Using only the gold standard of care, at our office the Humphrey Visual Field perimeter is used to detect dysfunction in central and peripheral vision which may be caused by various medical conditions such as glaucoma, stroke, brain tumours or other neurological deficits.
The test is used to measure your responses to the presence of objects in different areas of your field of view. While your head is held still, usually with a chin rest inside a large bowl-like instrument, you stare at a source of light straight ahead. Random lights of different intensities are flashed in your peripheral field of vision. You then press a button to indicate your response when you perceive the computer-generated light suddenly appearing in your field of view. If you can’t see objects in an appropriate portion of your field of view, then you may have a blind spot indicating vision loss. Humphrey visual field testing is available at our Hamilton office and Frequency Doubling Technology Testing is available at both our Hamilton and Burlington office.