What is a Visual Field Analysis?
A visual field test evaluates a person’s scope of vision. Even when your eyes are focused only on a central point, you still perceive objects on your peripheral vision. The total area in which you can see all these objects is called visual field.
In a visual field analysis, each eye is studied independently. The test requires full cooperation from the patient, who needs to complete a test so that useful information can be gathered.
What is a Visual Field Analysis for?
A visual field analysis is used to determine the presence of glaucoma. Glaucoma occurs when there is increased pressure in the eye. When left untreated, this can lead to permanent loss of vision. Apart from that, a visual field test also helps in detecting signs of other eye problems such as peripheral retinal disease and optic nerve disease.
Even diseases that damage visual pathways within the brain can be detected. Visual pathways transmit information from the eye to the brain where it is interpreted as the images that we see. The exam can also show you whether you are experiencing loss of vision from any point in your visual field. By tracing the pattern of the vision loss, the eye doctor shall be able to diagnose its cause.
How should you prepare for a Visual Field Analysis?
There’s no preparation necessary for a visual field analysis although during the test, you will have to pay full attention and listen to the doctor’s instructions carefully.
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