If you go blind in one eye, you'll only lose about one-fifth of your vision (but all your depth perception).

如果你一只眼失明，你只会失去约五分之一的视力(但会失去全部的深度知觉)。

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So how can just one eye provide depth perception?

所以为什么一只眼睛就可以提供深度感呢？

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Depth- Draw the viewers eye in and back through an image.

景深- 通过图像抓住别人的眼睛.

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When each eye sees very similar, but different versions of an image, the brain thinks it is seeing depth, or three dimensions.

VOA: special.2010.01.26

A signal from the TV tells each side of the glasses when to turn on and off, showing each eye slightly different images that create the sense of depth.

VOA: special.2010.01.26

Techradar runs this story on its application for a patent for eye tracking to create 3D depth, an area Samsung is also pursuing through its relationship with the Russian Academy of Science.

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We've already spent some time interacting with the company's new depth-camera and eye-tracking technology, but now we wanted to dig deep to understand the thinking behind the system and what technical and practical limitations that need to be addressed before we can get to the computing future of Star Trek.

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The original iteration of Move was an ingenious design: PlayStation Eye locked onto the glowing sphere via calibration and then judged depth owing to the size of the sphere in its 2D field of view.

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