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Is visual field screening necessary?

Although it is a subjective test that many patients do not particularly enjoy, it is the standard test for assessing vision loss. It is also used to determine the severity of the glaucoma and is the most sensitive way to check if the glaucoma is getting worse, which is why visual field tests are repeated periodically.

Then, does visual field need test?

A visual field test is performed at the initial visit or as soon as glaucoma is suspected. It evaluates vision loss due to glaucoma, damage to the visual pathways of the brain, and other optic nerve diseases. When glaucoma is diagnosed the visual field data is used to determine the severity of disease.

Subsequently, question is, can visual field test be wrong? There are many ways to evaluate the visual field; a standard automated perimetry is only one of them. The tests are subjective, however, and they are often difficult for patients to perform. As a result it is not rare to have false positives or false negatives.

Also, how often do you need a visual field test?

Among patients with a threat to fixation, visual field testing is usually performed every 4 to 8 months, and consideration should be given to alternating between evaluation of the central 10° and the central 24° to 30°.

What can a visual field test detect?

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. It can also be used to monitor the progression of previously known visual field loss.

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