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Fields

What is it?

During a routine eye exam, some eye doctors may want to determine through visual field testing the full horizontal and vertical range of what you are able to see peripherally. This range is commonly referred to as “side vision.”

While your head is held still, usually with a chin rest inside a large bowl-like instrument, you stare at a source of light straight ahead. Random lights of different intensities are flashed in your peripheral field of vision. You then press a button or use other means to indicate your response when you perceive the computer-generated light suddenly appearing in your field of view.

If you can’t see objects in an appropriate portion of your field of view, then you may have a blind spot indicating vision loss.

During a routine eye exam, some eye doctors may want to determine through visual field testing the full horizontal and vertical range of what you are able to see peripherally. This range is commonly referred to as “side vision.”

Visual field tests assess the potential presence of blind spots (scotomas), which could indicate eye diseases. A blind spot in the field of vision can be linked to a variety of specific eye diseases, depending on the size and shape of the scotoma.

Many eye and brain disorders can cause peripheral vision loss and visual field abnormalities.

Brain abnormalities such as those caused by strokes or tumors can affect the visual field. In fact, the location of the stroke or tumor in the brain can frequently be determined by the size, shape and site of the visual field defect.

Book a visual field test by calling us on 0113 266 3818 or click here to book it online.

Purpose of visual field testing

Provides information critical to:

  • Diagnosing ocular diseases, especially glaucoma
  • Evaluating neurological diseases
  • Monitoring the progress of ocular and neurological diseases

Visual field testing can lead to early detection and treatment of disease. In the case of glucoma, visual fields play a major role in identifying visual field defects and evaluating the efficacy of the therapy used to control the disease process.

Source: All About Vision



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