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Where is the lesion if the patient has homonymous hemianopsia?,”Contralateral
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Read moreWhat is a junctional scotoma?
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Read moreWhat is the most common etiology of hemianopias?,”Stroke, posterior to the chiasm.The more posterior the lesion
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Read moreWhat is the DDx for disc edema without increased ICP?,”1. Glaucoma2. Anterior ischemic optic neuropathy (AION)
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Read moreWhat is the most common cause of optic neuritis? What is an important exam for suspected optic neuritis?,”MS. Usually less than 45 years old. Central scotoma with colour vision deficit. RAPD. There will be a deficit
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Read moreWhat is the approach to diplopia?,”Get them to close an eye to determine binocular or monocular diplopia. Binocular:1. Neurogenic – CNs, internuclear ophthalmoplegia (INO), myasthenia gravis2. Mechanical – orbital wall fracture, orbital tumour, Grave’s orbitopathyMonocular:1. Cornea (deformity, keratoconus)2. Lens (cataract
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Read moreWhat is the approach to CN III palsies?,”Pupil involving – compression lesions, e.g aneurysm at posterior communication artery, compressing the outer nerve fibres of CN 3 which control the pupil dilationPupil sparing – ischemic dz like DM
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Read moreWhat is the approach to CN IV palsies? What is the most common cause?,”Acquired – traumatic (long fragile nerve), ischemic (DM
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Read moreWhat is the approach to CN VI palsies?,”Ischemia – DM
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