What is optical tract?
The optic tract is a bundle of nerve fibers that serves to carry visual information from the optic chiasm to the left and right lateral geniculate bodies as a part of the visual pathway.
Why is it called the optic tract?
The optic tract (from the Latin tractus opticus) is a part of the visual system in the brain. It is a continuation of the optic nerve that relays information from the optic chiasm to the ipsilateral lateral geniculate nucleus (LGN), pretectal nuclei, and superior colliculus.
What is the difference between the optic tract and the optic nerve?
The key difference between Optic Nerve and Optic tract is that the Optic nerve is the nerve that connects your eye to the brain while the Optic tract is a part of the visual system of our brain. Eyes are organs of our visual system.
Where are the optic tracts?
The optic tract is an extension of the optic nerve located in the brain. It begins at the area where information from the left eye and right eye cross (or “decussate”) to create a complete visual picture. The optic tract is actually comprised of two separate tracts: the left optic tract and the right optic tract.
What supplies the optic tract?
The blood supply of the optic tract is supplied by thalamic perforators of the posterior cerebral artery and branches of the anterior choroidal artery off the internal carotid artery. Each optic tract contains fibers from the contralateral hemifield.
What is the optic tract responsible for?
visual information
The optic tract is a bundle of nerve fibers that serves to carry visual information from the optic chiasm to the left and right lateral geniculate bodies as a part of the visual pathway.
Is the optic tract part of the CNS?
The optic nerve is a CNS structure arising from the diencephalon. As a CNS structure, the optic nerve is myelinated by oligodendrocytes and is ensheathed in the three meningeal layers.
What part of the brain is responsible for eyesight?
Occipital lobe. The occipital lobe is the back part of the brain that is involved with vision.
Where are optic radiations?
The optic radiation (also known as the geniculocalcarine tract, the geniculostriate pathway, and posterior thalamic radiation) are axons from the neurons in the lateral geniculate nucleus to the primary visual cortex.
Which structure is end of optic tract?
The optic tracts terminate in the lateral geniculate nucleus, which contains the cell bodies of the final neurons relaying information to the visual cortex, in the optic radiations.
What brain problems affect vision?
Problems with blood vessels in the brain, including bleeding, are the most common cause of problems in the optic chiasm, but tumors and trauma can also result in chiasm disorders. The symptoms can be disabling, affecting the person’s ability to read and visually scan and navigate the world around them.
What does optic radiation control?
The human optic radiation (OR) is the main pathway for conveying visual input to occipital cortex, but it is unclear whether it projects beyond primary visual cortex (V1).
Which cells are involved in direct optic brain pathway?
The visual pathway begins with photoreceptors in the retina and ends in the visual cortex of the occipital lobe. The photoreceptors are cells of two types: rods and cones. Rods play a special role in peripheral vision and in vision under low light conditions.
Where do the optic tracts lead to?
The optic tract then extends caudally and laterally to end in the lateral geniculate bodies of the thalamus.
What is an eye neurologist called?
Neuro ophthalmologists specialize in vision problems that relate to your nervous system. Such issues include vision problems due to brain injuries or diseases, including trauma, a stroke, or an infection.