Visual field testing is an important part of most standard comprehensive eye exams. Also sometimes known as perimetry testing, Visual field testing is a method to measure the entire scope of vision of an individual, including their peripheral/side vision.
Visual field testing is one of the most effective diagnostic treatments in the detection of glaucoma. This is because when patients are affected by glaucoma, it is usually the peripheral vision that is affected by their condition first. However, it can also be used to detect central or peripheral retinal diseases, eyelid conditions such as drooping, optic nerve damage and conditions that affect the visual pathways from the optic nerve to the area of the brain where this information is processed into vision.
Visual field testing is also an important part of monitoring for people who are considered to be at risk for vision loss from disease and other problems, including those who have been diagnosed with the following:
Pituitary gland disorders
Central nervous system problems (such as a tumor that may be pressing on the brain)
High blood pressure
Visual field testing is non-invasive, painless and doesn’t require patients to have their eyes dilated. You will be positioned in a dome-like machine, looking through one eye at a time while a series of small lights flash in your side vision. Every time you see a light, you will press a button on a hand-held remote-like device. Some of the lights will be bright, some will be dim, and you are not meant to see all of them. You will be guided through the test by a technician who will monitor to ensure the test results are as accurate as possible.
Depending on the outcome of your results, you may be recommended for further diagnostic testing. If you have been diagnosed with glaucoma, you will probably be recommended to have several visual field tests each year, which will help your eye doctor to monitor the progression of your condition and recommend treatments to slow it.”
If you would like more information about visual field testing, or if you have concerns about your peripheral vision, please don’t hesitate to schedule an appointment with our experienced and knowledgeable eyecare team today.