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Aeromedical factorsQuestion 897 of 934

Why is the blind spot normally not a problem when both eyes are used?

  1. The brain can always fill the gap in the picture
  2. The blind spot of each eye is located at the edge of the vision field
  3. An object cannot be in the blind spot of both eyes at the same time
  4. The cones fill the gap when light is bright
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Correct answer: An object cannot be in the blind spot of both eyes at the same time

The blind spot is where the optic nerve connects to the retina. A windshield divider can hide an object in one eye's view.

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 17: Aeromedical Factors — Vision, page 443

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Questions last reviewed: 18 October 2026