Forget the dress, there are new optical illusions dividing the web – but what colors and shapes do YOU see?
- Tricky optical illusions, by Gala Spins, show how images can deceive the eye
- Behavioral Optometrist, Bhavin Shah, Reveals Science Behind Optical Illusions
- Brits are divided over this new batch of head scratch images
Optical illusions are hotly debated – who can forget the infamous white-gold/blue-black dress in 2015, which even led to Kim Kardashian and Taylor Swift joining the debate?
But now there’s a new batch of images, created by Gala Spins, that are leaving the nation stunned, showing how colors and shapes can deceive the eyes.
These were put to the test, with Britons being questioned about what they could see depending on their unique vision, showing that our perceptions can be very different from each other.
Bhavin Shah, a behavioral optometrist at Central Vision Opticians, explained how and why we see different images and colors.
1. What shape do you see?
More than 71% see a yellow butterfly in this image, while 29% see two faces looking at each other
More than seven in ten (71%) see a yellow butterfly in this image, while 29% see two faces looking at each other.
About the findings, Bhavin says: ‘Many people will see the butterfly first before focusing on the details of the faces.
People have a tendency towards human faces and are always attracted to them. There are parts of the brain that respond specifically to faces, so once we see it in the illusion, we’ll see it more often.”
2. What color is the handbag?
Nearly two-thirds (63%) of people see a green handbag, while 37% of participants see it as blue
Nearly two-thirds (63%) of people see a green handbag, while 37% of the participants see it as blue.
Bhavin notes, “In this case, there is not enough information or context available about the object, so the brain has to apply its own processing and create a reality that it believes is correct.”
Some people will process the color as if it were indoor lighting and others as if it were outside, which is why people see different colors.”
Bhavin adds, “Most optical illusions work because our eyes take in optical information from the light and our brains have evolved to create a reality based on that information.
However, there are many possible sources of error that can cause the brain to interpret something differently.
“The brain has many ways to fill in missing information based on experience, learned visual responses, and understanding of the world and context.
Optical illusions arise when there isn’t enough information or context about the object, so our brain has to fill in the gaps, meaning different people see different things.”
3. Which places move the most?
Looking at these images, different colored spots seem to move more than others, and for some, the spots don’t move at all
Looking at these images, different colored spots seem to move more than others, and for some, the spots don’t move at all.
Nearly three quarters of the people (71%) who showed these images said that the orange spots on a purple background move in front of them. Meanwhile, more than half (57%) said the blue spots appeared to move on a green background.
On the other hand, only three in ten (29%) of people said that the purple spots on a blue background appeared to be moving.
Bhavin says: ‘The rotational movement is caused by signal processing of the complex image, especially in parts of the retina that lie just outside the central part of the view, as well as by very small movements of the eyes.
“The brain assumes that the eyes are stable and non-moving, so it has to assume that the pattern has to move instead, so the pattern starts moving.
“Some people have more of these small eye movements than others and some are more sensitive to contrast in the pattern, so there will be some variation in the appearance of movement.”
WHY DO WE SEE COLORS DIFFERENTLY?
Every person is unique and as a result our brain processes information in a different way. Depending on how you interpret colors, one person may see it one way, while the next person looking at it may see it differently.
Light enters the eye and hits the retina, the light-sensitive tissue at the back of the eye.
The light is converted into an electrical signal that travels along the optic nerve to the visual cortex in the brain. The brain makes its own unique interpretation of this electrical signal.
Unsurprisingly, many respondents changed their minds when they saw the color as opposed to the two shades of blue, as we perceive an object’s color based on a comparison with the surrounding shades, not the actual color itself.
Assessing color vision is just one of many tests that can be performed during a routine vision test. It is possible for color blindness to go undetected, depending on its severity – because it is impossible to see the world through another person’s eyes.
Conditions such as protanomaly, deuteranomaly and tritanomaly can range from inconvenient to quite dangerous – often preventing those affected from pursuing a career. If you are concerned about your color perception, you should make an appointment with a registered optometrist.
Stephen Hannan, Director of Clinical Services at Optical Express