bitemporal hemianopsia

Bitemporal hemianopsia - The loss of the fields closest to the temples.

In addition to a long list of possible symptoms, the most common presentation include: headaches, growth failure, and bitemporal hemianopsia.

This phenomenon is known as bitemporal hemianopsia.

"Bitemporal hemianopsia" can be broken down as follows:

Knowing the neurocircuitry of visual signal flow through the optic tract is very important in understanding bitemporal hemianopsia.

Bitemporal hemianopsia most commonly occurs as a result of tumors located at the mid-optic chiasm.

Bitemporal hemianopsia (due to pressure on optic chiasma)

In bitemporal hemianopsia vision is missing in the outer (temporal or lateral) half of both the right and left visual fields.

Damage in the chiasm causes loss of vision laterally in both visual fields (bitemporal hemianopsia).

Compression of the optic chiasm can lead to bitemporal hemianopsia, and, when there is no relevant trauma, this clinical finding is pathognomonic for a pituitary tumor.

Aneurysms of the anterior communicating artery are the most common circle of Willis aneurysm and can cause visual field defects such as bitemporal hemianopsia, psychopathology and frontal lobe pathology.

One important variety of bilateral scotoma may occur when a pituitary tumour begins to compress the optic chiasm (as distinct from a single optic nerve) and produces a bitemporal paracentral scotoma, and later, when the tumor enlarges, the scotomas extend out to the periphery to cause the characteristic bitemporal hemianopsia.