Everything revolves around a centre. The earth pirouettes around a molten core. The solar system hums to the rhythm of the sun. Cities pulse with life around their downtowns. A newborn baby at a ...

Scientists have developed contact lenses that allow people to see in the dark. In an extra futuristic twist, they even work better when people have their eyes closed.

Featured Heteronymous hemianopia. This type of hemianopia is caused by a lesion on your optic chiasm. This is the area in your brain where the optic nerves cross and form an “X.” ...

The optic chiasm is the place within the brain where some of the nerves from each eye cross. An MRI can also show any other brain abnormalities that may be present.

The optic chiasm is an X-shaped structure formed by the crossing of the optic nerves in the brain. The optic nerve connects the brain to the eye. To biologists, the optic chiasm is thought to be a ...

Behind the optic chiasm, some of the nerve fibres from each eye form the optic tracts, which terminate in the thalamus (Dover et al, 2023). Optic radiations are then formed, which travel through the ...

As the tumor grows, it may compress the optic chiasm, a critical structure directly above the pituitary gland. This is where the optic nerves from each eye cross and then project to the brain.

Craniopharyngiomas can also compress the optic chiasm or optic nerves, which may lead to vision problems. Craniopharyngiomas and pituitary adenomas are two types of benign pituitary gland tumors.

To facilitate the recovery of visual function after injury, axons of neurons must regenerate through the optic nerve and relay nerve impulses to visual targets in the brain via the optic nerve for ...