Blair Witch was filmed with a handheld camcorder, which was subjected to considerably more motion than the average movie camera, and lacks the stabilization mechanisms of steadicams.Home movies, often filmed with a cell phone camera, also tend to cause motion sickness in those who view them. The person holding the cell phone or other camera usually is unaware of this as the recording is being made since the sense of motion seems to match the motion seen through the cameras viewfinder. Those who view the film afterward only see the movement, which may be considerable, without any sense of motion. Using the zoom function seems to contribute to motion sickness as well since zooming is not a normal function of the eye. The use of a tripod or a camera or cell phone with image stabilization while filming can reduce this effect. Virtual reality
Motion sickness due to virtual reality is very similar to simulation sickness and motion sickness due to films. In virtual reality the effect is made more acute as all external reference points are blocked from vision, the simulated images are three-dimensional and in some cases stereo sound that may also give a sense of motion. The NADS-1, a simulator located at the National Advanced Driving Simulator, is capable of accurately stimulating the vestibular system with a 360-degree horizontal field of view and 13 degrees of freedom motion base.
Overhydrated hereditary stomatocytosis
Dehydrated hereditary stomatocytosis (hereditary xerocytosis; hereditary hyperphosphatidylcholine haemolytic anaemia)
Dehydrated hereditary stomatocytosis with perinatal edema and/or pseudohyperkalemia
Cryohydrocytosis
Blackburn variant
Familial pseudohyperkalaemia (not associated with hemolytic anemia)There are other families that do not fall neatly into any of these classifications.Stomatocytosis is also found as a hereditary disease in Alaskan malamute and miniature schnauzer dogs. Treatment
At present there is no specific treatment. Many patients with haemolytic anaemia take folic acid (vitamin B9) since the greater turnover of cells consumes this vitamin. During crises transfusion may be required. Clotting problems can occur for which anticoagulation may be needed. Unlike hereditary spherocytosis, splenectomy is contraindicated. References
Further reading


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