What does the term Red-out mean?

Question

PPL(A) - Private Pilot License - Human factor and limitations - What does the term Red-out mean?

QuizVDS · Accepted Answer

Red vision during negative g-loads

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Rash during decompression sickness

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Anaemia caused by an injury

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Falsified colour perception during sunrise and sunset

PPL(A) EN: What does the term "Red-out" mean?