What is a 10-2 visual field test?

Use of a central 10 degrees field and size V stimulus to evaluate and monitor small central islands of vision in end stage glaucoma.

What do the numbers mean on a visual field test?

The visual threshold is the intensity of stimulus seen 50% of the time at each location. The threshold values of each tested point are listed in decibels in the sensitivity plot. Higher numbers mean the patient was able to see a more attenuated light, and thus has more sensitive vision at that location.

How long does a 10-2 visual field take?

The test, which measures the central and side vision for each eye, takes approximately 5-10 minutes, and you can blink normally throughout.

What is Humphrey visual field test?

The Humphrey visual field is a diagnostic test to measure visual fields, or perimetry. The Humphrey visual field test measures the entire area of peripheral vision that can be seen while the eye is focused on a central point.

How do you read a Humphrey visual field?

Use this order to interpret your Humphrey visual field every time:

1. Confirm it’s the right patient with name and date of birth.
2. Confirm it’s the right/left eye.
3. Look at the reliability indices.
4. Look at the pattern.
5. Look at the GHT, mean deviation, VFI, and pattern standard deviation.
6. Compare to the previous visual fields.

How do you read visual field test results?

What do the results of the visual field test mean? A “normal” visual field test means that the patient can see about as well as anyone else does in the center and around the edges of the visual field. A test that shows visual field loss means that vision in some areas is not as sensitive as normal.

What happens if you fail a visual field test?

For example, it can range from a nearly complete loss of peripheral vision to a small area of partial loss. People with visual field loss may have trouble seeing objects out of the corner(s) of their eyes, lose their place while reading, startle when people or objects move toward them, or bump into people and objects.

What is a Humphrey field analyser?

Humphrey visual field analyser. Humphrey field analyser ( HFA) is a tool for measuring the human visual field that is commonly used by optometrists, orthoptists and ophthalmologists, particularly for detecting monocular visual field. The results of the analyser identify the type of vision defect.

What is the Humphrey visual field test?

In the Humphrey visual field test (which is the most common), the patient’s head is usually secured by them resting their forehead and chin on the appropriate rests inside a large bowl like instrument. (image can be found at the end of this post).

How can central 10-2 VF testing improve the diagnosis of glaucoma?

By using central 10-2 VF testing more routinely, clinicians can hopefully diagnose glaucoma earlier, detect progression sooner and minimize the risk of under- or overestimating the extent of the glaucomatous visual field damage—in all stages of glaucoma.

What is the glaucoma hemifield test?

The glaucoma hemifield test (GHT) provides assessment of the visual field where glaucomatous damage is often seen. It compares five corresponding and mirrored areas in the superior and inferior visual fields.