More simply put, in order to see in 3-D both eyes must be working together simultaneously as a coordinated team. Anyone who is having a less than ideal experience viewing 3-D movies, likely has some sort of functional vision problem. Common symptoms include headaches, dizziness, motion sickness, eyestrain, visual fatigue, or overall avoidance of this heightened form of visual stimulation. If you or someone you know experiences any of these frustrations, contact us so we can screen for this treatable vision dysfunction.