WebSep 15, 2024 · Traumatic optic neuropathy (TON) refers to an acute injury of the optic nerve secondary to trauma. The optic nerve axons may be damaged either directly or indirectly, and the visual loss may... WebOrigin of the inferior oblique muscle: a small bony depression in the anteromedial orbital floor behind the edge of the orbital rim, just lateral to the anterior lacrimal crest. 3. Medial …
Skull: Foramina, fissures and contents Kenhub
WebSep 24, 2024 · Paired optic foramen; back of the eye socket; optic nerve (CN II) and ophthalmic artery. In the image, this aperture is labelled as number 2 (1 = ethmoid … WebMar 22, 2024 · The optic canal is a cylindrical canal running obliquely through the lesser wing of sphenoid bone near the base where it joins the body of sphenoid. It transmits the optic nerve and ophthalmic artery (and its associated sympathetic fibers). The optic canal opens into the skull base at the optic foramen. how to shop for gold chains
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WebMar 30, 2024 · The iris and ciliary body are a product of the anterior rim of the optic cup (Figure 5). The inner and outer layers of the anterior rim, induced by surrounding mesenchymal development, give rise to the posterior and anterior portions of iris epithelium respectively. The intrinsic muscles of the iris (sphincter pupillae and dilator pupillae) are … WebJan 17, 2024 · To the rear of the orbit, the optic foramen opens into the optical canal through which the optic nerve and ophthalmic artery pass. The primary functions of the orbit include protection of its delicate contents and, through muscle attachment and a smooth coating fascia, to also promote the smooth, delicate movements of the eye. WebMar 20, 2024 · The optic disc is the area of the retina where the optic nerve enters and can be visualised using an ophthalmoscope. Common causes include: Intracerebral mass lesions Cerebral haemorrhage Meningitis Hydrocephalus In papilloedema, the high pressure within the cranium resists venous return from the eye. nottingham city fair access protocol