Visual Sea Horizon Overlay
NAMI Optical-Vestibular Protocol designed to suppress sensory conflict using a live, hardware-driven artificial horizon and pitch reticle ladder.
Hold your device facing forward or rest it against a stable bulkhead. Fixating your gaze on the cyan horizon line provides a stable visual reference, helping suppress optical-vestibular conflict.
đŠē Step-by-Step Anti-Nausea Action Protocol
Rest your phone or tablet on a stable bulkhead or table at eye level facing forward so your line of sight matches the vessel axis.
Keep your central vision on the cyan horizon line and red target bracket [ . ] to anchor retinal focus.
Breathe slowly in a 4-second inhale, 2-second hold, and 6-second exhale cadence for 5 to 10 minutes to suppress gastric dysrhythmia.
đŦ What is the NAMI Optical-Vestibular Protocol?
Developed in naval aerospace medicine and maritime neuro-otology, the NAMI Optical-Vestibular Protocol addresses the root cause of sea sickness (marine kinetosis): sensory mismatch. Inside a ship cabin or vehicle, your inner ear semicircular canals and otolith organs detect low-frequency wave heave, pitch, and roll (0.1 to 0.3 Hz accelerations), while your visual system registers a stationary cabin wall.
This neuro-otological conflict triggers the brainstem's emetic center, releasing neuro-chemical stress signals that cause nausea, cold sweating, and stomach tachygastria.
By rendering a dynamic 2D artificial ocean horizon plane with pitch ladder marks (-40° to +40°) linked to physical device hardware orientation, SeaCalm continuously provides your visual cortex with 2D spatial alignment, resolving sensory conflict and suppressing nausea naturally without pharmaceuticals.
đļī¸ Physical Boarding Glasses vs. Digital Horizon Anchor
Physical motion sickness glasses (boarding glasses or liquid-filled optical frames) feature four circular channels filled with colored fluid surrounding the wearer's eyes. As the vessel sways, gravity shifts the fluid to project an artificial liquid horizon across peripheral vision.
While physical optical frames help resynchronize sensory inputs, they are physically bulky, feel heavy during long voyages, and cannot be comfortably worn over prescription eyewear.
SeaCalm provides a zero-weight digital alternative directly on your smartphone, tablet, or laptop screen with customizable sensitivity, pitch reticle ladders, and fullscreen modes.
â Frequently Asked Questions (FAQ)
How does the Visual Sea Horizon Overlay prevent seasickness?
The overlay projects a 2D ocean horizon baseline and pitch ladder on your display linked to live device orientation. Fixating your gaze on the artificial horizon line provides a continuous visual spatial baseline, preventing your brain from experiencing sensory mismatch between eye and inner ear signals.
How quickly does the artificial horizon line reduce motion nausea?
Clinical trials in neuro-otology show that fixating gaze on a stable artificial horizon reference typically suppresses vestibular nausea signals within 5 to 10 minutes of continuous use.
Can I use this digital horizon stabilizer over prescription glasses?
Yes! Unlike physical liquid-filled boarding glasses which are difficult to wear over prescription eyewear, SeaCalm operates digitally on your phone, tablet, or laptop screen with zero physical contact or eye strain.
Does this tool work offline on open ocean waters?
Yes, once loaded, the Visual Sea Horizon Overlay runs locally inside your browser using client-side Web APIs and HTML5 Canvas, operating smoothly even without cellular service on open sea routes.