Science-driven. Intuition-informed. Root-cause care.

Do not attempt this test if you have significant eye disease, recent eye surgery, or trouble seeing the screen clearly.

Please complete the Visual Contrast Sensitivity screening through:

https://www.vcstest.com/ (opens in a new tab)

When completing the test, please choose the $15 contribution/report option, not just the free/raw-results version.

The free version may give you raw data, but the raw numbers are not very useful clinically without the graph/report format. The paid report provides the visual graph that allows us to compare the right and left eye results more clearly and interpret the pattern during your visit.

Please skip the symptom questionnaire questions. Those questions are not the part of the test we need, and they are not useful by themselves for interpretation.  When the test results, please download the visual contrast sensitivity graph/report were it shows the left and right eye results compared to healthy peers.

Please complete the test before your appointment and upload it to the patient portal.

Important notes

This is a screening tool, not a diagnosis.

Abnormal results do not automatically mean mold illness, CIRS, Lyme disease, mast-cell activation, or any one specific condition.

Results can be affected by vision problems, glasses/contacts, lighting, screen quality, eye strain, and other health factors.

Please take the test in a well-lit room using a computer or tablet screen, not a small phone screen if possible.

Wear your usual glasses or contacts for distance/near vision as appropriate.

The purpose of this test is to give us one additional piece of information to discuss in the context of your symptoms, history, exam, environmental exposures, and lab findings.