What is temporal hemianopia?

What is temporal hemianopia?

Bitemporal hemianopsia (or bitemporal hemianopia) describes the ocular defect that leads to impaired peripheral vision in the outer temporal halves of the visual field of each eye.

What causes temporal hemianopia?

Bitemporal hemianopsia most commonly occurs as a result of tumors located at the mid-optic chiasm. Since the adjacent structure is the pituitary gland, some common tumors causing compression are Pituitary adenomas, and Craniopharyngiomas. Also another relatively common neoplastic etiology is Meningiomas.

What is monocular temporal hemianopia?

Monocular temporal hemianopia is attributed to involvement of the ipsilateral optic nerve close enough to the chiasm to selectively impair conduction in crossing nasal retinal fibres from the ipsilateral eye, but too anterior to affect crossing nasal retinal fibres from the contralateral eye.

What is a temporal defect?

Lesions of nasal retinal axons cause temporal field defects. If the nasal axons nearest the macula are spared, the resulting field defect shows sparing of the parafixational temporal hemifield (Figure 116.6).

How do you manage temporal hemianopia?

How is hemianopia treated?

1. wearing prismatic correction glasses to help with double vision.
2. getting vision compensatory training to help you use your remaining vision more efficiently.
3. undergoing vision restoration therapy to improve visual information processing.

What is right homonymous Hemianopsia?

Hemianopsia, or hemianopia, is a visual field loss on the left or right side of the vertical midline. It can affect one eye but usually affects both eyes. Homonymous hemianopsia (or homonymous hemianopia) is hemianopic visual field loss on the same side of both eyes.

What is a temporal field?

A temporal field was an energy form which had been closely related to instances of time travel. Known to be created both naturally and artificially, temporal fields could be dispersed by exposure to tachyon particles. ( VOY: “Coda”)

Can you recover from hemianopia?

In a 15-year longitudinal study, Zhang et al. (2006b) analyzed spontaneous recovery in hemianopia patients. They observed recovery approximately 38.4% of the cases within the commonly accepted period of 6 months (after which, the HH becomes chronic).

What causes temporal hemianopia in the right eye?

Right homonymous hemianopiais a loss of vision in the temporal half of the visual field of the right eye and the nasal half of the visual field of the left eye. Common causes are occlusion of the posterior cerebral artery (stroke), trauma and tumours.

What’s the difference between left and right homonymous hemianopia?

Left homonymous hemianopia is a loss of vision in the temporal half of the visual field of the left eye and the nasal half of the visual field of the right eye. Right homonymous hemianopia is a loss of vision in the temporal half of the visual field of the right eye and the nasal half of the visual field of the left eye.

Can a 15 year old girl have temporal hemianopia?

Customize your JAMA Network experience by selecting one or more topics from the list below. A 15-year-old girl was found to have temporal hemianopia of the left eye. Her visual acuity was 20/20 OU and she had normal color discrimination bilaterally. Left afferent pupillary defect was present.

How is hemianopsia classified in the visual field?

With hemianopsia, you can see only part of the visual field for each eye. Hemianopsia is classified by the part of your visual field that’s missing: bitemporal: outer half of each visual field homonymous: the same half of each visual field