior segment/optic nerve. Common causes include optic neuritis, ischemic optic neuropathy and retinal detachment.


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