Our visual perception can be misled through optical illusions, as demonstrated by several examples provided in the document. The document shows optical illusions involving images of people, squares of different shades, dots to count, curved versus straight lines, a spiral, and street paintings, in order to illustrate how our eyes and brain can be tricked despite sets of established rules for visual perception.

1. VISUAL PERCEPTION

2. As every process it has its rules. So if you know them, you will
find it very easy to mislead both your eyes and your brain.
That is what we call OPTICAL ILLUSION
Let’s have a look at some examples

3. Can you see the two
Mexican people?
And the gold cup?
Which square is darker?

4. Try to count the black dots

5. Are the lines straight or are they curved?

6. It’s a spiral, right?

7. What can you see in this picture?

8. Street painting

10. Now look at these lorries