There's no tint of pain, real pain, in the sensations of the
optic nerve. If you wound the
optic nerve, you merely see flashes of light,-- just as disease of the auditory nerve merely means a humming in our ears.
In the Articulata we can commence a series with an
optic nerve merely coated with pigment, and without any other mechanism; and from this low stage, numerous gradations of structure, branching off in two fundamentally different lines, can be shown to exist, until we reach a moderately high stage of perfection.
Just as a photographic plate receives a different impression of a cluster of stars when a telescope is part of the intervening medium, so a brain receives a different impression when an eye and an
optic nerve are part of the intervening medium.
In the common mole the eye is extraordinarily small but perfect, though many anatomists doubt whether it is connected with the true
optic nerve; its vision must certainly be imperfect, though probably useful to the animal when it leaves its burrow.
The light from it had beat upon his sealed lids, and the eyes and the
optic nerves had pulsated to little, sparklike flashes, warm-coloured and strangely pleasing.
And it seemed to me that his eyes were strange, not only the expression, but the physical seeming, as though the
optic nerves and supporting muscles had suffered strain and slightly twisted the eyeballs.
[USA], Aug 24 (ANI): Researchers found new mechanisms that enables the regeneration of nerve fibers, which could open up new treatment approaches for the brain,
optic nerve, and spinal cord injuries.
They do this by stimulating the
optic nerve with a new type of intraneural electrode called OpticSELINE.
ENPNewswire-August 20, 2019--EPFL:
Optic nerve stimulation to aid the blind
Fact.MR has announced the addition of the "
Optic Nerve Disorders Drugs Market Forecast, Trend Analysis & Competition Tracking - Global Market Insights 2018 to 2026"report to their offering.
Summary:
Optic nerve disorder, commonly known as optic neuropathy, is a medical condition indicating degeneration of the
optic nerve.
It discusses comparison to fluorescein angiography, terminology, and interpretation of inner and outer retinal disorders, including diseases of the
optic nerve head, along with case studies of inner retinal pathology, outer retinal disease, diseases of the choroid, and
optic nerve disease.
optic nerve - the cranial nerve that serves the retina