Above: Normal patient with age appropriate responses to the test
To the right: An example of a retinal detachment that shows partial macular involvement in the right eye
Visual Field Testing
The visual field instrument is used to test a person's central and peripheral vision using lights of various intensities and shapes to determine an individual's functional vision. The results of this test inform the doctor how your vision is working compared to a national database of other people who are your age. This test is commonly used for various reasons. Some of the more common reasons include conditions like glaucoma, age-related macular degeneration, and retinitis pigmentosa.
The test length varies depending on what program the doctor has ordered; however, it generally takes a few minutes per eye.