An optical illusion is a visual phenomenon where our perception of an image differs from objective reality. This image is ...
This is an image to demonstrate visual 'crowding' and test peripheral vision. Ensure that the red dot in the centre of the image is at eye level and focus on it. While holding your focus on the red ...
This is an image to demonstrate visual 'crowding' and test peripheral vision. Ensure that the red dot in the centre of the image is at eye level and focus on it. While holding your focus on the red ...
A visual challenge, the 'Spot the 409' test, requires participants to find a single '409' amidst numerous '406's within seven ...
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