What is Superotemporal defect?

As opposed to the defect described by Traquair, some authors have used the term to refer to an ipsilateral optic neuropathy with a contralateral superotemporal visual field defect. This superotemporal defect is caused by compression of the inferonasal fibers from the contralateral eye traveling in Wilbrand’s knee.

What does an abnormal visual field test mean?

Abnormal results may be due to diseases or central nervous system (CNS) disorders, such as tumors that damage or press on (compress) the parts of the brain that deal with vision. Other diseases that may affect the visual field of the eye include: Diabetes. Glaucoma (increased eye pressure)

What is normal VFI?

The central points have more weight than the peripheral points. The VFI can range from 100% (normal visual field) to 0% (perimetrically blind field).

What disease causes visual field defects?

Causes of visual field defects are numerous and include glaucoma, vascular disease, tumours, retinal disease, hereditary disease, optic neuritis and other inflammatory processes, nutritional deficiencies, toxins, and drugs.

What visual field defects indicate glaucoma?

Relatively specific glaucomatous visual field defects (see Figure ​3 for examples) include:

  • a nasal step defect obeying the horizontal meridian.
  • a temporal wedge defect.
  • the classic arcuate defect, which is a comma-shaped extension of the blind spot.
  • a paracentral defect 10–20° from the blind spot.

Can a visual field test detect a brain tumor?

The test maps central vision as well as peripheral (side) vision. The test is performed by an ophthalmologist and is used to detect areas of vision loss (blind spots) caused by a brain tumor, stroke, glaucoma, diabetes, hypertension, or head trauma.

Can you tell if you have a brain tumor from an eye test?

A regular, routine eye test can sometimes detect eye problems that indicate the presence of a brain tumour before any symptoms become obvious. An eye test is particularly good at identifying any swelling of the optic disc (a condition called papilloedema) and can also identify when there is pressure on the optic nerve.

What does VFI mean on a field vision test?

The visual field index (VFI) is a new global metric that represents the entire visual field as a single number. It is estimated by calculating age corrected defect depth at the test points identified as significantly depressed in pattern deviation probability maps.

Which visual field test is best for glaucoma?

Static testing in general is superior to kinetic perimetry in detecting slopes and scotomata (field defects), and tends to be more reliable and consistent, particularly for detecting glaucomatous visual field loss.