Weird viral photo of Adele's face exemplifies the phenomenon called the Thatcher effect
The 42-year-old optical illusion is still astounding people.

Prepare to get Thatcherized.
It seems that Adele is going viral once again. Perhaps you’ve seen the image in question previously (it seems to make the rounds every couple of years). But in case you missed it—it’s Adele’s face. Normal, just upside down.
Only it’s not normal. In fact, when you turn Adele’s face right side up, what you notice is that her eyes and mouth were actually right-side up THE ENTIRE TIME, even though the entire head was upside down. So when you turn the head right side up, the eyes and mouth are now UPSIDE-DOWN—and you can’t unsee it. Do you feel like you're Alice in Wonderland yet?
Just wait. Things get even more fascinating. Especially because this optical illusion is over 40 years in the making.
Below you’ll find the Adele photo in question. Go ahead. Take a look at it. Then turn the image upside down.

Can't. Unsee.
Crazy right? And just a little terrifying?
As the Facebook post explains, this mind-boggling image highlights a phenomenon known as the Thatcher effect. Our brains, so much more used to recognizing faces that are right-side up, have difficulty detecting specific changes once a face is upside down.
Seeing that everything is more or less where it should be, our brains don’t notice anything out of the ordinary in Adele’s face until we turn her face back to a normal position.
The Thatcher effect got its name from British Prime Minister Margaret Thatcher, on whose photograph it was first demonstrated back in 1980 by Peter Thompson, Professor of Psychology at York University.
This demonstration was one of the first to explore just how facial recognition works, and certainly the first to suggest that humans (and monkeys, it turns out) process faces on a more holistic level, rather than by individual components like lips and eyes. Since its publication, there has been a wealth of research exploring how our brain takes in both subtle and striking facial configurations.
Funny enough, it was once believed that this illusion only worked on the Prime Minister’s face. But as Adele has proven, anyone can be Thatcherized.
This article originally appeared two years ago.
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An Irish woman went to the doctor for a routine eye exam. She left with bright neon green eyes.
It's not easy seeing green.
Did she get superpowers?
Going to the eye doctor can be a hassle and a pain. It's not just the routine issues and inconveniences that come along when making a doctor appointment, but sometimes the various devices being used to check your eyes' health feel invasive and uncomfortable. But at least at the end of the appointment, most of us don't look like we're turning into The Incredible Hulk. That wasn't the case for one Irish woman.
Photographer Margerita B. Wargola was just going in for a routine eye exam at the hospital but ended up leaving with her eyes a shocking, bright neon green.
At the doctor's office, the nurse practitioner was prepping Wargola for a test with a machine that Wargola had experienced before. Before the test started, Wargola presumed the nurse had dropped some saline into her eyes, as they were feeling dry. After she blinked, everything went yellow.
Wargola and the nurse initially panicked. Neither knew what was going on as Wargola suddenly had yellow vision and radioactive-looking green eyes. After the initial shock, both realized the issue: the nurse forgot to ask Wargola to remove her contact lenses before putting contrast drops in her eyes for the exam. Wargola and the nurse quickly removed the lenses from her eyes and washed them thoroughly with saline. Fortunately, Wargola's eyes were unharmed. Unfortunately, her contacts were permanently stained and she didn't bring a spare pair.
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Since she has poor vision, Wargola was forced to drive herself home after the eye exam wearing the neon-green contact lenses that make her look like a member of the Green Lantern Corps. She couldn't help but laugh at her predicament and recorded a video explaining it all on social media. Since then, her video has sparked a couple Reddit threads and collected a bunch of comments on Instagram:
“But the REAL question is: do you now have X-Ray vision?”
“You can just say you're a superhero.”
“I would make a few stops on the way home just to freak some people out!”
“I would have lived it up! Grab a coffee, do grocery shopping, walk around a shopping center.”
“This one would pair well with that girl who ate something with turmeric with her invisalign on and walked around Paris smiling at people with seemingly BRIGHT YELLOW TEETH.”
“I would save those for fancy special occasions! WOW!”
“Every time I'd stop I'd turn slowly and stare at the person in the car next to me.”
“Keep them. Tell people what to do. They’ll do your bidding.”
In a follow-up Instagram video, Wargola showed her followers that she was safe at home with normal eyes, showing that the damaged contact lenses were so stained that they turned the saline solution in her contacts case into a bright Gatorade yellow. She wasn't mad at the nurse and, in fact, plans on keeping the lenses to wear on St. Patrick's Day or some other special occasion.
While no harm was done and a good laugh was had, it's still best for doctors, nurses, and patients alike to double-check and ask or tell if contact lenses are being worn before each eye test. If not, there might be more than ultra-green eyes to worry about.