Did you know? VCS and color vision measurements are the earliest measurable effects of chronic exposure to many organic solvents, but the vision deficits and symptoms cannot be reversed by any treatment.

Prior to launching a new version of this website in June, 2002, the earlier version had been online for about a year and a half. Over 3,600 registered users had taken the preliminary and VCS tests. About half of the test results were positive for potential chronic, neurotoxin-induced illness. We do not know exactly how many of those used our treatment protocol with their local physician, or the outcome for all that did. We do know, however, that many used the protocol with success, and that many others were successfully treated by Dr. Shoemaker or another physician.