All information provided is for educational purposes only and represents the experiences and information encountered to date by the author(s) and is accurate to the best of our knowledge. No guarantees for a cure for any disease are implicitly or explicitly given to anyone. No single vision test can fully describe function of the visual system or conclusively indicate the presence or absence of biotoxins. No single test, including a test of visual contrast, by itself can provide confirmation of presence of absence of illness due to exposure to biotoxins. Diagnoses cannot be made and medications cannot be prescribed without seeing a physician in person. Always seek the advice of your physician before making any treatment decisions.