Effects of Prismatic Spectacle Lenses on Symptoms of Dizziness, Headache and Anxiety as Caused by Vertical Heterophoria

Inclusion Criteria: * First time appointment for a patient at designated optometry office for treatment of symptoms associated with Vertical Heterophoria * Must have symptoms of dizziness or headache or both: * Dizziness defined as one or more of these: lightheadedness,dizziness, vertigo, feeling off-balance, lack of coordination / "clumsy", unsteadiness while walking or drifting / veering to one side while walking, motion sickness * Headache defined as one or more of these: pain anywhere in the head,posterior neck / upper trapezius (upper back), face, and in and / or around the eyes * Duration of symptoms greater than 4 months * Evaluated for these symptoms previously by at least 1 other doctor (General Practice, Family Practice, Internal Medicine, Neurology, ENT, Emergency Medicine, Pediatrics, PM\&R, Ophthalmology). * Age \>14 * The patient (or their representative) must be able and willing to fill out extra paperwork * All Patients to be seen by same Optometrist for all visits * Must be willing to wear glasses. * The patient (or their representative) must be able to sign informed consent * Must have a driver for Follow Up visits where Control and Treatment Glasses are dispensed, and when Washout period is initiated * Must have a driver for Follow Up visits where Control and Treatment Glasses are dispensed, and when Washout period is initiated * Must have previous negative Neuroimaging (HCT or MRI) that was ordered to assess for headache and / or dizziness Exclusion…