The Association is a non-profit social enterprise dedicated to helping Canadians with Visual Stress. We are creating a Canada-wide network of healthcare, education and industry participants to improve the identification, diagnosis, interventions, and clinical practice guidelines used to support individuals with Visual Stress.  


The work of the Association will operate within 5 Impact Streams: community, advocacy, research, education and support.


We are just at the beginning of this sizeable initiative and we are looking for input and feedback during this planning and development phase.  Please join us today as a fellow champion and we are sure to achieve success.  


Visual Stress is a neurological condition that effects visual sensory processing.  It is characterized by a group of symptoms such as headaches, light and pattern sensitivity, and visual and perceptual disturbances. These can lead to vestibular, reading and attention difficulties, and difficulty managing print, screens and unnatural lighting sources.

Visual Stress is attributed to a cortical hyperexcitability and occurs in approximately 15-20% of the general population. It is neurological, not optical but the symptoms can appear to be optical in nature.

Visual Stress is more common in neurological and neuro-developmental diagnoses where cortical hyperexcitability is present such as:
•    Attention Deficit Disorder- ADHD
•    Anxiety
•    Autism
•    Dyslexia
•    Epilepsy (photosensitivity)
•    Hallucinations
•    Havana Syndrome
•    Mal de debarquement
•    Migraine
•    Multiple Sclerosis
•    Myalgic Encephalomyelitis (Chronic Fatigue)
•    Persistent Postural Perceptual Dizziness (PPPD)
•    Post-ABI/Concussion Syndrome (PCS)
•    Post-Traumatic Stress Disorder (PTSD)
•    Specific Learning Difficulties
•    Stroke
•    Tourette Syndrome 
•    Vestibular disorders / motion sickness
•    Visual Snow



Precision spectral filters such as overlays or tinted lenses are used to treat Visual Stress; they increase comfort, reduce perceptual instability and increase reading speed.

A functional MRI study of migraine patients undertaken at Michigan State University in 2012 reported that the cortical hyperexcitability is normalized with the use of precision tinted lenses (identified using the Intuitive Colorimeter) and suggests the therapeutic use of these lenses for visual cortical hyperactivation.