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Why does my room suddenly look 'reddish'? My eyes seem to adapt to color

Why does my room suddenly look 'reddish'? My eyes seem to adapt to color



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To get the context of this question clear, I would like you to walk through some parts of my house.

We'll start with one of my rooms as it appears normally -

As evident, this part of my house has a creamish tinge to it, also the balcony door is open which further gives this room a yellow tint. Nothing special. I'll call it "area Y" (for yellow)*. Let's move on.

Here we arrive in another part of my house which has greenish/blue shades acting as a sunlight blocker. This gives this entire place a greenish/blue tint as shown. (Ref. "area G")

So, now let's visit the area Y again. I am always surprised with what my eyes now see. This. {1}

You see, the same room, same lightning, yet the room now looks much more reddish than before! That's what intrigues me, why does it happen? Why my eyes suddenly become sensitive to red color?

I am not a biology student but I do know that our eyes have cones which specialize in color perception, and that there are different types of cone cells to perceive different types of colors (If I remember my high school biology correctly).

So, I somewhat get a feeling of what's happening inside my eyes (or the brain perhaps?). I suspect that as I go to area G, my eyes 'adapt' to the dominance of bluish/green light, either by decreasing pigment of blue cones or by increasing pigment of red cones, which makes my eyes more sensitive to the other end of visible light spectrum (red-yellow), causing an 'outburst' of red coloration in area 'Y'. Since pigments need time to degrade, by the time the red color pigment of my cones decreases, its activity is less than normal. It may be increased as the blue pigment's activity is less than normal and I see a reddish tinge for few moments.

This was a pure hypothesis from my part, but it seems correct to me. But why do my eyes even adapt to blue color? Why can't my eyes be unbiased towards colors?

{1} Obviously I photoshopped the red tint in the image how else could I have replicated my vision? Though it's not the most accurate description of what I see it's still a very close approximation.


Short answer
The phenomenon you describe can be explained by the negative afterimage effect, which indeed is elicited by adaptive processes in the retinae.

Background
In the retina there are three types of color photoreceptors, called cones. They are sensitive to red, green and blue, respectively. Colors are processed in the retina through a process explained by the Hering model. This model assumes that there are two sets of opponent colors, namely red - green and blue - yellow (Fig. 1).

This model assumes that in the red-green opponent channel the red cones inhibit the output of green cones and vice versa. In the blue-yellow channel the blue cones inhibit the green/red (= yellow) cone output and vice versa.

Now look at the visual illusion shown in Fig. 2. This illusion nicely illustrates the effect. After looking at the image for half a minute, your cones adapt to the color input. Particularly relevant to your question is that the green cones adapt to the green and become less responsive to green (this happens when you are in your "greenish blue shade acting as a sunlight blocker. This gives this entire place a greenish [blue] tint as shown. (Ref. 'area G')." Now this in turn lowers the green inhibition of the red-half of the red-green opponent channel. In turn, when you enter your "part of [the] house [with] a creamish tinge to it, [] 'area Y' []" the green channel will not inhibit the red-half and everything will have a reddish hue to it, akin to looking at the white half of the illusion after 30 seconds below.

Reference
- Sci Am, October 2013


Fig. 1. Hering model of color vision. Left panel: brightness coding. Right panel: opponent colors code for color, namely the red-green and blue-yellow channels. source: Bio.SE


Fig. 2. Visual afterimage illusion. Look at the fixation dot in the middle of the tripartite circle on the left for 30 seconds. Don't look away. Now look instantly to the white part on the right. If you don't see much, or only vaguely, try again. Blinking may help to shortly enhance the illusion. source: Sci Am


Top Causes of Eye Problems

Most people have eye problems at one time or another. Some are minor and will go away on their own, or are easy to treat at home. Others need a specialist’s care.

Whether your vision isn’t what it used to be, or never was that great, there are things you can do to get your eye health back on track.

See if any of these common problems sound familiar. And always check with a doctor if your symptoms are really bad or don’t clear up within a few days.


Light Absorption and Color Filters

When white light shines on a red object, all of the colors that form the white light are absorbed except red, which is reflected. This is why the object appears red. A filter is a transparent material that absorbs some colors and allows others to pass through.

Light is the only source of color. Color pigments (paints, dyes, or inks) show color by absorbing certain parts of the light spectrum and reflecting the parts that remain. Color filters work the same way, absorbing certain wavelengths of color and transmitting the other wavelengths.

A yellow color filter will let through only yellow and absorb all other colors. So when blue light is allowed through a blue filter onto a blue object, the object will still reflect blue and therefore appear blue. But when blue light from a blue filter hits a red object, the blue will be absorbed and no light will be reflected, giving the object an appearance of being black.

Materials

  • Flashlight
  • Red, blue, and green construction paper
  • See-through colored cellophane paper
  • Camera filters in red, blue and green
  • Masking tape or a rubber band

Research Questions

  • Why did the papers look white, red, blue, and green (respectively) in white light?
  • How did the filters affect the white flashlight beam?
  • Why did the yellow and green papers seem to lose their color when red light was shined on them?

Procedure

  1. Darken the room as much as possible.
  2. Turn on the flashlight and aim it at the white paper. Observe and record the color of the paper in the data table.
  3. Repeat step 2 with the red, blue, and green pieces of paper.
  4. Place the red filter in front of the beam of the flash light as shown using tape or a rubber band to secure the cellophane paper filter. Shine the filtered beam on the white, red, blue, and green papers and record the colors seen.
  5. Repeat using the blue filter and then the green filter. After each test, record the results.

Digging Deeper

Place a filter in front of the light source. Combine two colored filters. Now combine three colors. Experiment with many different combinations.

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Pinkeye (Conjunctivitis)

This is a common cause of watery eyes for both children and adults. It can make one or both of the eyes look pink or red and feel itchy and gritty, like there’s sand in them. Infections with bacteria or viruses are the most common cause. Viral infections don’t need treatment, but you might need antibiotic eye drops if it’s bacterial.


The World’s Most Amazing Camera: Part 4 – Adaptation

The human eye is a marvel of design. All the parts work together to provide us with a vivid and colorful mental picture of our surroundings. As an astronomer, one aspect of human vision that I find particularly amazing and useful is the ability of the eye to adapt to extremely different lighting conditions. At night, the eye adjusts to be able to see stars that are 12 trillion times fainter than the sun. The way this mechanism works is ingenious and is merely one example of the cleverness of the Lord and of His grace toward us.

Light and Dark Adaptation

When you first step outside on a clear, moonless night far away from city lights, you can see a few of the brighter stars. After a few minutes, more stars become visible. And after a half hour, the sky appears much brighter with thousands of stars and the faint cloud of the Milky Way stretching from one horizon to the other. The eyes have adjusted to a low-illumination setting: a phenomenon called dark adaptation. Conversely, when you first step outside from a dark movie theater on a bright sunny day, the sky is so bright it is almost painful. But then after a few minutes, the eyes adapt and it doesn’t seem so overwhelmingly bright. This process is light adaptation.

In a previous article, we discussed how the pupil of the eye can change size to adjust for rapid changes in light intensity. The pupil is the dark center of the eye, surrounded by the iris – the colored part of the eye. The iris can contract or expand to change the size of the pupil this regulates how much light enters the eye. The pupil can be contracted down to 2 millimeters in diameter or expanded up to 8 millimeters – a factor of 4. Since the light entering the eye through the pupil is proportional to the area and thus the square of the radius (or diameter), the pupil can change the light entering the eye by a factor of at least 16. The rate at which the iris contracts or expands is quite rapid. Therefore, you can adjust to a brightness change of a factor of 16 almost instantly!

But your eyes have another way of adjusting to much greater changes in ambient illumination. The retina has the capacity to adjust the sensitivity of the light-detecting cells in the retina – the rods and cones. This process is much slower than the rapid adjustments of pupil size. But its range is much greater. The changing sensitivity of the rods and cones in the retina is why you can see clearly on a bright sunny day, or a dark starry night.

Sensitivity refers to the amount of signal that is generated by rods or cones when they receive a given amount of light. Although rods can apparently detect a single photon of light, they are wired together so that they will not send a signal to the brain unless at least 5 to 9 photons are detected within a timeframe of 100 milliseconds. This is a noise-reduction mechanism it prevents you from seeing a distracting pattern of “static” at night like you might see on an old television that is not tuned to any broadcast station. For this reason, there is a minimum illumination needed to see anything at all.

Just above the minimum level of illumination, the rod will send a signal of 1 instead of 0 (the number 1 representing the weakest non-zero response). As the illumination increases, so does the signal. Perhaps 20 photons within the timeframe will generate a signal of 2. The response is non-linear. So it might take 50 photons to generate a signal of 3, rather than just 30.

In any case, the sensitivity of the rods and cones can be changed. They become more sensitive under dark conditions – only faint light results in a large signal. And they become less sensitive under bright conditions – a stronger light is needed to result in a given signal. So, while 50 photons may generate a signal of 3 at night, during the day perhaps 50,000 photons are necessary to generate a signal of strength 3. In fact, the minimum illumination necessary to generate any signal at all will be much higher in bright conditions than in dark conditions. The way in which the retina adjusts its sensitivity is ingenious, and is due to the chemical processes by which light is transformed into an electro-chemical response.

The Chemistry of Light Detection

Rods have a protein within them called rhodopsin. This chemical has two components: opsin and retinal, which are bonded to each other. When light strikes rhodopsin, it causes the protein to change shape, and then break into opsin and retinal. This process is called bleaching because it literally changes the color of the retina from red to orange, yellow, and finally, transparent. Bleaching triggers a series of steps that result in (potentially) an electro-chemical signal to the brain.

Before the bleached retinal and opsin can once again convert light into an electrical signal, they must be reunited into the correct form of rhodopsin – a process called pigment regeneration. This process requires the enzyme vitamin A, which is converted to retinal and is contained in a layer called the pigment epithelium which lies just behind the rods (and cones). The body can produce vitamin A from beta carotene which is found in plants. Beta carotene is what gives carrots their distinctive color. So, carrots really are good for your vision.[1]

The Chemistry of Dark Adaptation

Exposure to light is constantly breaking down rhodopsin in the rods. However, retinal from the pigment epithelium is constantly being used to restore that rhodopsin. These two processes eventually reach an equilibrium condition in which the rhodopsin destruction rate matches its creation rate.

Now consider what happens in a very bright setting. With all that light, most of the rhodopsin in the rods is quickly depleted, having been converted into opsin and retinal. Although the rods are constantly replenishing the rhodopsin, the influx of so much light breaks down the protein faster than it can be re-built, resulting in relatively few rhodopsin proteins at any given time. Therefore, most of the light that enters the rod does not have the opportunity to strike a rhodopsin protein (since there are so few), but instead passes through without generating a signal. The bleached rods have become relatively insensitive to light. They generate only a modest signal even in the presence of very bright light.

Now consider what happens in a very dark setting. Since there is very little light to bleach the rhodopsin, the rods have plenty of time to produce the maximum amount of this protein. After about 30 minutes or so, the rods have as much rhodopsin as they can store. So, what happens when even a very small amount of light enters the rod? Since there is abundant rhodopsin, the likelihood that the light will strike one of these proteins is very high, thereby (potentially) resulting in a signal. The rods have become very sensitive to light. So, even a small amount of light results in a relatively strong signal. Since it takes about 30 minutes to produce the full amount of rhodopsin in the rods, this is roughly how long it takes to dark adapt. However, additional slight increases in sensitivity can occur for the next hour and a half.

Although it takes about 30 minutes for the rods to fully dark adapt, it takes only seconds for them to light adapt. The process of bleaching the rhodopsin is due solely to the amount of light that reaches the rods per unit time. This is why it is a bad idea to turn on lights when you are stargazing once you have become dark adapted. Bright light will spoil that adaptation in seconds, requiring another 30 minutes to fully re-adapt.

Cones can also dark adapt using the same kind of process. But they cannot reach the low-light sensitivity of the rods. Instead of rhodopsin, each of the three cones has a particular photopsin that breaks and triggers a signal when exposed to certain wavelengths of light. These photopsins are replenished in the cones in the same way as rhodopsin is in the rods. But, when both are maximally dark adapted, cones are not nearly as sensitive to light as rods. In fact, after about 3 or 4 minutes in a pitch-black setting, the cones are as dark-adapted as they can get. After about 7 to 8 minutes in a dark setting, the rods have surpassed the cones in sensitivity, and you are relying primarily on your rods to see at that point. Fully dark-adapted rods are able to detect light that is hundreds of times fainter than fully dark-adapted cones.

This is also why astronomers typically use red flashlights. The rods are most sensitive to light of medium wavelengths, in the “green” part of the spectrum. Rods cannot detect long wavelength (“red”) well, but the L-cones can. Thus, using a red flashlight allows an astronomer to briefly use the cones to read something without ruining the dark adaptation of the rods.

As mentioned in a previous article, the part of the retina corresponding to our center of vision is called the fovea, and is packed with a very high density of cones. This is why we have such a crisp view of something only when we look directly at it. However, to make room for all those cones, the fovea has no rods at all. This results in an interesting situation under very dark settings. Under conditions too faint for the cones, the rods provide us with a picture of our surroundings except for the center of our vision. Essentially you have a “blind spot” in the center of your field of view – as far as your night vision is concerned.

To experience this, try the following experiment on a clear, starry night, far away from city lights. After 15-30 minutes in the dark, your rods will be well-adjusted and you will be able to see very faint stars. Pick a faint star in your peripheral vision, maybe 15 to 30 degrees away from the center of your field of view. Then look directly at it. If the star is faint enough, it will seem to disappear! Look away a bit, and the star will reappear in your peripheral vision. This may seem very strange at first, but astronomers quickly become adept at using averted vision: looking not directly at an object, but a bit to the side. This provides the best view of faint objects – those too dim to be detected by the cones.

A Versatile System

The eye is superior in its adaptability. The Lord designed it with a suite of data processing cells to reduce unwanted noise, and photoreceptors ingeniously distributed to provide both a wide field of view and a high-resolution image for objects near the center of vision. The two eyes work together to provide us with a nearly instantaneous 3-dimensional color mental representation of our surroundings. So that we can see both during the day and at night, the Lord has equipped our eyes with a system of both cones and rods. The cones deliver a full-color experience in bright settings, allowing us to enjoy the beauty of a rainbow. Conversely, the rods are grayscale, but can adjust their sensitivity to detect very faint sources of light. This allows us to enjoy the beauty of the night sky. We are indeed fearfully and wonderfully made (Psalm 139:14).

[Next, the inverted retina in part 5].

[1] Vitamin A can also be taken as a supplement. However, care must be exercised since a vitamin A overdose can lead to problems. Eating beta-carotene is a better option because the body then regulates vitamin A production.


A doppelgänger story looking for its dopplegängers!

I'm here to share a doppelgänger experience from my childhood and would greatly appreciate if others could do the same. It's been a good 14 years since this experience and I'm still trying to form some kind of rational thoughts about it. I figure hearing about other people's run ins with "stunt doubles" (as I've taken to calling them) might help me piece things together.

I'll be the first to admit that I didn't have a great childhood. I faced a lot of abuse, was under a lot of stress, and can not with out a doubt rule out the possibility of stress-related hallucinations being the cause of the following occurrences but I also can't bring myself to write it all off so easily.

When I was 9 I stayed home "sick" from school. I distinctly remember that I wasn't actually sick, simply playing hooky to avoid bullying (kids are cruel) as I did that a lot around that age. I awoke from a nap, turned on the tv in our living room, and scrolled through some channels when my "mother" suddenly leaned over the bar and stared at me without saying anything. I had been awake for a few minutes at this point so I can't rightly blame sleep paralysis for all of this. Now, whatever this thing was, it was entirely IDENTICAL to my actual mother. It sounds weird to describe, but it's as if the only difference was that this thing pretending to be my mom had never felt a single emotion in it's life. It was unsettling. It beckoned me, and I attempted to talk to her as I would my mother. She kept beckoning, refused to answer, and that's when I sensed something horribly wrong. The whole scenario felt disgustingly familiar, but I'll get into that later. Naturally, I started screaming at this thing to answer me. It just kept beckoning. I bolted, running out of the room and into the yard yelling for help. My mother, the real one, had been working in the yard and came rushing over. I told her what Iɽ just seen and she soothed me with easy explanations that it must have been a fever dream, but thankfully stayed by my side the rest of the afternoon as I was a nervous wreck.

Now, the whole thing was familiar because Iɽ seen this doppelgänger before. I don't have the best memory in the world, I couldn't tell you a single other dream from my childhood but I do remember one distinctly in great detail. I must have been 6 or 7 when I had it, just a few years before my waking-life experience with this. thing. In the dream the doppelgänger stood over my sleeping mother's body. I tried to wake her, somehow knowing that was the /real/ her though they both looked entirely identical. The other-mother didn't speak, just beckoned. Not knowing what else to do, I followed - trusting blindly in the way only children do. She led me down a hallway that didn't exist in my home and into a plain white room where she stood in the corner and watched, expressionless, as a hulking dark shape skinned my body with an axe. Now, I may have had a pretty fucked up childhood. but this was an abnormal dream for any child that age, abused or not. I feel now as if it was a warning: things aren't always what they look like. I often wonder about if I had never had that dream & what would happen if I had followed the doppelgänger when she beckoned me.

Have any of yɺll ever experienced anything similar? All doppelgänger experiences I've read include them being strangely mute - has anyone ever gotten one of them to talk? Why do they always seem to take the place of your most trusted loved one? Share your experiences here if you could, please. Even if I don't get any clues or information out of them, maybe they're make me feel a tad less crazy.


Please do not stare into the eyes of your reflection in the mirror.

You know that experiment where you stare into the mirror at your own eyes and hold the gaze until you start seeing your face go all weird. If you haven't, please do not try it out. I am begging and warning you. I repeat, do not try it. I hope by the end of reading this, I have convinced you as to why you should not try this. I loved doing weird experiments that gave me a warped version of reality, something to break the monotony of life, you know. As a 22 year old that just got stuck into a 9-5 job, I desperately tried to change things up. I didn't want to do drugs, so I tried experiments like the above.

When I first read about this mirror experiment, I thought it was absolutely amazing. It was so cool to see things change right before your eyes. I remember one particular time when my face got so warped it no longer looked like me. Heck, it didn't even look human. I was absolutely thrilled.

So I tried doing this experiment under different lights. Like a bright light, red light, dim light and lastly the candlelight, just to see the effects of each light. You don't realize how just one single action could completely turn your life around. Like not being able to answer questions on Titration in Chemistry made me get a C for that course and as a result, I could not get into medical science. Which changed my degree completely and as a result my job. My life could have been totally different, had I gotten into medical school. Anyways, the point is, it's always the smallest of things that can have a major impact and for me, it was three simple lit candles.

So one day I decided to try out the experiment in candlelight. Oddly this time I felt scared. Don't ignore your gut feeling. It is honestly like a second brain. In fact, I think studies have proved it, google it or something. So I felt quite odd but decided to go ahead anyways. I lit up three candles, enough to illuminate just my face. I started the experiment as usual and stared into my eyes. 20 seconds had passed and instead of my face changing, as usual, it remained the same. I decided to continue for longer, despite the itching sensation of unease. Then my face started changing, slowly and clearly. My eyes came too close to each other, they had become red. I didn't realize I had been smiling, but I could see myself smiling widely. It was one of those smiles where you can see the gums on your teeth. They looked so red. I got freaked out and closed my eyes. When I opened, just for a split second I saw that warped image of myself again. I thought it must have been one of those images that are sort of retained in your memory and play out afterward. Like when you see negative images on your computer screen and then when u see a white wall, you see the image.

I brushed it off and did not see myself in the mirror the whole day. That night I decided to brush my hair in front of my mirror and I swear for a second I saw my warped version standing behind me, with that same smile. I quickly turned around, almost screaming, but didn't see anything. Thankfully.

After that, I didn't see anything odd for a while. I did stop with the stupid experiment. Then after a while, at my friend's house, I saw it. I saw it while I was drying some silver pots and I saw my own face, sort of blurred out but then I also saw that odd warped image of myself. I almost dropped my pot.

From then on, my warped image made a daily appearance on any reflective surface. Windows at work, puddles on the street, bathroom mirror, laptop reflection. If it reflected an image, my warped image made an appearance. If you are wondering how I kept my sanity, well to be honest I don't know. I stopped looking at myself in the mirror and got rid of all reflective things in my house and tried to stay away from reflective things. I got my best friend to come stay with me, telling her I was just feeling lonely. My parents are in another country so sadly could not flee into their protective arms.

Never did I think, something I was so familiar with, like my face, myself, would scare me. Every time I look at my hands or body, I looked at it for just a second longer, just to make sure I know it's me. You know the phrase, I know it like it's the back of my hand, That's pretty stupid. Because until this time I had not paid much attention to the back of my hand and now every time I do, I question if it's the same hands I saw the last time. Anyways, I digress.

I needed to share this information with a person. Someone who is smart and could comfort me. Though not very religious, I always enjoyed going to temples as I am a Hindu. I found it calming and safe. I had become quite close with the priest there over the years and he would always tell me wonderful practical stories about life and other important lessons. So I decided I would tell him of my odd experience.

I met him on a Tuesday night. Usually, Tuesday's are the quietest, so I thought it would be a good idea. After the usual routine of praying etc, I asked if I could share with him something. He was more than happy to listen. For someone who is always calm, I did not expect his reaction. The minute I told him about the reflection, his face looked extremely worried and he abruptly looked away from me. Once I finished telling him the story, he took the golden jug of holy water and literally emptied it on me right then and there. Usually, priests give a drop of that water with a little golden spoon, not empty the entire contents of water onto you. Before I could say anything, he went and handed me a lemon, without looking at me again, along with some other herbs and told me to take them with me. He told me to stay away from reflections and told me to come back next week. When I tried to talk, he still not looking at me, told me to leave and come back next week. You can imagine how scary that must have been. A priest freaking out, that fucked me up.

So guys here I am, writing this down in the hopes that someone else has had a similar experience and/ or could provide some help or some sort of comfort. And I could really use the help, because my warped image that used to appear in reflections, I saw it yesterday at work, not on a reflection, but standing near my colleague's desk.


ELI5 Why does my vision seem grainy when in low or no lighting?

Okay, so I might be alone in this, I don't know, I've never asked anyone. But when I'm, for instance, lying in bed with the lights out, why is it that when I look around the room everything appears to be so grainy, almost like static on an old CRT TV?

In the back of your eye, in your retina, you have two types of light receptor cells, rods and cones. Rods detect light vs dark and cones detect color. In dim light, your cones are effectively blind and only your rods are working. You not only lose a sense of color but of sharpness. You also have more of a concentration of cones (vs rods) towards your fovea centralis (the part of your retina that is focusing on each letter as you read it right now). Next time you're looking at a starry sky, let your eyes adjust to the dark for a while and then find a very dim star. Look at the same star out of the corner of your eye and it will appear slightly brighter, due to a higher concentration of rods (vs cones) in that area. The graininess and blurriness of dim vision is a cool effect of this too, and here is a blog entry I really like showing how various artists have captured the effect in paintings.

There is always a bit of "static". If you concentrate on your vision even right now looking at your screen, or a blank piece of paper, there's no "perfect" white (or black, or whatever) background. Concentrate specifically on an area where the colour is flat: that "flat" colour of the background is actually made up of different coloured "pixels" in your vision (not on the screen) that your brain recognises as "flat" as it averages out the information in accordance with your learned experience.

The graininess of your vision in low light is what it looks like when these static-like fluctuations are not easy for your brain to average out into a definite shape or colour or tone.

So basically that "graininess" is always there, it's just much less noticeable when there's plenty of light because your brain has a lot more information to go on, to discern the shapes, movement, colour and tones that our vision is tuned to pay attention to.

As an aside I remember as a kid in year . 2, I think, playing "eye spy" during lunchtime at school and saying I saw "dots" in the air, referring to this static. Then when nobody else knew WTF I was talking about, for a little while I thought I had super-vision and I could see molecules in the air. Which is silly because then I should be able to see turbulence etc. It wasn't until later that I learned about the structure of the eye, and then CCDs, and it all made sense. XP


If the man you’re interested in is trying to get your attention, he probably likes you.

He wants you to think he’s smart and successful.

For a long time, that’s all women wanted in a guy: someone to provide for her.

But these days, he’ll have to go out on a limb to talk about the good deeds he has done, the people he has helped, and the changes he has made in people’s lives.

Watch for him going on and on about how he saved a stray puppy and you’ll know he’s digging you.

DOES HE LIKE ME QUIZ: What would Sigmund Freud say? Answer a few simple questions about the subtle dynamics between you and the guy you like, and we’ll give you the answer. =>> Take the quiz here.


5. Eye pain

Your eyes should never hurt, so any pain should be taken seriously.

Although eye pain may have a very obvious cause, such as injury, there are other problems that could be going on that range from benign to potentially blinding conditions like optic neuropathy or angle-closure glaucoma.

Be especially careful around fireworks. According to the U.S. Consumer Product Safety Commission, fireworks were involved in about 11,000 injuries treated in emergency departments in 2016.

Eye injuries caused by fireworks are almost always serious. “You can’t outrun a bottle rocket,” said Taylor, adding that injuries can include burns, abrasions and eye ruptures.

If fireworks are legal in your area, take some common sense precautions like keeping them away from kids and wearing safety glasses.

If you do get hurt, go to an emergency room. Don’t rub, rinse, or apply pressure. Don’t ever try to remove anything that’s in your eye. Leave that to the medical professional.

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