PSYCH 2NF3 Lecture Notes - Lecture 2: Visual Acuity, Olfactory Nerve, Color Vision
13 Oct 2018
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Conversation with patient: investigate case history, nattative of symptoms. Neuropsychological assessment: go down the cranial nerve. Cn i = olfactory nerve ask the patient to close their eyes and ask for them to identify the smell. Cn ii = optic nerve tests measure visual acuity, out recognition of light and dark. 20/20 test subject can see the same line of letters at 20 ft that a normal person sees at 20 ft. 20/30 test subject sees at 20 ft what a normal person sees at 40 ft color vision test check visual field. Fundus of the eye is opposite, and includes the retina, the optic disk, the macula and fovea. Light is at point of entry of optic nerve. Cn iii = oculomotor nerve whether the eyes can move around: ask the patient to move their eyes with the hand and this test checks ciii, cn iv= trochlear nerve and abducent nerve (vi)
