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Science

Researchers hacked 5 people's brains so they could see a new and impossible color

The new color 'olo' is neat, but the technique behind it could be groundbreaking.

Canva Photos

Only five people in the world have seen the mysterious color "Olo"

Color is one of the great joys of being alive. The brilliant blue sky, the green grass, the exotic pinks and purples and teals in coral or tropical fish. Soaking it all in is truly a feast for the eyes, and some studies even show that certain colors can trigger specific emotions in people. Orange may evoke feelings of joy, and red may conjure feelings of love, while blue may have a calming effect.

One of the most interesting things about colors, though, is that they are finite. Though the world is full of undiscovered plants, creatures, and even elements, the entire color spectrum is known and documented. Due to the nature of light in our universe and how it reflects off of physical objects, all perceived color must be created by some combination of the primary colors (blue, green, and red — yes, green, not yellow!). There are essentially unlimited combinations, but they all exist on a known spectrum — different hues and shades of pink or emerald or orange.

However, a team of researchers recently decided to push the limits of human perception. They "hacked" participants' retinas to allow them to see an impossible color.

color, green, blue, color wheel, physics, light, wavelengths, science The paint companies are dying to know the secret formula for the new color.Giphy

Scientists from the University of California, Berkeley, developed a new technique called "Oz," which would allow them to activate specific cones in the retina. Cones are light-sensitive cells that respond to different wavelengths of light. When the three types of cones are activated in different ways, our brains perceive colors.

One fascinating bit of background is that the "M" cone, which typically responds strongest to green (Medium wavelength), can not naturally be activated without also activating the Long and Short cones. So even the purest green on the planet would also, to a smaller degree, stimulate the parts of our eyes that are mostly correlated with red and blue.

retinas, eyes, oz, retina scan, retina cones, vision, colors A close-up of the human eye. Swapnil Potdar/Unsplash

The team wanted to find out what would happen if they could isolate and activate only the M, or green, cone using the new technique.

The result? The five participants reported seeing an absolutely unreal, brilliant shade of green like nothing they had ever experienced. Imagine a bright green laser cranked up to the highest saturation and brilliance possible, the purest and brightest green your brain could possibly comprehend. Participants noted that a bright green laser pointed looked "pale" in comparison to the new color.

The name of the new, impossible color? Olo, or 010 (indicated zero stimulation of the L and S cones and full stimulation of the M cones).

- YouTubewww.youtube.com

It's fair to wonder, if olo is impossible and can never naturally exist without manual stimulation of the retinal cones, what's the point of the experiment?

The introduction of a "new color" is certainly interesting and makes for a good headline, but the real value of this study lies in the future applications of the Oz technique.

The research team hopes that the detailed retinal maps they have developed, along with their ability to stimulate specific rods and cones in the eye in any combination, will enable major breakthroughs in the study and treatment of various visual impairments.

For example, Oz could one day cure color blindness or unlock new treatments for cataracts or glaucoma. It could even play a role down the line in curing certain types of blindness. Isn't it wild how our understanding of how our eyes perceive color tells us so much?

But those days are a long way off, for now. In the meantime, only five people in the world have experienced the brilliance of olo, and the rest of us will just have to imagine it.

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science

Health

Doctor explains those annoying eye twitches we all get (and when to seek help for it)

It's called "myokymia" and the causes range from totally benign to potentially serious.

Photo credit: Canva

What causes those tiny throbs in your eyelid?

You're just sitting there living your life when all of a sudden your eyelid starts going haywire. It's kind of a twitch, but more like a rapid pulsing or a fluttering—almost as if a tiny creature were trying to pound its way through the skin around your eye.

Not the most appealing visual, I know, but most of us have experienced those annoying eye twitches at some time and been baffled by them. Some of us may even have them on a regularly basis due to causes we either haven't pinned down or addressed. (I recently tried out monovision contact lenses for the first time and my eyelids twitched like mad for a week, which my optometrist confirmed was due to eye strain from my vision trying to adjust.)

Those pulsing twitches are known as facial myokymia, and the primary reasons for it were broken down by Dr. Joe, MD, an ER doctor who shares health information on his social media channels.

See on Instagram

"Have you ever had this?" he asked, showing a video of someone's lower eyelid pulsing. "This is something called facial myokymia and it's a persistent twitching of one of the muscles around your eye. The common causes associated with this include too much caffeine, stress, anxiety, poor sleep, dehydration, and some electrolyte problems." According to the Mayo Clinic, other common causes of eye spasms include alcohol intake, bright light, fatigue, nicotine, wind or air pollution, dry eyes, or other irritation of the eyes.

Dr. Joe said that the condition is usually harmless, which is true. However, on rare occasions eye twitching can be a symptom of a potentially serious condition. If eye spasms are persistent, it's a good idea to talk to your doctor about it.

How do you know when it's time to see a doctor about an eyelid twitch?

What does "persistent" mean when it comes to eyelid spasms? Are we talking hours, days, weeks, months?

The Mayo Clinic says eye twitching usually goes away on its own within a few days or weeks with enough rest, stress relief and decreased caffeine, but you should schedule an appointment to consult with your doctor if:

The twitching doesn't go away within a few weeks.
The affected area feels weak or stiff.
Your eyelid completely closes with each twitch.
You have difficulty opening the eye.
Twitching happens in other parts of your face or body as well.
Your eye is red or swollen or has discharge.
Your eyelids are drooping.

Many people shared that stress is the biggest and clearest trigger for their eye twitches. Others had success with changing their diet or supplementing to balance their electrolytes. A few shared that their eye twitches were early signs of a chronic condition, such as Bell's palsy or multiple sclerosis. (But again, most eye twitches are benign and most serious causes are accompanied by other symptoms.)

Some cultures assign meaning to eye twitches

People have tried to explain the unexplainable for millennia, which has resulted in various meanings being assigned to random eye twitches across different cultures.

According to All About Vision, in many cultures, a twitch in the left eye is often said to mean something bad is going to happen, while a right eye twitch indicates something positive will. For instance, in the Caribbean, a left eye twitch means someone is talking badly about you or that a friend is in trouble. A right eye twitch means someone is talking positively about your or that you might reunite with an old friend soon. However, the opposite is true in China—left means good and right means bad (except it might depend on the time of day as the meaning gets calculated with the Chinese zodiac and almanac).

In some parts of Africa, a spasm in your upper lid might mean an unexpected arrival and twitching in the lower lid means something will happen to make you cry. n India, a twitch might mean good or bad news, losing or gaining money or even a child being born, depending on where the twitching takes place.

What can you do to stop eye twitches?

Unfortunately, there doesn't seem to be much you can do once a spasm starts. One recommendation is to apply a warm compress to the eye to relax the muscles, but most of the tips for stopping myokymia come down to prevention.

Reduce stress and engage in more stress-relieving activities. Avoid drinking too much caffeine. Get enough sleep—even napping can help minimize eye twitches. Stay hydrated. Keep your eyes lubricated with drops if they tend to get dry. Basically, all of the things that contribute to overall health can help prevent eye twitches along with caring for your dry eyes.

So if your eyelid starts wigging out on occasion, don't be alarmed, but do see it as a sign that you may want to adjust some of your health habits. (And, of course, consult a doctor if they truly become problematic in your life.)

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health

Pop Culture

Trippy optical illusion makes people swear a Coke can is red. It's not. At all.

Try to make your brain NOT see the can as red.

Photo by Jeanson Wong on Unsplash

We know Coca-Cola cans are red, but that's not why it looks red in a viral optical illusion.

Optical illusions are wild. We can look at an image and swear up and down we see one thing, only to find out what we're seeing isn't what we're actually seeing at all.

Some optical illusions regularly go viral, like the not-really-two-dogs photo or the cat going up or down stairs drawing or the moving Van Gogh painting. (And we all remember the debates over "the dress," right?)

One that's making the rounds now is an image that appears to be a pixelated photo of someone holding a Coca-Cola can. The colors are muted, but the can definitely looks red.

But it's not.

In reality, the only visible colors in this image are black, white and teal (or cyan).

from woahdude

Seriously, zoom in.

Trippy, right? There's a similar version that uses a more stripey pixelation:

And there's another version made out of black, white and yellow that makes the Coke can appear blue (negating the idea that our brain is automatically making the can red because it's the color our brain expects it to be).

Again, no blue in this image when you zoom in. There's only black, white and yellow.

@daverai2019 @AkiyoshiKitaoka The same account posted one where the Coke can seems blue, and I don't think most people associate the brand with the colour blue \nhttps://t.co/ESeliXVsFD
— (@)

So what exactly is going on here?

It's the complicated way our colors work and the way our eyes perceive and process them in our brains. Here's how one Reddit user explained it when someone claimed the white in the Coke can wasn't really white:

"It is white. This is an example of simultaneous color contrast, a phenomenon that occurs when two adjacent colors influence one another, changing your perception of the colors. The cones in your eyes make it seem like it is pink. Cones give your eyes good color vision but can also play tricks with your brain, hence why from a distance, ie not zoomed in, the color appears pink and why you see the can of Coke as “red” even though there is no red in the image.

Essentially, the way your eyes see color in the first place is by contrasting it with other colors."

Another commenter verified that the white is, in fact, pure white. "The pixel color on the white is: #FFFFFF which means pure white. If there were any red in there we would see a variation on it like #FFFEFE. It is not a trick. It really is pure white," they wrote. "I too thought it might be a compression trick. Nope. Our brains just be weird."

Indeed, our brains do be weird.

Photographer and filmmaker Jared Bendis explained it in another way with a demonstration of the "Retinex effect," also known as color constancy. Essentially, because our eyes have to recognize color in varying kinds and amounts of light (otherwise how would we find food at different times of day), our brain is excellent at filling in blanks. How it works is rather complicated, so Bendis shows how it works using a photo of a bowl of fruit.

Our brains may be weird, but also very cool.

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optical illusions

CooperVision

Don’t let digital eye strain sideline you

All photos courtesy of Biofinity Energys®

True

If you spend many, many hours a day staring into the glowing light of a phone or computer screen, you’re not alone. Our world is increasingly dependent on technology, and our bodies are struggling to adjust.

Spending so much time on screens can cause tired eyes, headaches, or blurred vision. Sometimes you might feel like closing your eyes or mashing the palms of your hands into your eye sockets, or lying on the floor underneath your desk and waiting for Friday to arrive. These symptoms are otherwise known as Digital Eye Strain – and research shows¹ that many Americans—including kids!—are suffering from this but don’t know how to alleviate it!

Think about how many hours per week you spend on digital devices. Chances are, it’s more than you’d like to admit! Don’t worry, you’re in good company. Research shows that people over the age of 18² are spending the majority of the day engaged with some form of media, and most are unaware that their headaches may actually be due to all that screen time, not the content on the screen itself.³

The increase in screen time is especially hard on our eyes because we’re blinking less, which can lead to eye dryness, and our eyes can start to show signs of strain after just 2 hours of looking at screens.⁴ This is where Biofinity Energys^® contact lenses come in: lenses that help address symptoms of digital eye strain like eye dryness and tiredness.

Whether you are a student, a working professional or simply a person who enjoys streaming shows, Biofinity Energys^® could help your eyes feel less tired at the end of the day.⁵ While Biofinity Energys^® is not a cure for the pile-up of emails or the headaches caused by the world events covered on the screen, it may help with eye tiredness and dryness associated with digital eye strain.

A study conducted by CooperVision revealed that a whopping 77% of patients fit with Biofinity Energys^®say the lenses help their eyes feel less strained at the end of the day, even after a long day of using digital devices.^6,7 Additionally, 8 out of 10 digital device users agreed that Biofinity Energys^® contact lenses made their eyes feel less tired.⁸ These unique lenses feature Aquaform^® Technology to lock in moisture and can help your eyes feel less dry. They also have a proprietary Digital Zone Optics^®lens design to help with eye tiredness. These contacts are also made to work for day-to-day non-digital activities, making it easier to shift from online to offline events.

It’s time to level up your contact lenses! Talk to your eye care professional today to see if Biofinity Energys^® contact lenses are right for you, or visit BiofinityEnergys.com to learn more and to download a free trial certificate.

References:

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6020759/
https://www.nielsen.com/insights/2018/time-flies-us-adults-now-spend-nearly-half-a-day-interacting-with-media/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6020759/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6020759/
https://www.reviewob.com/how-many-americans-experience-digital-eye-strain/
Prospective, multi-center cross-over dispensing study, with bilateral wear of both Biofinity® sphere and Biofinity Energys® lenses. Sites: CCLR, University of Waterloo; CORL, Indiana University; CRC, UC Berkeley.
After one month of wear
Among patients who use digital devices at least 4 hours per day at least 5 days per week and self-report symptoms of eye fatigue at least once per week.

From Your Site Articles

The incredible story of baby Eva Grace: the superhero who never lived.

My wife Keri and I went in for the standard 19-week anatomy scan of our second child. As a parent, you think that appointment is all about finding out boy or girl, but it’s about a whole lot more.

In our case, our daughter was diagnosed with a rare birth defect called anencephaly — some 3 in 10,000 pregnancies rare. The phrase our doctor used in explaining it was "incompatible with life," which looks as terrible in words as it sounds. The child fails to develop the frontal lobe of the brain or the top of their skull. The chance of survival is 0%. We sat in a doctor’s office, five months before our daughter was to be born, knowing she would die.

The options weren’t great. There was (a) inducing early, which in effect was terminating the pregnancy or (b) continuing the pregnancy to full term.

Within a minute or so of finding out, Keri asked if we could donate the baby’s organs if we went to full term. It was on her heart and mind, but we left the doctor and still spent the next 48 hours deciding what we were going to do. It was excruciating. We considered terminating. We had to. Were we capable of taking on the weight of the 20 weeks ahead? In our minds, we were intentionally taking on the loss of a child, rather than the loss of a pregnancy. And, yes, there is a difference.

We decided to continue, and we chose the name Eva for our girl, which means "giver of life."

The mission was simple: get Eva to full term, welcome her into this world to die, and let her give the gift of life to some other hurting family.

It was a practical approach, with an objective for an already settled ending point. We met with an organ procurement organization called LifeShare of Oklahoma and found out we’d be the eighth family in the state to donate the organs of an infant.

There wasn’t much of a precedent or process in place because, until only recently, most parents of anencephalic babies didn’t know it was an option. There’s this weird gray area involved because, even without a brain, these babies can’t be declared brain dead. Her heart would need to stop beating, leaving a finite window of, let’s call it, "opportunity," to recover her kidneys, liver, and maybe pancreas and heart valves. We asked about other things, like her eyes or corneas, but LifeShare told us they’d never done that before, even with an adult.

All photos by Mitzi Aylor/Alyor Photography. Used with the permission of Royce Young.

Part of the difficulty of the decision to carry on was the physical pregnancy and the mental burden of carrying a baby for 20 more weeks knowing she would die. The kicks and punches to Keri’s bladder served as a constant reminder of what was inside. (Yes, Eva kicked like any other baby; her brainstem was complete, which is what controls basic motor functions. I know, we had a hard time wrapping our minds around it too.) She feared people asking what she was having or the due date or if the nursery was ready.

What we unexpectedly found, though, was joy in the pregnancy. We happily talked about our sweet Eva, and day by day, our love for her grew. We got excited to be her parents.

I think a big part of that was connected to the decision we made to continue on, which was empowering. She had a name, an identity, and a purpose. The idea of choice in pregnancy is a complicated one, and one I kind of want to avoid here. Wherever you fall, just know, we were empowered by our decision, our responsibility to be Eva’s mom and dad for as long as we could. We went from seeing the pregnancy as a vehicle to help others to looking forward to holding her, kissing her, telling her about her brother, and being her parents.

The time we’d have was completely unknown, with it ranging anywhere from five seconds to five minutes to five hours to, in some more optimistic estimates, five days.

We decided to have a planned C-section. We wanted to maximize our chances of seeing Eva alive and be able to control as many variables as possible.

There wouldn’t be any surprise labor in the middle of the night. We could have our first child Harrison there to meet his sister and grandparents ready to hold their granddaughter even if she was only alive for an hour or so. We wanted to do what was best for our girl. That’s what parents do.

As the date neared, the meetings and appointments cranked up. We had what everyone called the "Big Meeting," a gathering at Baptist Hospital of about 30 people that included multiple people from LifeShare, NICU nurses and doctors, neonatologists, and other "Very Important Hospital People." We were the first infant organ donor ever at Baptist, and they were developing a protocol on the fly. There were plans and contingency plans and contingency plans for the contingency plans.

The process was going to be delicate, and to be frank, it seemed increasingly unlikely that it would work. There were a lot of things that were going to need to go just right, even with the intricate plans that were being put in place. It was made clear to us over and over and over again how if Eva’s kidneys or liver didn’t go directly for transplant, they would go to research, and infant organ research is incredibly valuable.

But I wanted a tangible outcome. I wanted to be able to meet and hug and shake the hand of the person my daughter saved.

I couldn’t dream about what my daughter would grow up to be, so I fantasized about the difference she could make.

What if the person who got her kidneys became president? What if her liver went to a little boy and he goes on to win the Heisman Trophy? I was writing the "30 for 30" script in my mind every night as I went to sleep. It was something to hold onto; it was the kind of hope I wrapped up with both arms. Research was nothing more than a fail-safe to me, a Plan B that I didn’t want any part of.

There were some concerns from the hospital's ethics team about Eva and our plans. As I explained to them — and to anyone else out there who has this idea that we grew a daughter just for her organs — Eva was a terminal child. And as her parents, we elected to make her an organ donor. That’s it. She would be born, live an indefinite amount of time, and then we were choosing to donate her organs.

Then suddenly, we were in the two-week window. In two weeks, we’d be prepping to welcome our baby girl into the world and preparing to say goodbye to her.

I planned on sitting down that day to write Eva a letter, like I did before Harrison was born to give him on his 18th birthday. She’d never read it, but I was going to read it to her. Keri didn’t feel Eva move much that morning, but we both brushed it off and went to lunch. We came home, put Harrison down for a nap, and Keri sat down in her favorite spot and prodded Eva to move. She wouldn’t.

We started to worry. Keri got up, walked around, drank cold water, ate some sugary stuff. She sat back down and waited. Maybe that was something? We decided to go to the hospital. We held on to hope that we were just being overly anxious and didn’t take any bags.

We arrived, and a nurse looked for a heartbeat on the doppler: nothing. Not unusual; it was sometimes hard to find because of the extra fluid. They brought in a bedside ultrasound machine and looked. It seemed that maybe there was a flicker of cardiac activity. They told us to get ready to rush in for a C-section.

I just remember repeating, "I’m not ready I’m not ready I’m not ready I’m not ready." I was supposed to have two more weeks. What about the plan? What about Harrison? What about Eva’s aunts and uncles and grandparents? What if they couldn’t make it in time? What about her letter?

They brought in a better ultrasound machine. Keri and I had seen enough ultrasounds to immediately know: There was no heartbeat. Eva was gone before we ever got to meet her. The brain controls steady heart functions, and Eva’s finally gave out.

Keri rolled onto her side and put both hands over her face and let out one of those raw, visceral sobbing bursts. I stood silently shaking my head.

We had tried to do everything right, tried to think of others, tried to take every possible step to make this work, and it didn’t. No organ donation. Not even for research, our fail-safe. We felt cheated.

The word I still have circling in my head is disappointment. That doesn’t really do it justice because it’s profound disappointment. The kind of disappointment that will sneak up on me at different times, like when I’m mowing the yard or rocking Harrison or driving to a game.

Since there was no reason to control variables anymore, the doctors induced Keri into labor. The rest of Sunday and into Monday morning were the darkest, most painful hours of our lives. We had previously come to terms with the outcome and had almost found a joy in the purpose of our daughter’s life. We had looked forward to meeting her and loving her. We knew we’d hurt from her loss, but there was hope in the difference she was making. We had heard from recipients of organ donation that were so encouraging and uplifting.

But the deal got altered. It felt like we were letting everyone down. (I know how ridiculous that sounds.) I felt embarrassed because all that positivity about saving lives wasn’t happening now. (I know how ridiculous that sounds.)

On top of it all, the ultimate kick in the gut: We wouldn’t even see her alive. I struggled with the idea of Eva’s existence and her humanity all along, about whether a terminal diagnosis made her dead already. I clung to knowing her humanity would be validated to me when I saw her as a living, breathing human being. I wanted to watch her die because that would mean I got to watch her live. I longed for just five minutes with her — heck, five seconds with her. All of that practical stuff about organ donation was irrelevant to me now. I just wanted to hold my baby girl and see her chest move up and down. I just wanted to be her daddy, if only for a few seconds.

Eva came surprisingly quick on Monday. Keri forced me to go get some lunch — a sad, lonely lunch featuring me taking bites of chicken fingers in between sobs — and I got back to the hospital around noon. Keri sat up and felt some pain. Then she felt another shot of pain ring through her body. Our photographer had just arrived and was setting up. Keri started to panic and asked for nurses to come in. They checked her, and it was time to have a baby. I still wasn’t ready.

At 12:20 we called our family and told them to hurry.

At 12:30, our doctor, Dr. Pinard, arrived.

At 12:33 and 12:35, Laurie from LifeShare tried calling Keri.

At 12:37, Eva Grace Young was born. I cut her umbilical cord at 12:38.

My phone rang at 12:40 and 12:41, and then a text came. It was Laurie from LifeShare. "Hey Royce, it’s Laurie . Will you give me a call when you get a chance? I think I have some good news for you."

Keri and I held each other and cried as the nurses cleaned Eva, and Dr. Pinard called LifeShare for us.

Then, she walked up to the foot of the bed.

"I’m on the phone with LifeShare," Dr. Pinard said, a smile cracking through on her face. "They have a recipient for Eva’s eyes."

It’s weird to say that during probably the worst experience of my life was also maybe the best moment of my life, but I think it was the best moment of my life.

The timing of it all is just something I can’t explain. It wasn’t what we planned or hoped for, but it was everything we needed in that moment. I buried my head in my arms and sobbed harder than I ever have. Keri put her hands over her face and did the same. Happy tears.

This was our reaction when Dr. Pinard told us about Eva’s eyes.

As the nurses handed her to us for the first time, much of the dread and fear was lifted from us and replaced with hope and joy again. Here comes Eva Grace Young, the superhero she was always meant to be.

None of it went as we planned. We’re trying to rest on knowing we did the best we could. We always said we wanted to limit our regret, and I think in 20 years or so, as we reflect on this, there’s not much we’d change.

We’re proud to be Eva’s parents. We’re thrilled with the impact she’s made. People from around the world have sent us messages telling us they’ve signed up to be organ donors because of Eva.

Eva’s the first ever — not baby, but person — in the state of Oklahoma to donate a whole eye, and she donated two.

Because of her, LifeShare has made connections in other states to set up eye transplants for the future. They have an infant organ donation plan they now are working with sharing with other organ procurement organizations in Colorado and Texas. They call it the Eva Protocol.

I keep thinking about looking into her eyes some day, but more than anything, I think about her eyes seeing her mom, dad, and brother.

We always wondered things about Eva, like what color her hair would be, if she’d have Harrison’s nose, if she’d have dimples like her mama, or what color her eyes would be. In the time we spent with her, one eye was just a little bit open, and I fought the temptation to peek. I can’t ever hold my daughter again. I can’t ever talk to her or hear her giggle. But I can dream about looking into her eyes for the first time one day and finding out what color they are.

This story first appeared on the author's Medium and is reprinted here with permission.

Heroes

If this looks familiar, you may have cataracts. 2 new sci-fi fixes could help.

If you saw these pictures in a gallery, you might think the glass was smudged.

Delicate Arch in Arches National Park. Original image by David Hiser/Wikimedia Commons.

The right sides of these pictures are all blurry and kind of grey.

"Napoleon Crossing the Alps" by Jacque-Louis David. Image via Wikimedia Commons.

You'd obviously want to get someone to clean it up!

But what if the smudge was inside your eye?

Inside your eyes are natural lenses, like the lens of a camera. The lens focuses light onto the back of our eyes, where specialized cells interpret the image and send that information to the brain. Because all the light we see has to go through the lens, our bodies naturally make it transparent.

Sometimes, however, proteins in the lens start to clump together, forming a small cloudy area that destroys that carefully constructed lens transparency, like replacing a camera lens with a piece of frosted glass. This cloud is what's known as a cataract, and over time, it can spread to cover the entire lens in the eye.

Congenital cataracts. Image from National Eye Institute, National Institutes of Health/Flickr .

When this happens, cataracts cause our vision to become blurry and washed out. They can also make light glare really bad and give some people double vision.

More than 22 million Americans over 40 already have cataracts. By the time we turn 80, most of us will have them in some form.

Cataracts are the leading cause of blindness in the world and mostly happen to people as we age. They can also be found in children and younger adults due to congenital conditions, injury, or illness. About one in every 250 kids is born with or develops cataracts at young age.

Treatments for cataracts do exist. The current solution generally either involves stronger glasses or, if the vision loss is bad enough, surgery to replace an old, cloudy lens with a transparent plastic one.

A young person in Bali recovers from cataract surgery. Image from Agung Parameswara/Getty Images.

But cataract surgery does sometimes come with complications, and some types of the plastic replacement lenses sacrifice the flexibility of our biological lenses — they have trouble focusing on nearby stuff, for instance, and don't work super well in children.

Cataract surgery might be about to get a neat sci-fi upgrade thanks to new research involving stem cells.

Stem cells are a special kind of cells found in our bodies that can transform themselves into different types of cells (like eye cells or brain cells or kidney cells).

They've been a hot area of research, from anti-aging ideas to straight-up regenerating limbs.

Stem cells magnified on a computer screen. Image by Spencer Platt/Staff/Getty.

Two groups of researchers recently published studies investigating if stem cells could help re-grow biological lenses.

One group of researchers in Japan and the U.K. recently used human stem cells to grow cells from many different parts of the eye.

The scientists took human stem cells and coaxed them into transforming into eye tissue. They found that they could successfully make the cells divide into different layers as they grew.

Image from NPG Press/YouTube.

What's cool is that each layer corresponded with a different part of the eye. Cells from the first layer, for example, could potentially become part of the nerve-rich tissue at the back of the eye while cells from between the second and third layers could become the lens, and cells from layers 3 and 4 could become parts of the cornea.

The researchers were even able to successfully transplant the new stem-cell-grown corneas into rabbits. This technique could one day help doctors replace many different parts of people's eyes as they become damaged, although a lot of work needs to be done before we see any tests in humans.

Another research group, meanwhile, experimented with a surgical technique designed to help children regrow new lenses.

The technique is deceptively elegant because it doesn't require any new technology, just a twist on existing techniques.

“This is just a change in a surgical procedure,” said James Funderburgh, a cell biologist at the University of Pittsburghin a Nature press release. “They are not putting in an artificial lens: they are just letting the lens regrow.”

In this new technique, the surgeons use a smaller-than-normal incision to remove the patient's cloudy lens but don't implant a plastic one afterwards. That's because after the lens is removed, some stem cells are naturally left behind in the patient's eye, and it turns out that, by leaving them alone, the body can use those stem cells to grow a brand new lens.

This technique is slower than traditional methods because the child's eye needs about three months to grow a new lens. But the benefit is that the lens won't grow cloudy over time, like some artificial ones do, and the surgery has a much lower rate of complications.

Sunglasses help protect these kids' eyes a few days after cataract surgery. Image from Chris Jackson/Getty Images.

In fact, this technique was so successful, they've even used it on 12 human babies. It's been two years since some of them had the procedure done, and so far, the results seem promising. While this particular technique may not be as useful for older adults (whose cells grow more slowly), it could restore sight to a lot of young people.

“Even if it’s only for kids, it’s fantastic,” said Funderburgh.

Cataracts are one of the most common vision problems in the world, but these cool new tools could help those living with them see the world a whole lot more clearly.

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The incredible story of baby Eva Grace: the superhero who never lived.

My wife Keri and I went in for the standard 19-week anatomy scan of our second child. As a parent, you think that appointment is all about finding out boy or girl, but it’s about a whole lot more.

The mission was simple: get Eva to full term, welcome her into this world to die, and let her give the gift of life to some other hurting family.

What we unexpectedly found, though, was joy in the pregnancy. We happily talked about our sweet Eva, and day by day, our love for her grew. We got excited to be her parents.

We decided to have a planned C-section. We wanted to maximize our chances of seeing Eva alive and be able to control as many variables as possible.

I couldn’t dream about what my daughter would grow up to be, so I fantasized about the difference she could make.

Then suddenly, we were in the two-week window. In two weeks, we’d be prepping to welcome our baby girl into the world and preparing to say goodbye to her.

We had tried to do everything right, tried to think of others, tried to take every possible step to make this work, and it didn’t. No organ donation. Not even for research, our fail-safe. We felt cheated.

My phone rang at 12:40 and 12:41, and then a text came. It was Laurie from LifeShare. "Hey Royce, it’s Laurie . Will you give me a call when you get a chance? I think I have some good news for you."

As the nurses handed her to us for the first time, much of the dread and fear was lifted from us and replaced with hope and joy again. Here comes Eva Grace Young, the superhero she was always meant to be.

Eva’s the first ever — not baby, but person — in the state of Oklahoma to donate a whole eye, and she donated two.

If this looks familiar, you may have cataracts. 2 new sci-fi fixes could help.

If you saw these pictures in a gallery, you might think the glass was smudged.

But what if the smudge was inside your eye?

More than 22 million Americans over 40 already have cataracts. By the time we turn 80, most of us will have them in some form.

Cataract surgery might be about to get a neat sci-fi upgrade thanks to new research involving stem cells.

One group of researchers in Japan and the U.K. recently used human stem cells to grow cells from many different parts of the eye.

Another research group, meanwhile, experimented with a surgical technique designed to help children regrow new lenses.

Cataracts are one of the most common vision problems in the world, but these cool new tools could help those living with them see the world a whole lot more clearly.

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eyes

The new color 'olo' is neat, but the technique behind it could be groundbreaking.

It's called "myokymia" and the causes range from totally benign to potentially serious.

How do you know when it's time to see a doctor about an eyelid twitch?

Some cultures assign meaning to eye twitches

What can you do to stop eye twitches?

Try to make your brain NOT see the can as red.

My wife Keri and I went in for the standard 19-week anatomy scan of our second child. As a parent, you think that appointment is all about finding out boy or girl, but it’s about a whole lot more.

The mission was simple: get Eva to full term, welcome her into this world to die, and let her give the gift of life to some other hurting family.

What we unexpectedly found, though, was joy in the pregnancy. We happily talked about our sweet Eva, and day by day, our love for her grew. We got excited to be her parents.

We decided to have a planned C-section. We wanted to maximize our chances of seeing Eva alive and be able to control as many variables as possible.

I couldn’t dream about what my daughter would grow up to be, so I fantasized about the difference she could make.

Then suddenly, we were in the two-week window. In two weeks, we’d be prepping to welcome our baby girl into the world and preparing to say goodbye to her.

We had tried to do everything right, tried to think of others, tried to take every possible step to make this work, and it didn’t. No organ donation. Not even for research, our fail-safe. We felt cheated.

My phone rang at 12:40 and 12:41, and then a text came. It was Laurie from LifeShare. "Hey Royce, it’s Laurie . Will you give me a call when you get a chance? I think I have some good news for you."

As the nurses handed her to us for the first time, much of the dread and fear was lifted from us and replaced with hope and joy again. Here comes Eva Grace Young, the superhero she was always meant to be.

Eva’s the first ever — not baby, but person — in the state of Oklahoma to donate a whole eye, and she donated two.

If you saw these pictures in a gallery, you might think the glass was smudged.

But what if the smudge was inside your eye?

More than 22 million Americans over 40 already have cataracts. By the time we turn 80, most of us will have them in some form.

Cataract surgery might be about to get a neat sci-fi upgrade thanks to new research involving stem cells.

One group of researchers in Japan and the U.K. recently used human stem cells to grow cells from many different parts of the eye.

Another research group, meanwhile, experimented with a surgical technique designed to help children regrow new lenses.

Cataracts are one of the most common vision problems in the world, but these cool new tools could help those living with them see the world a whole lot more clearly.