DIAG 2740 Chapter 13 Outline

DIAG 2740 Chapter 13 Outline - Page 538 for test results...

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Chapter 13 2 pathways Nuclear and infranuclear- Supranuclear- Extraocular Muscles, Nerves, and Nuclei Rectus muscles and primary actions Superior- Inferior- Lateral- Medial- Action of Inferior Oblique- Action of Superior Oblique- Nerves of the Yoke Muscles LR VI + SO IV / III Diplopia Caused by: Diplopia History questions-
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Dysconjugate gaze- Which image is further displaced in the direction of gaze? Affected or unaffected eye? Diplopia Tests Red glass test- Cover-uncover test- Strabismus (Dysconjugate Gaze) Exotropia Esotropia Hypertropia Strabismus Muscle weakness Serious in children Suppression amblyopia- Oculomotor III Palsy Not SO and LR Down and out position Ptosis and mydriasis Diagonal diplopia see text page 537 for test results Diplopia is better far, worse near Caused by:
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Trochlear IV Palsy
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Unformatted text preview: Page 538 for test results Four steps to diagnosis 1. 2. 3. 4. Abducens VI Palsy Often caused by: Intranuclear opthalmoplegia What is it? What causes it? Which brainstem tract is involved? Pupillary Abnormalities Anisocoria- Horners syndrome sites of lesion: Marcus Gunn pupil Benign anisocoria- idiopathic and benign Pupillary Abnormalities Pharmaceutical = miosis Light near dissociation Eyes will react to near vision Eyes will not react to light Called: Caused by: Adies myotonic pupil-Cavernous Sinus Syndrome Which cranial nerves are affected? Orbital Apex Syndrome Which cranial nerves are affected? Parinauds Syndrome Gaze direction affected: Pupillary signs: Eyelid signs: Effect on convergence? Caused by:...
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DIAG 2740 Chapter 13 Outline - Page 538 for test results...

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