10. Dr. Gilbert W.S. - Neuro-Oftalmologi
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Transcript of 10. Dr. Gilbert W.S. - Neuro-Oftalmologi
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NEURONEURO--OPHTHALMOLOGYOPHTHALMOLOGY
Dr. Gilbert WS SimanjuntakBagian IP Mata FK-UKI
SMF IP Mata RS PGI Cikini
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The eyes intimately related to the brain frequently give important diagnostic clues to CNS
disorders N2 is part of CNS Frequent visual disturbances because of destruction
of or pressure upon some portion of the optic pathways
N3,4,5,6 and 7
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Examination: Perimetry static or kinetic Relative afferent pupillary defect CT Scan/MRI
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Analysis of visual fields in localizing Analysis of visual fields in localizing lesions in the visual pathwayslesions in the visual pathways
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Rule of thumbRule of thumb
Lesions anterior to the chiasm (retina or N2) cause unilateral field defects Lesions posterior to the chiasm (anywhere in the
visual pathway) cause contralateral homonymous defects Congruent (identical in size, shape, and location) Incongruent
Chiasmal lesions usually cause bitemporal defects
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Relative scotoma: spreading disease Absolute scotoma: steep borders, vascular
disease/lesions The more congruous the homonymous field
defects (ie, the more similar the two hemifields), the farther posterior the lesion is in the visual pathway The more posterior the lesion, the more likely
there is to be macular sparing; maintenance of good visual acuity in both hemifields
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Optic nerve diseaseOptic nerve disease
Optic neuritis (papillitis and retrobulbar neuritis) Severe VA decreased, pain, rapd, central scotoma,
hyperemia of the optic disk and distention of large veins
Ischemic optic neuropathy Age persons (60-70s), VA decreased from mild to
light perception, pale disk in resolved acute process, altitudinal or central scotoma (occasionally)
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Papilledema (Choked disk) Associated with increased intracranial pressure
(cerebral tumors, abscesses, subdural hematoma, acquired hydrocephalus, A-V malformations, malignant hypertension)
Hyperemia of the disk, choroidal folds, hemorrhages, cotton-wool spots, VA relative normal
Optic nerve atrophy Vascular, degenerative, secondary to papilledema,
secondary to optic neuritis, pressure against the optic nerve, toxic, metabolic, traumatic, and glaucomatous
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THANK YOUTHANK YOU
NEURO-OPHTHALMOLOGYAnalysis of visual fields in localizing lesions in the visual pathwaysRule of thumbOptic nerve diseaseTHANK YOU