Diagnosis Clinical evaluation Neuroimaging (See also How to Assess the Cranial Nerves.) Evaluation of neuro-ophthalmologic and cranial nerve disorders includes the following: Detailed questioning about symptoms Examination of the visual system Tests to detect nystagmus Examination of the cranial nerves Visual system examination includes ophthalmoscopy and testing of visual acuity, visual fields, pupils, and eye movements (ocular motility).