Where does the optic nerve enter the eye?
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Through what does the optic nerve enter the eye?
optic canal
A blind spot, scotoma, is an obscuration of the visual field. A particular blind spot known as the "physiological blind spot", "blind point", or "punctum caecum" in medical literature, is the place in the visual field that corresponds to the lack of light-detecting photoreceptor cells on the optic disc of the retina where the optic nerve passes through the optic disc. Because there are no cells to detect light on the optic disc, the corresponding part of the field of vision is invisible. Some process in our brains interpolates the blind spot based on surrounding detail and information from the other eye, so we do not normally perceive the blind spot.
Where does the optic nerve pass through to enter the eye?
optic disc
Blind spot (vision)
Blind spot (vision)
https://en.wikipedia.org/wiki/Blind%20spot%20%28vision%29
Optic nerve
https://en.wikipedia.org/wiki/Optic%20nerve
The optic nerve, also known as cranial nerve II, or simply as CN II, is a paired cranial nerve that transmits visual information from the retina to the brain.
Optic nerve
The optic nerve leaves the orbit (eye socket) via the optic canal, running postero-medially towards the optic chiasm, where there is a partial decussation (crossing) of fibers from the temporal visual fields (the nasal hemi-retina) of both eyes.
Optic nerve Structure
The optic disc or optic nerve head is the point of exit for ganglion cell axons leaving the eye.
Optic disc Function
The optic nerve, also known as cranial nerve II, is a paired cranial nerve that transmits visual information from the retina to the brain. The optic nerve leaves the orbit, or eye socket, via the optic canal, running postero-medially towards the optic chiasm, where there is a partial decussation of fibers from the temporal visual fields of both eyes. The optic nerve passes through the optic disc to enter the eye. The optic disc or optic nerve head is the point of exit for ganglion cell axons leaving the eye.