Spectacle Tints and Thin-Films for Migraine

Inclusion Criteria: * Subjects must meet the International Headache Society criteria for chronic migraine (International Classification of Headache Disorders, 3rd edition (Headache Classification Committee of the International Headache Society, 2013). All subjects must be between the ages of 18 and 60 years-old. To be included in the study, in the best judgment of the investigator, subjects must be stable on their current migraine treatment regimen. Stability is defined as no major changes in therapy contemplated within the next 4 months. Exclusion Criteria: * Subjects with other light sensitive conditions, such as iritis and blepharospasm, will be excluded. Subjects with best-corrected visual acuity less than 20/40 will be excluded. Subjects with diseases of the retina, such as diabetic retinopathy and macular degeneration will be excluded. Subjects using medications known to affect the eye will be excluded (e.g. chloroquine, hydroxychloroquine, ethambutol, amiodarone). Due to constraints on the manufacture and mounting of study lenses into study frames, the study must exclude subjects who are very nearsighted (more than 4 diopters), subjects who are very farsighted (more than 2 diopters), and subjects who have more than 2.5 diopters of astigmatism. Because of the cyclical effects of botulinum toxin injections and other nerve blocks, patients undergoing these treatments will be excluded. Subjects must not have had any injections or blocks within 4 months of enrollment a…