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Interior of posterior half of bulb of left eye The Veins are darker in appearance than the Arteries
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The terminal portion of the Optic Nerve and its entrance into the Eyeball , in horizontal section
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The 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 ).
The break in the
Visual Field created by the optic disk is also called the
Blind Spot .
