2/18/2023 0 Comments Humphrey visual fieldAfter requesting quantified visual field tests, the patient returns with a black and white printout with numbers (eg, Humphrey fields) or coloured lines on a sheet (eg, Goldmann fields). Last reviewed on January 1, 2022.How to interpret visual fields in Practical Neurology?Īfter a bedside visual field examination with waggling fingers and even a red hatpin, you decide that there is an abnormality. It is important to get a visual field test as often as is recommended by your eye doctor, in order to monitor progress and preserve vision.Īrticle by My Le Shaw, MD and John S. If your visual field is worsening, it could mean that your pressures are too high and further treatment is necessary to lower your eye pressure. Your doctor can tailor the type of test to best monitor your disease and adjust treatment appropriately. This test is done with a moving target controlled by a trained technician. If your glaucoma remains uncontrolled, these areas will get darker and larger.Īnother type of visual field test is the Goldmann visual field. If you move your eyes to follow or look for the blinking lights, it decreases the reliability of the test and the ability of your doctor to monitor your disease.Īreas that appear gray or black on the test results reflect areas in your vision that are blurred or missing. It is important when taking this test that you concentrate on the fixation light in the center and press the button when the blinking test light is seen with your side vision. The one most commonly used in the United States is the Humphrey visual field, which consists of a center fixation light and blinking test lights in your side vision. There are different types of visual field tests. Your doctor will take these possible effects on your exam when interpreting the results. Other diseases, such as cataract, stroke, macular degeneration and diabetes, can also influence the visual field. The visual field shows changes that are not noticed by the patient until the damage is severe. Glaucoma is often called “The Sneak Thief of Sight” because it usually is a painless process that mostly affects the peripheral, or side vision, first. It measures the area of vision, or how wide of an area your eye can see. Usually, the visual field test is taken once a year but depending on the severity of your glaucoma, your doctor may decide to check your visual field more frequently.Ī visual field test maps out what your world looks like to you. This test helps your doctor detect and monitor glaucoma.
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