The hypothesis behind the migraine glasses was that migraines could be prevented by blocking specific wavelengths of light. Operating under this assumption, the glasses would prevent the wearer from needing other medications or therapies to alleviate migraine symptoms.
Following the results of an initial trial to validate the hypothesis, the study sponsor determined that more patients were needed. The second trial, which RDI conducted, included 60 patients. To showcase effectiveness, the trial included randomization, with glasses that blocked specific light wavelengths and tinted placebo glasses that did not.