| 1. | Dronfield defended the entoptic explanation by way of ethnographic comparison.
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| 2. | These images are, therefore, entoptic phenomena.
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| 3. | Called entoptic perimetry, it borrows electronic display imaging technology first developed for military applications.
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| 4. | The implication of this is that entoptic phenomena will be understood differently in different cultures.
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| 5. | The entoptic phenomenon is a normal phenomenon that some people may become suddenly aware of.
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| 6. | During the second phase of trance people try to make sense of the entoptic phenomena.
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| 7. | This is known as the blue field entoptic phenomenon ( or Scheerer's phenomenon ).
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| 8. | Yet, there is enough commonality between the main entoptic phenomena that their physical origin is now well-understood.
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| 9. | In 1988, David Lewis-Williams and T . A . Dowson published an article about phosphenes and other entoptic phenomena.
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| 10. | He conducted research of entoptic phenomenon, Purkinje images, the etiology of myopia, and Listing's law of ocular movement.
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