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Colour AfterImages

  • Select the Show test image button.
  • Take a good look at the test image of white with a black cross in the middle, fixating on the central cross.
  • Check that it looks white
  • Then press Show colour image and stare at the coloured image, again fixating on the central black cross for at least one minute (eg count to 60 slowly).
  • Then press Show test image, and look back at the test image.
  • Read explanation.