Katy Perry fans have been left shocked after the singer appeared to struggle with her right eyelid during a recent concert as part of her residency in Las Vegas.
The 'Roar' singer tried to correct the problem, but fans were left questioning what had happened following the incident, which has since sparked some bizarre conspiracy theories among social media users.
You can watch the moment below:
In the viral TikTok clip, Perry, 38, could be seen standing on stage facing fans, when one of her eyelids appeared to struggle to stay open.
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Perry can be seen touching her temple, just next to her eye, a number of times to try and resolve the issue.
Since the clip was shared, some fans have come up with some bizarre conspiracy theories about Perry, with some commenting that it was a 'side effect of the Covid vaccine'.
On Twitter, one person said: "She got that Pfizer eye."
And another wrote: "Isn’t Katy Perry the one who sings that new hot song called 'Eye of the Pfizer'?"
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As you might expect, there's no evidence to suggest the Covid vaccine causes any eye issues.
Common side effects of the jab include a sore arm, headache and tiredness, meanwhile studies have shown that side effects relating to the eyes were rare.
Some fans had less outlandish theories and wondered if the eye issue was caused by a problem with Perry's make-up, with one writing: "Her lash glue wasn’t all the way dry."
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A second said: "That be the glue on the eye lashes my eyes always do that don’t let me sneeze."
While a third, who said she'd spoken to a friend who was a professional make-up artist, said: "Katy has false lashes on in this. It's likely there's something in her eye, or bothering her eye, but she can't rub them because it will ruin her make up.
"Stage make up is very heavy and will get everywhere when you touch it. She's gentling pulling her temple area to try and alleviate the itch or clear whatever is bothering her eye without doing damage."
While we don't know for sure what happened, Perry has previously spoken out about having a 'wonk eye'.
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During last year's American Idol, Perry reassured 16-year-old Caleb Kennedy after he said he was self-conscious about his lazy eye.
“I have a wonk eye as well, and I used to be worried about it,” she said.
“Then a bunch of my fans created a fandom over my wonk-eye. I even have a fandom that calls itself, ‘Katy’s wonk-eye.’
"It's my right eye. So just celebrate all that stuff. Don't worry about it."
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Speaking in 2011, Perry explained: "I got a prescription for my wonk eye to make [it] go bigger whenever I take pictures because I have a slight wonk."
LADbible has reached out to Perry's rep for comment.
Featured Image Credit: TikTok/@katyperrytvTopics: Celebrity, Katy Perry