| 21. | Axons form the RGCs will grow and extend towards the optic disc, where they exit the eye.
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| 22. | The retina and optic disc are normal.
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| 23. | Papilledema, or the swelling of the optic disc, can be a reliable sign that ICP is elevated.
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| 24. | Preflight images of normal optic disc.
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| 25. | The optic disc in a normal human eye carries from 1-1.2 million neurons from the eye towards the brain.
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| 26. | A posterior remnant may be seen where the artery left the optic disc, and is known as Bergmeister's papilla.
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| 27. | These vascular risk factors lead to ischemia ( poor blood supply ) to a portion of the optic disc.
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| 28. | This requires that other concerning findings such as papilledema ( swelling of the optic disc ) are not present.
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| 29. | In addition, green channel filtering can be used to detect center of optic disc in conjunction with double-windowing system.
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| 30. | Postflight right and left optic disc showing grade 1 ( superior and nasal ) edema at the right optic disc.
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