Interior of posterior half of bulb of left eye. The veins are darker in appearance than the arteries.
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| colspan="2" |The terminal portion of the optic nerve and its entrance into the eyeball, in horizontal section.
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|Latin
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|colspan="2"|[subject #225 ]
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|System
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|Precursor
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|MeSH
|colspan="2"|[A08.800.800.120.680.660]
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|Dorlands/Elsevier
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The optic disc or optic nerve head is the point in the eye where the optic nerve fibres leave the retina; it is not sensitive to light and thus is also known as "the blind spot" or "anatomical blind spot". Inspection of the optic disc by ophthalmoscopy can give an indication of glaucoma and other optic neuropathies, optic neuritis, or papilledema (i.e. optic disc swelling produced by raised intracranial pressure).
Schematic diagram of the human eye, with the optical disc, or blind spot, at the bottom.
