| Further studies show that EphB1 expressed restrictedly in ventrotemporal RGCs and epherin-B2 located specifically in the chiasm midline. |
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| Pressure on the optic chiasm can result in visual defects or even blindness. |
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| The optic tract and radiation may spread pathology from the optic chiasm to both temporal lobes. |
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| The optic nerve extending from the posterior aspect of the eye to the optic chiasm is really not a nerve at all. |
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| At the optic chiasm the optic nerve fibres from the nasal halves of the right and left retinas cross to the opposite side. |
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| In addition to the effects of excess GH, a pituitary tumour itself can cause severe headaches, and pressure of the tumour on the optic chiasm can cause visual defects. |
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| By compressing the underside of the optic chiasm, these tumours cause visual deficits, and they raise the intracranial pressure through compression of the hypothalamus and third ventricle. |
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| The tumour partially encased the carotids, and compressed the optic chiasm. |
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| The SCN, located in the hypothalamus just above the optic chiasm, controls a person's circadian rhythm. |
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| Visual defects occurred in some, secondary to pressure in the area of the optic chiasm from associated hydrocephalus. |
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| Optic neuritis is bilateral and severe or associated with a swollen optic nerve or chiasm lesion or an altitudinal scotoma. |
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| Instead, they can prohibit the formation of the optic chiasm. |
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| Subsequent magnetic resonance imaging of the brain, with and without contrast, performed with attention directed toward the chiasm was normal. |
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| Initial imaging revealed a space-occupying, non-enhancing lesion in the optic chiasm. |
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