What sets SSS apart
SSS is triggered by the act of seeing motion and eye movement, affecting routine activities many people take for granted.
Symptom Profile
Nausea, headaches, dizziness, and fatigue — often paired with heightened light sensitivity.
Common Triggers
Riding in a car, shopping, reading, using a computer or smartphone, exercising, or watching movies.
Drug-Free Therapy
Dynamic Adaptive Vision Therapy (DAVT) is offered as a public-service approach to treatment.
How DAVT works
Dynamic Adaptive Vision Therapy follows a structured path that mirrors the effort and progress curve of physical therapy.
Diagnose
Rule out labyrinthine or neurologic abnormalities and confirm the visual-motion pattern of SSS.
Train
Follow a personalized DAVT program with clearly defined goals, regular sessions, and family support.
Recover
Build tolerance to visual motion so everyday activities — driving, reading, screens — become comfortable again.
Care paths
Choose the level of support that fits your situation. All paths use the DAVT protocol.
Self-Training
Follow the published DAVT protocol on your own, using the FAQ and patient letters as a guide.
Professional DAVT
Work with a doctor of optometry or physical therapist trained in the DAVT protocol and SSS diagnostics.
Visual motion is a constant companion in modern life, from scrolling through a smart phone to watching movies, riding in a car, or browsing aisle after aisle at a busy store. For most people these scenes are simply part of the day, but for some individuals the experience can spiral into uncomfortable physical sensations. The brain, eyes, and inner ear normally coordinate seamlessly to interpret movement, yet when that partnership is disrupted, ordinary environments can feel overwhelming. This kind of mismatch is at the heart of what is sometimes called the SEE Sick Syndrome, a label that captures how unsettling everyday visual motion can become for those affected.
The hallmark signs tend to involve the body reacting as if it were in motion, even when a person is sitting still. Nausea, headaches, dizziness, and a heavy sense of fatigue are common companions, along with a heightened sensitivity to light that can make bright screens and sunny spaces difficult to tolerate. Symptoms often surface during reading, while watching fast-moving scenes, or when navigating crowded spaces full of shifting visual patterns. Because the triggers are woven into daily routines, people may quietly rearrange their lives to avoid discomfort, choosing shorter trips, dimmer rooms, or skipping activities they once enjoyed.
Recognizing that visual input alone can drive such a wide range of symptoms is an important step toward understanding the condition. The eyes are constantly adjusting, tracking, and refocusing, and each tiny movement sends information to the brain about the surrounding world. When the visual system struggles to process motion smoothly, the resulting signals can clash with what the body feels, producing the unsettled sensations associated with SEE Sick Syndrome. Rather than imagining a dramatic illness, it is better understood as a sensory coordination challenge, one that responds well to targeted, non-invasive approaches.
Treatment focuses on retraining the visual system rather than masking symptoms with medication. Practitioners guided by pioneering clinicians have developed structured therapy programs built around carefully designed eye exercises and adaptive techniques. These exercises gently challenge the eyes and brain to handle motion more efficiently, gradually expanding what a person can comfortably see and do. Sessions are tailored to each patient, beginning with simple activities and progressing as coordination improves. Because the approach is drug-free, it appeals to those who prefer to address the underlying cause of their discomfort rather than rely on short-term relief.
Dynamic Adaptive Vision Therapy is often described as a hands-on, interactive process. Patients are guided through activities that mimic the kinds of motion and visual demands found in real life, from tracking moving objects to shifting focus between near and far points. The adaptive nature of the program means that exercises evolve as the patient gains skill, keeping the work engaging and appropriately challenging. Over time, the visual system learns to interpret motion with less stress, reducing the frequency and intensity of symptoms during everyday tasks like driving, shopping, or enjoying entertainment.
Children and adults alike can benefit from this type of therapy, since the underlying visual skills are fundamental at every age. Students who struggle with reading because words seem to swim or blur may find relief, as can adults who avoid travel or social outings due to motion-related discomfort. Athletes sometimes explore similar techniques to sharpen tracking and reaction. Because the exercises are non-invasive and personalized, families often appreciate having a clear, structured plan that supports progress at a comfortable pace while building confidence in situations that once felt intimidating.
Diagnosis begins with a thoughtful conversation about symptoms and the situations that trigger them, followed by a detailed examination of how the eyes work together. Providers trained in this field look beyond standard vision charts, assessing tracking, focusing, and how the brain processes motion. The goal is to connect the dots between reported sensations and measurable visual behavior, so that a treatment plan can be designed with intention. Patients frequently describe a sense of relief simply in being heard, after years of dismissing their experiences or being told the problem was something else entirely.
Lifestyle adjustments can complement formal therapy, offering small ways to ease symptoms during daily routines. Taking regular breaks from screens, adjusting lighting to reduce glare, and pacing visually demanding tasks can all help lower the overall load on the visual system. Some people find that simple changes, such as seating choices in theaters or vehicles, make a noticeable difference. These strategies are not a cure on their own, but they create a calmer environment in which therapy exercises can take root and progress can build steadily over weeks and months.
Awareness remains a powerful part of the journey, since many people experience these symptoms for years without a clear explanation. Educational resources, patient testimonials, and accessible videos help spread the word that visual motion sensitivity is a real and treatable concern. As more families, educators, and healthcare providers recognize the signs, those affected can seek help sooner and reclaim activities that motion once made off-limits. The continued study of vision therapy points toward a future where everyday environments feel welcoming rather than overwhelming for anyone whose eyes struggle to keep up with the world in motion.
Family-Supported
Family involvement is encouraged — helpers make sessions easier and help maintain consistency.
What patients report
Excerpts from post-therapy letters submitted by SSS patients.
Relief from symptoms
“Relief from nausea, headache, dizziness, and fatigue after completing the DAVT program.”
— SSS patient testimonial
Outdoor life restored
“Improved ability to enjoy light, outdoor activities, and travel that were previously difficult.”
— SSS patient testimonial
Self-trained success
“Success stories from patients who completed the program on their own without professional assistance.”
— Do-it-yourself SSS patient
Frequently asked questions
What triggers SSS symptoms?
Seeing motion or eye movement — for example, while riding in a car, shopping, reading, using a computer or smartphone, exercising, or watching movies. Light sensitivity often accompanies these triggers.
What is DAVT?
Dynamic Adaptive Vision Therapy is a drug-free treatment approach described as a public-service cure for SSS. Progress and effort are similar to physical therapy.
How are sessions structured?
Training follows defined goals with recommended frequency and session length. Family support is encouraged to make sessions easier and more effective.
How is SSS diagnosed?
Diagnosis involves ruling out labyrinthine or neurologic abnormalities and confirming the visual-motion symptom pattern described by Dr. Roderic W. Gillilan.
Ready to take the next step?
Explore SSS in depth or find a provider familiar with the DAVT protocol.
About SSS Find a ProviderAbout Dr. Roderic W. Gillilan, OD
Dr. Gillilan received his Doctor of Optometry degree from Pacific University College of Optometry in 1956. He practiced optometry in the US Army from 1956 to 1958 and in private practice in Eugene, Oregon, from 1958 through 2000. He discovered the SEE Sick Syndrome and successfully treated his first SSS patient in 1965, going on to train several hundred patients through 2000. In 1985, he conducted a motion-sickness research project involving 1,250 high school subjects in Eugene, OR.
His publications include The Gillilan SEE Sick Syndrome article (Oregon Optometry, 1979), The Optometric Management of Motion Sickness (1984), and the peer-reviewed Vision Therapy as A Treatment for Motion Sickness (Journal of the American Optometric Association, 1986).