Visual Contrast Sensitivity (VCS)

Visual Contrast Sensitivity (VCS)

Visual contrast sensitivity (VCS) testing measures your ability to see details at low contrast levels, and is often used as a nonspecific test of neurological function. At GMA, the VCS testing is often a very useful biotoxin screening tool.

  1. 1
    How does VCS testing work?

    VCS testing involves the presentation of a series of images of decreasing contrast to the patient, and the recording of the contrast levels where patterns, shapes, or objects can or cannot be identified.

    The ability to detect contrast is part of the brain’s function. Contrast is your ability to discern black from white, and also between different shades of gray. Toxins affect nerves, and we can measure is the optic nerve by checking its ability to see finer and finer degrees of contrast. Toxins reduce blood flow to the nerves, effectively decreasing oxygen. In later stages; it can cause blurred vision and other functional problems. While the VCS test is not diagnostic, it does give us an idea of what might be important in your treatment, and also gives us a point of reference for future improvement.

  2. 2
    What does a VCS test involve?

    A VCS test is a simple eye exam to test the sensitivity of your eyes to contrast. A small board with circular areas of slanted lines in varying levels of contrast is held at a specified distance from your eyes. You cover first one eye and test, then the other. Similar to a regular eye chart, you read across the columns and down the rows, stating the direction you see the fine lines slanting, until you no longer can see the contrast. The Technician will record your findings and present your practitioner with your result.

  3. 3
    How can VCS help me?

    While the VCS test is not diagnostic of a specific problem, it does give us an idea of what might be important in your treatment, and also gives us a point of reference for future improvement.

  4. 4
    Do I need a prescription for a VCS test?

    No, no prescription is needed to do a VCS test, and it is available for self-referral. You will receive a VCS with your initial visit to Gordon Medical. It is advised that if you are scheduling a VCS test outside of your initial consult that you schedule a 30 minute follow up appointment with your practitioner to discuss the result.

  5. 5
    How often will I need a VCS test?

    The frequency of a VCS test will depend on how your treatments are going. Your practitioner may have you do multiple VCS tests to track your progress on certain treatment protocols.

  6. 6
    How much time does a VCS test take?

    VCS testing appointments are scheduled for 30 minutes.

  7. 7
    How do I schedule an appointment?

    Please call Gordon Medical Associates at (707) 575-5180 to schedule a VCS test. Appointments can be made Monday through Friday with a Technician.