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May 1, 2023 · The optic chiasm, or optic chiasma, is the part of the brain where the optic nerves cross and is therefore of primary importance to the visual pathway. It is located at the base of the brain inferior to the hypothalamus, and approximately 10 mm superior to the pituitary gland within the suprasellar cistern.
Oct 30, 2023 · The optic chiasm is located at the base of the brain, just anterior and superior to the location of the pituitary gland. It is formed by merging fibers from the optic nerves. The optic chiasm contributes in conveying visual information from the eye to the cortex.
In neuroanatomy, the optic chiasm, or optic chiasma (/ ɒ p t ɪ k k aɪ æ z əm /; from Greek χίασμα 'crossing', from Ancient Greek χιάζω 'to mark with an X'), is the part of the brain where the optic nerves cross. It is located at the bottom of the brain immediately inferior to the hypothalamus.
Apr 29, 2024 · The optic chiasm’s primary function is creating binocular vision, depth perception, and hand-eye coordination. When it sustains damage from disease or is compressed by a tumor, it can cause vision field loss or blindness.
May 25, 2022 · The optic chiasm is the x-shaped structure caused by the crossing of the optic nerves in the brain. Learn more about this structure and its diseases.
May 12, 2021 · The optic chiasm is a vital part of the brain’s visual pathway, and its health is essential for clear and comfortable binocular vision. Since it’s an internal structure of the eye, however, it can be difficult to know when there’s a problem with the optic chiasm.
Jan 22, 2018 · The optic chiasm or optic chiasma is an X-shaped space, located in the forebrain, directly in front of the hypothalamus. Crucial to vision, the left and right optic nerves intersect at the...
The optic chiasm is sensory and conveys visual information towards the cortex. It sends axons into the optic tracts. By allowing nasal retinal fibers from one optic nerve to cross to the contralateral optic tract, the optic chiasm allows all right visual field information to travel to the left hemisphere of the brain, and all left visual field ...
Dec 16, 2014 · Within the middle cranial fossa, the optic nerves from each eye unite to form the optic chiasm. At the chiasm, fibres from the nasal (medial) half of each retina cross over to the contralateral optic tract, while fibres from the temporal (lateral) halves remain ipsilateral:
The optic chiasm represents a confluence of optic nerve fibers from each eye converging anteriorly and diverging posteriorly. The optic chiasm is approximately 10-20 mm in diameter transversely, 4-13 mm wide anteroposteriorly, and 3-5 mm in thickness (Hoyt, 1969; Rizzo, 2005; Whitnall, 1932).
