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Do Carrots Improve Your Vision? 15 Misconceptions About Your Eyesight

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We can probably all recount at least a dozen weird and alarming things parents, teachers, and older siblings told us about our eyes when we were kids. For instance, we’d be permanently cross-eyed if we didn’t stop making those faces at our brother or we’d go blind from reading in the dark. But maybe, just maybe, we could find redemption by eating lots of carrots. Here are a few common myths and misconceptions.

MYTH #1: IF YOU CROSS YOUR EYES, THEY'LL STAY THAT WAY.

It’s a myth that your eyes will “freeze” if you cross them for too long. Crossed eyes, or strabismus, occurs when your eyes don’t look the same way at the same time. There are six muscles attached to each of our eyes that, guided by signals from the brain, control their movements. When your eyes don’t align, the brain gets two different images. Over time, this can cause more serious vision issues. That’s a real problem, but it’s not caused by making your eyes cross on purpose for short periods of time.

MYTH #2. EATING CARROTS WILL HELP YOU SEE IN THE DARK.

Well, carrots certainly aren’t bad for your eyesight. They contain plenty of beta-carotene, which your body converts into vitamin A, a crucial vitamin for vision. But carrots don’t do anything exceptional for your nighttime vision.

MYTH #3: THE BIGGER YOUR EYES, THE BETTER YOUR EYESIGHT.

When you’re born, your eyeballs are approximately 16 millimeters in diameter, reaching 24 millimeters as an adult. But your eyes getting larger does not necessarily mean that your vision is getting better. In fact, excessive growth in human eyes can cause myopia, or nearsightedness. If the eyeball is too long, the eye’s lens can’t focus the light in the right part of the retina to process images clearly.

MYTH #4: PUPIL DILATION OCCURS ONLY IN RESPONSE TO CHANGES IN LIGHT.

We all know that pupils contract in light and dilate in darker conditions. But did you know that pupils also respond to changes in our emotional and mental state? Sexual arousal, solving a complicated mental math problem, fear, and other cognitive and emotional events can provoke changes in pupil size, though the precise reasons why are not yet clearly understood.

MYTH #5: UV RAYS CAN ONLY DAMAGE EYES WHEN THE SUN IS SHINING.

Even on cloudy and foggy days, ultraviolet (UV) radiation can cause eye damage. The rays can be reflected off of water, sand, snow and shiny surfaces. So make sure to keep your 100 percent UV protection sunglasses handy whenever you are out and about. Years of exposure can increase your risk of developing cataracts, a clouding of the eye lens that can cause vision loss.

MYTH #6: WEARING GLASSES TOO MUCH CAN MAKE YOUR EYESIGHT WORSE.

This myth suggests that over-reliance on glasses for common vision problems like nearsightedness, farsightedness, and astigmatism will weaken or damage eyes. That’s not true, nor will your eyes be damaged by wearing glasses with a prescription that’s too strong—though it may give you a temporary strain or headache.

However, children should still be given the correct prescription. A 2002 study found that giving children glasses with a prescription that is too weak can increase their myopia, while giving the correct prescription “reduces the progression of myopia.”

MYTH #7: READING IN DIM LIGHT WILL DIMINISH YOUR EYESIGHT.

How many of you recall your parents telling you to “put some light on the subject” when you were curled up with a good book in dwindling daylight? Having more light can certainly help you see better, because it makes it easier for you to focus. But while reading in semi-darkness may put a temporary strain on your eyes, it’s not going to permanently damage your eyesight. Recent studies indicate not getting enough daylight in general, however, may have a detrimental effect on vision.

MYTH #8: IF YOUR PARENTS HAVE BAD EYESIGHT, YOU WILL, TOO.

You might, of course, because some eye problems are genetic. But there’s no guarantee that we will develop the same vision impairments as our parents. One study found that if both parents are myopic, there’s a 30 to 40 percent chance that the child is. If only one parent is myopic, the child has a 20 to 25 percent chance, and it's down to 10 percent for kids with non-myopic parents.

MYTH #9: TOO MUCH SCREEN TIME WILL DESTROY YOUR EYESIGHT.

Optometrists frequently debate this topic, but most agree that it’s not too damaging for most people. Having said that, more and more people are complaining of symptoms like dry, irritated eyes, headaches, eye strain and difficulty focusing after prolonged periods of screen time. The American Optometric Association (AOA) defines this group of symptoms collectively as Computer Vision Syndrome—or Digital Eye Strain—which can be further exacerbated by trying to focus on small screens such as tablets or phones. The AOA recommends following the 20-20-20 rule to remediate the effects of screen time: Every 20 minutes, take a 20-second break to look at something 20 feet away.

MYTH #10: THE RIGHT "VITAMIN COCKTAIL" CAN PREVENT VISION DECLINE.

Recent studies don’t support the notion that the right combination of vitamins can keep your eyesight from deteriorating, according to Harvard researchers. A National Institutes of Health study showed that antioxidant vitamins may help slow the progression of macular degeneration, one of the most common causes of vision loss as we age. But for people not already suffering from the disease, preventative use of such vitamins didn’t appear to make a significant difference. Perhaps an effective vitamin cocktail will be discovered one day, but so far, there’s no proof that it works.

MYTH #11: DYSLEXIA IS LINKED TO VISION PROBLEMS.

A recent study from Bristol and Newcastle Universities in the UK found that children with dyslexia were no more likely than others to suffer from common vision problems like myopia, far-sightedness, squinting or focusing problems.

MYTH #12: IF YOU DON'T TREAT LAZY EYE WHEN YOU'RE A SMALL CHILD, YOU'LL HAVE IT FOREVER.

Lazy eye, or amblyopia, occurs when nerve pathways between the brain and the eye aren’t properly stimulated, causing the brain to favor one eye over the other. The weaker eye tends to wander, and eventually the brain might ignore signals received from that eye. While doctors say that the sooner it’s treated the better, there are an increasing number of remedies (including Tetris) that can help adults as well.

MYTH #13: BLIND PEOPLE SEE ONLY DARKNESS.

According to the American Foundation for the Blind, only 18 percent of people who have visual impairments are totally blind. Most are able to differentiate between light and dark.

MYTH #14: HUMAN VISION IS THE SAME IN SPACE AS IT IS ON EARTH.

Actually, NASA scientists have found that space can impair our vision, though they still aren’t sure why. A study of seven astronauts who spent more than six months on the International Space Station noted that all experienced blurry vision during and for months after their space mission. The researchers hypothesized that the shift of fluids toward the head that can occur in microgravity might have something to do with it. Now, NASA is following up with a study that will track the vision of crew members during and after long space missions to try and determine exactly why these vision changes occur in space.

MYTH #15: PEOPLE WHO ARE COLORBLIND CAN'T SEE COLOR.

The human eye and brain work together to interpret color from light, and each of us perceives color slightly differently. We all have photopigments—color-detecting molecules—in cone-shaped cells inside our retinas. But people who suffer from hereditary color blindness have defects in the genes that direct production of photopigments. It’s quite rare for someone not to see color at all, however. It's more common for color blind individuals to have difficulty differentiating between certain colors, like red and green, or blue and yellow. And while color blindness is far more common in males than females, it does affect a small percentage of women.

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Universal Pictures Home Entertainment
The 10 Wildest Movie Plot Twists
Laura Harring in Mulholland Drive (2001)
Laura Harring in Mulholland Drive (2001)
Universal Pictures Home Entertainment

An ending often makes or breaks a movie. There’s nothing quite as satisfying as having the rug pulled out from under you, particularly in a thriller. But too many flicks that try to shock can’t stick the landing—they’re outlandish and illogical, or signal where the plot is headed. Not all of these films are entirely successful, but they have one important attribute in common: From the classic to the cultishly beloved, they involve hard-to-predict twists that really do blow viewers’ minds, then linger there for days, if not life. (Warning: Massive spoilers below.)

1. PSYCHO (1960)

Alfred Hitchcock often constructed his movies like neat games that manipulated the audience. The Master of Suspense delved headfirst into horror with Psycho, which follows a secretary (Janet Leigh) who sneaks off with $40,000 and hides in a motel. The ensuing jolt depends on Leigh’s fame at the time: No one expected the ostensible star and protagonist to die in a gory (for the time) shower butchering only a third of the way into the running time. Hitchcock outdid that feat with the last-act revelation that Anthony Perkins’s supremely creepy Norman Bates is embodying his dead mother.

2. PLANET OF THE APES (1968)

No, not the botched Tim Burton remake that tweaked the original movie’s famous reveal in a way that left everyone scratching their heads. The Charlton Heston-starring sci-fi gem continues to stupefy anyone who comes into its orbit. Heston, of course, plays an astronaut who travels to a strange land where advanced apes lord over human slaves. It becomes clear once he finds the decrepit remains of the Statue of Liberty that he’s in fact on a future Earth. The anti-violence message, especially during the political tumult of 1968, shook people up as much as the time warp.

3. DEEP RED (1975)

It’s not rare for a horror movie to flip the script when it comes to unmasking its killer, but it’s much rarer that such a film causes a viewer to question their own perception of the world around them. Such is the case for Deep Red, Italian director Dario Argento’s (Suspiria) slasher masterpiece. A pianist living in Rome (David Hemmings) comes upon the murder of a woman in her apartment and teams up with a female reporter to find the person responsible. Argento’s whodunit is filled to the brim with gorgeous photography, ghastly sights, and delirious twists. But best of all is the final sequence, in which the pianist retraces his steps to discover that the killer had been hiding in plain sight all along. Rewind to the beginning and you’ll discover that you caught an unknowing glimpse, too.

4. SLEEPAWAY CAMP (1983)

Sleepaway Camp is notorious among horror fans for a number of reasons: the bizarre, stilted acting and dialogue; hilariously amateurish special effects; and ‘80s-to-their-core fashions. But it’s best known for the mind-bending ending, which—full disclosure—reads as possibly transphobic today, though it’s really hard to say what writer-director Robert Hiltzik had in mind. Years after a boating accident that leaves one of two siblings dead, Angela is raised by her aunt and sent to a summer camp with her cousin, where a killer wreaks havoc. In the lurid climax, we see that moody Angela is not only the murderer—she’s actually a boy. Her aunt, who always wanted a daughter, raised her as if she were her late brother. The final animalistic shot prompts as many gasps as cackles.

5. THE USUAL SUSPECTS (1995)

The Usual Suspects has left everyone who watches it breathless by the time they get to the fakeout conclusion. Roger "Verbal" Kint (Kevin Spacey), a criminal with cerebral palsy, regales an interrogator in the stories of his exploits with a band of fellow crooks, seen in flashback. Hovering over this is the mysterious villainous figure Keyser Söze. It’s not until Verbal leaves and jumps into a car that customs agent David Kujan realizes that the man fabricated details, tricking the law and the viewer into his fake reality, and is in fact the fabled Söze.

6. PRIMAL FEAR (1996)

No courtroom movie can surpass Primal Fear’s discombobulating effect. Richard Gere’s defense attorney becomes strongly convinced that his altar boy client Aaron (Edward Norton) didn’t commit the murder of an archbishop with which he’s charged. The meek, stuttering Aaron has sudden violent outbursts in which he becomes "Roy" and is diagnosed with dissociative identity disorder, leading to a not guilty ruling. Gere’s lawyer visits Aaron about the news, and as he’s leaving, a wonderfully maniacal Norton reveals that he faked the multiple personalities.

7. FIGHT CLUB (1999)

Edward Norton is no stranger to taking on extremely disparate personalities in his roles, from Primal Fear to American History X. The unassuming actor can quickly turn vicious, which led to ideal casting for Fight Club, director David Fincher’s adaptation of the Chuck Palahniuk novel. Fincher cleverly keeps the audience in the dark about the connections between Norton’s timid, unnamed narrator and Brad Pitt’s hunky, aggressive Tyler Durden. After the two start the titular bruising group, the plot significantly increases the stakes, with the club turning into a sort of anarchist terrorist organization. The narrator eventually comes to grips with the fact that he is Tyler and has caused all the destruction around him.

8. THE SIXTH SENSE (1999)

Early in his career, M. Night Shyamalan was frequently (perhaps a little too frequently) compared to Hitchcock for his ability to ratchet up tension while misdirecting his audience. He hasn’t always earned stellar reviews since, but The Sixth Sense remains deservedly legendary for its final twist. At the end of the ghost story, in which little Haley Joel Osment can see dead people, it turns out that the psychologist (Bruce Willis) who’s been working with the boy is no longer living himself, the result of a gunshot wound witnessed in the opening sequence.

9. THE OTHERS (2001)

The Sixth Sense’s climax was spooky, but not nearly as unnerving as Nicole Kidman’s similarly themed ghost movie The Others, released just a couple years later. Kidman gives a superb performance in the elegantly styled film from the Spanish writer-director Alejandro Amenábar, playing a mother in a country house after World War II protecting her photosensitive children from light and, eventually, dead spirits occupying the place. Only by the end does it become clear that she’s in denial about the fact that she’s a ghost, having killed her children in a psychotic break before committing suicide. It’s a bleak capper to a genuinely haunting yarn.

10. MULHOLLAND DRIVE (2001)

David Lynch’s surrealist movies may follow dream logic, but that doesn’t mean their plots can’t be readily discerned. Mulholland Drive is his most striking work precisely because, in spite of its more wacko moments, it adds up to a coherent, tragic story. The mystery starts innocently enough with the dark-haired Rita (Laura Elena Harring) waking up with amnesia from a car accident in Los Angeles and piecing together her identity alongside the plucky aspiring actress Betty (Naomi Watts). It takes a blue box to unlock the secret that Betty is in fact Diane, who is in love with and envious of Camilla (also played by Harring) and has concocted a fantasy version of their lives. The real Diane arranges for Camilla to be killed, leading to her intense guilt and suicide. Only Lynch can go from Nancy Drew to nihilism so swiftly and deftly.

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Jesse Grant, Getty Images for AMC
5 Bizarre Comic-Con News Stories from Years Past
Jesse Grant, Getty Images for AMC
Jesse Grant, Getty Images for AMC

At its best, San Diego Comic-Con is a friendly place where like-minded people can celebrate their pop culture obsessions, and each other. And no one can make fun of you, no matter how lazy your cosplaying might be. You might think that at its worst, it’s just a series of long lines of costumed fans and small stores crammed into a convention center. But sometimes, throwing together 100,000-plus people from around the world in what feels like a carnival-type atmosphere where anything goes can have less than stellar results. Here are some highlights from past Comic-Con-tastrophes.

1. MAN IN HARRY POTTER T-SHIRT STABS ANOTHER MAN IN THE FACE—WITH A PEN

In 2010, two men waiting for a Comic-Con screening of the Seth Rogen alien comedy Paul got into a very adult argument about whether one of them was sitting too close to the other. Unable to come to a satisfactory conclusion with words, one man stabbed the other in the face with a pen. According to CNN, the attacker was led away wearing handcuffs and a Harry Potter T-shirt. In the aftermath, some Comic-Con attendees dealt with the attack in an oddly fitting way: They cosplayed as the victim, with pens protruding from bloody eye sockets.

2. MEMORABILIA THIEVES INVADE NEW YORK

Since its founding in 2006, New York Comic Con has attracted a few sticky-fingered attendees. In 2010, a man stole several rare comics from vendor Matt Nelson, co-founder of Texas’s Worldwide Comics. Just one of those, Whiz Comics No. 1, was worth $11,000, according to the New York Post. A few years later, in 2014, someone stole a $2000 “Dunny” action figure, which artist Jon-Paul Kaiser had painted during the event for Clutter magazine. And those are just the incidents that involved police; lower-scale cases of toys and comics disappearing from booths are an increasingly frustrating epidemic, according to some. “Comic Con theft is an issue we all sort of ignore,” collector Tracy Isenhour wrote on the blog of his company, Needless Essentials, in 2015. “I am here to tell you no more. It’s time for this garbage to stop."

3. CATWOMAN SAVES THE DAY


John Sciulli/Getty Images for Xbox

Adrianne Curry, winner of the first cycle of America’s Next Top Model, has made a career of chasing viral fame. Ironically, it was at Comic-Con in 2014 that Curry did something truly worthy of attention—though there wasn’t a camera in sight. Dressed as Catwoman, she was posing with fans alongside her friend Alicia Marie, who was dressed as Tigra. According to a Facebook post Marie wrote at the time, a fan tried to shove his hands into her bikini bottoms. She screamed, the man ran off, and Curry jumped to action. She “literally took off after dude WITH her Catwoman whip and chased him down, beat his a**,” Marie wrote. “Punched him across the face with the butt of her whip—he had zombie blood on his face—got on her costume.”

4. MAN POSES AS FUGITIVE-SEEKING INVESTIGATOR TO GET INTO VIP ROOM

The lines at Comic-Con are legendary, so one Utah man came up with a novel way to try and skip them altogether. In 2015, Jonathon M. Wall tried to get into Salt Lake Comic Con’s exclusive VIP enclave (normally a $10,000 ticket) by claiming he was an agent with the Air Force Office of Special Investigations, and needed to get into the VIP room “to catch a fugitive,” according to The San Diego Union Tribune. Not only does that story not even come close to making sense, it also adds up to impersonating a federal agent, a crime to which Wall pleaded guilty in April of 2016 and which carried a sentence of up to three years in prison and a $250,000 fine. Just a few months later, prosecutors announced that they were planning to reduce his crime from a felony to a misdemeanor.

5. MAN WALKS 645 MILES TO COMIC-CON, DRESSED AS A STORMTROOPER, TO HONOR HIS LATE WIFE


Michael Buckner/Getty Images for Disney

In 2015, Kevin Doyle walked 645 miles along the California coast to honor his late wife, Eileen. Doyle had met Eileen relatively late in life, when he was in his 50s, and they bonded over their shared love of Star Wars (he even proposed to her while dressed as Darth Vader). However, she died of cancer barely a year after they were married. Adrift and lonely, Doyle decided to honor her memory and their love of Star Wars by walking to Comic-Con—from San Francisco. “I feel like I’m so much better in the healing process than if I’d stayed home,” he told The San Diego Union Tribune.

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