Visual Field Tests, Explained

Visual field tests are a cornerstone in the diagnostic process for many eye conditions, functioning as a critical tool in the eye doctor’s arsenal to assess and monitor the health of your eyes’ peripheral vision. Read on as Northern Virginia Doctors of Optometry explains the basics of this integral part of the eye exam procedure.

Importance of Visual Field Testing

Visual field testing plays a pivotal role not only in diagnosing eye diseases like glaucoma and retinal disorders but also in determining the extent of vision loss and monitoring the progress of these conditions. This test allows clinicians to map out any vision impairments, including blind spots or scotomas, and understand their potential impact on daily activities.

Types of Visual Field Tests

There are several types of visual field tests utilized by eye care professionals to assess the visual field.

• Confrontation Visual Field Test. It is a primary, basic screening tool where you focus on a target, and the examiner moves objects in and out of your visual field. This test is often the first step in identifying if a more detailed examination is required.
• Automated Static Perimetry Test. This more precise test involves staring at a central point inside a dome-like instrument (perimeter) and clicking a button whenever you see flashes of light. It’s instrumental in creating a detailed map of your visual field, specifically advantageous for patients with glaucoma, allowing for the early detection of peripheral vision loss.
• Kinetic Visual Field Test. Using moving targets rather than static flashes, this test can help to map the peripheral visual field, particularly useful for detecting certain types of vision loss that may not be identified by static methods.
• Frequency Doubling Perimetry. This method leverages an optical illusion to identify vision loss areas within the visual field, providing another layer of diagnostic insight.
• Electroretinography (ERG). Though not a visual field test per se, ERG is a complementary procedure that measures the electrical responses of cells in the retina.
• Amsler Grid. A simple yet effective tool for detecting vision problems in the central visual field, it is often used by patients at home to monitor conditions such as age-related macular degeneration.

When Do You Need a Visual Field Test?

It’s imperative that you take regular visual field testing as part of your comprehensive eye care, especially if you are at risk for eye diseases due to conditions like diabetes, high blood pressure, or have a history of eye conditions such as glaucoma or macular degeneration. Visual field testing can also be crucial for those noticing changes in their vision, including increased difficulty with peripheral vision or issues with driving.

At Northern Virginia Doctors of Optometry, we understand the importance of visual field testing in the early detection and management of eye diseases. We strive to use the latest technologies and diagnostic tools to provide comprehensive eye care services. Call us at any these numbers: Alexandria, VA: (703) 660-9494, Arlington, VA (Crystal City): (703) 413-1400, Arlington, VA (Clarendon): (703) 522-7676, Falls Church, VA: (703) 573-1200, or Reston, VA: (703) 467-9080. You can also fill out our contact form to schedule an appointment.