Neurolens Headache Study

Inclusion Criteria: * Male or female, and between 18-60 years of age at the time of signing the informed consent. * Best Corrected distance and near acuity are equal to or better than 20/25 Snellen Equivalent in each eye. * Best Corrected distance and near binocular acuity are equal to or better than 20/25 Snellen Equivalent. * Symptomatic as indicated by the HIT-6 questionnaire (Score equal to or greater than 56) * Updated distance spectacle prescription must match the following a. Spherical power inclusive between +4.00D to -8.00D b. Cylinder power no more than -4.00Dcyl c. ADD power i. Subgroup 1: No ADD ii. Subgroup 2: minimum +1.00D ADD * Subjects' eye alignment tests must match the following: a. Successful measurement on the neurolens Measurement Device (Acceptable MQI and a numerical neurolens Value, no Low MQI or Convergence Excess) * Minimum stereo vision of 50 seconds of arc at 16 inches * Capable of committing to the duration of the study. * Willing to comply with study procedures Exclusion Criteria: * Subjects who need a vertical prism. * Previously has worn neurolenses. * Subjects who need a near add less than 1.00D * Use of contact lenses during the study * Lack of binocular vision, including strabismus, amblyopia, or suppression. * Greater than 20 prism diopter of eye misalignment. * Aniseikonia greater than 3.00D spherical equivalent difference between eyes * Prior ocular surgery that in the estimation of the practitioner induces corneal scarring (RK,…