Dr. Raymond Roy Articles Dr. Raymond Roy Articles A Standard Technique for the Prolonged Occlusion Test (PDF) Case History for the Headache Patient (PDF) Headaches and Binocular Stress (PDF) Ocular Migraine – A Case Report (PDF) Ocular Migraine and Latent Heterophoria (PDF) Ocular Migraine and Prolonged Occlusion (PDF) Prism and Binocular Stress (PDF) Symptomatology of Binocular Stress (PDF) Role of Binocular Stress in the Post-Whiplash Syndrome (PDF) The Value of Accurate Vertical Phoria Determinations (PDF) Vision Anomalies from Severe Cervical Strain (PDF)