Why do we see million of tiny dots in our vision like tv snow in the dark?
968921
I see them too in the dark.. and I have 20/20 vision so I don't think there is anything wrong with you unless it becomes prominate.\n\n\nAsk your family doctor it couldn't hurt. \n\nI always thought it was for this reason...... your eyes are made up of rods and cones that pick up light and color\n\nI see this as being similar to pixles on a tv\n\nour eyes have pixles so to say, and in the dark for our eyes to create the image, you get light and dark pixilation... just my opinion...\n\nwhen it's really dark I see static, not just black..... I know exactly what your talking about\n\n\nyour the first person who has ever said this
21452
Snow is actually clear like ice in a tray. Snow is simply a smaller version of that. It only appears white because of its small particles of ice and light reflection. there is always light reflecting even at night so the snow will still appear to be white.
959921
It could be an Ophthalmic Migraine.\n\n"Ophthalmic migraine is quite common. Patients usually experience visual symptoms of seeing bright zig-zag type lines in their central or peripheral (side) vision. These bright lines may have associated flashing light sensations and sometimes can interfere with vision. There are many variations of symptoms. These symptoms usually resolve spontaneously after several minutes but usually less than one hour. Often, rest in a darkened room can be helpful during a migraine attack. Medical treatment is usually not necessary."
195526
It's the same reason stars twinkle--light traveling through the atmosphere gets distorted and flickers.
549348
On the back inner surface of each eye is a unique tissue called the "retina." All images entering the eye fall on the retina - just as images entering a camera fall on the film. The human retina contains two types of light-sensing cells: \n\nThe "cones" are specialized cells which fill the central part of the retina. The cones sense and discriminate colors. They also see most clearly, giving us our sharp, clear, fully colored, daytime vision. The cones, however, see only ahead but not to the sides (no peripheral vision), and they do not sense very dim light. The cones function with and complement the functions of other retinal cells called the "rods." \nThe "rods" are specialized cells which fill the peripheral or the off-center portions of the retina. The rods see only in black, white and gray. They do not discriminate colors. The rods give us side or peripheral vision, in bright daylight, in very dim light, and in mixed lighting conditions such as being on a dark road at night with bright oncoming headlights shining into one’s eyes. In very dim light, with no bright lights visible, a person is probably seeing with his rods, only. This is confirmed if everything appears in black, white and gray – without colors. In a dim-light environment, with one or two bright pinpoint lights, the person sees with both the cones (for the bright light) and the rods (for the dim light). Unfortunately, prolonged viewing of a bright light in a dim field causes the wide pupils to close to smaller sizes and may also desensitize the rods - temporarily reducing the person's ability to see in dim light. Thus, nighttime drivers want oncoming cars to lower their headlight beams, to prevent their being blinded. Once the bright light is gone, the pupils open up again and the rod cells resensitize, thus restoring good night vision. Most aircraft and some autos use red lights to illuminate the panel instruments because this color does not contract the pupils or overload the rods. \nCategory 1 – Blurred Vision in Dim Light … with sharp vision in moderate to bright light. These people see clearly in daylight but with blurred vision at night or in semi-darkness. They usually do not complain of "too little" ambient light and they do not complain of glare. People with this problem are the most numerous of all the people with night vision impairments and are often in their 40's or 50's. MOST CAN BE HELPED EFFECTIVELY with a pair of prescription glasses prescribed especially for night driving or outdoors night vision at distance.\n\nMOSTLY AFFECTED are people whose ages range from the mid-40's to the mid-50's who are starting to become presbyopic due to aging. Typically, the person has some slight refractive error that does not affect visual acuity in bright light … but does reduce the person’s visual acuity in dim light. This results in the “blurred night vision” complaints. In most cases, both eyes are affected equally. People whose two eyes react differently should refer to additional information below.\n\nTHE CAUSE of "impaired night vision" in these cases is, most often, variation in the "depth-of-focus" of each eye with exposure to bright or dim light - and the resulting closing or opening of the eye's iris. In bright light, with the iris closed and the pupil of the eye small or even “pinpoint,” there is great depth-of-focus so that objects near and far remain in sharp focus. This conceals minor refractive errors such as common myopia (nearsightedness) and/or astigmatism (non-uniform corneal curvature distortions). A person attempts to drive at night in an area that has little or no ambient artificial lighting. The pupils become large as the iris opens. More light comes into each eye so that there is no complaint of being "night blind." However, with the large pupils, the depth-of-focus is reduced and the distant scene or road, sidewa
1049206
it's probably not a disease but something we all experience sometimes. It sounds like"floaters", bits of stuff inside the eyeball that we see. Sometimes we see them more in bright sunlight. Go to an eye Dr. if you have a great deal of floaters. Usually nothing at all to worry about.
334870
It's all about night vision.\n\nThe amount of light refracted in a cat's eye is much higher than ours.\n\nIn a dark room, the smallest amount of light will be bounced off the retina in the cats eye, to us all is dark and there is no light.\n\nJust like a dog being able to hear sounds that are above the sound frequencies that we can hear.\n\nHope this helps!
456370
Hmmm, could be different things.  \n\nGenerally flashes can be one whole thing.  One way this happens is when blood is rushing out of the head to other parts of the body(Like when someone is about to faint).  Standing up really fast after sitting a long while you can see dots of light floating around like a cartoon character would see stars after getting hit on the head with a mallet.\n\n"Floaters" can be a whole other.  Whenever you stare at bright light, temporarily part of your vision will "turn off" to protect itself.  Then you'll have a little black spot(or a while spot in the dark) floating around like bug.  Sometimes they can be permanent(in extreme cases, like staring at a solar eclipse), but usually for other medical reasons.\n\nThose are just examples, but there are lots of reasons why you can see odd things in your vision.  For example, I have strabismus(crossed eyes).  When an eye tries to jerk to one side really fast I sometimes see a black splotch in my vision for a second.  I've been told that's because the fast jerk is pulling the optic nerve on the back of my eye.  And the splotch is the back of the nerve on the retina(the "movie screen" part of your eye).\n\nWell, these are just examples.  But yea, go see a doctor.  I bet insurance would cover it and you won't lose anything.  Even if you've had this problem for years, it could get worse.  You never know.\n\n(Just if anyone was curious: I did have crossed eyes, but I had surgery to correct it cosmetically.  However, crossed eyes are not caused by the eye muscles being defective but by a lack of control of them.  It is more of a palsy because eye training can't completely "fix" the problem.  Cutting the muscle to weaken them does mask the "jerky" control, thereby giving cosmetically straight eyes.)
904924
I see the exact same thing.  And I thought it was only me that saw these !  You can see them outside in bright daylight if you look up at a bright sky for long enough.  They look like myriads of little white flashes moving around in all directions.  I don't think they are caused by an electrical overload in your retinas or optical nerves because I can also see them at normal light levels and even in a completely dark room.  If you stare at one spot for long enough (about 5 to 10 seconds) they will start to appear.   It even works when staring at a white computer screen (it doesn't have to be particularly bright), or even a blank sheet of paper !\n\nI have to say I don't see them unless I look for them, but when I do they are always there.  And, contrary to previous answers, they don't go away after a time, in fact they get stronger if anything.  If I don't blink and stay staring at the same spot for 1 to 2 minutes, eventually my entire field of vision is covered with these lights - they are all I can see until I move my eyes at which point they disappear completely !\n\nThey remind me of the 'static' noise that you see on a TV set that isn't tuned to any station, so they could be due to electrical noise in your optic nerves, or even in the brain itself.  I'm glad it's not only me that sees them, I thought I was starting to lose my eyesight !\n\nIncidentally, there is another phenomena that is similar to this, when you stare at a bright light in a dark room.  This effect looks like a myriad of bright streaks emanating out in straight lines in all directions away from the light source.  More like a halo than worms or static noise.  I think this is definitely something to do with the way your eye functions, but I have never seen any explanation for it.  Has anyone else experienced this ?
931172
Because we are really close to our star, the sun.  The light from it drowns out the other lights from stars.  The same way a very small light in a room is drowned out by turning on a much larger one.  At night, we are completely turned away from it, so we can now see other lower light sources.
66691
I believe the actual terminology for this is called "persistance of vision"\n\nIn loose terms, it's very much like when you stare at the black dot on the green apple for 15 seconds, then close your eyes, then with your eyes closed you see a white spot and a red apple.\n\nsee : http://en.wikipedia.org/wiki/Persistence_of_vision
963666
because it gets dark at night on this planet
780823
Could be a strange mirage. Sometimes weird mirage can project skyline of cities beyond horizon or just strange shapes in sky when atmosphere refract lights in unusual ways.
392074
light reflecting off dust particles will produce an orb or snow like effect especially if a flash is used.  If a picture is taken during the dark then the main object will appear because the lens will stay open longer but light or reflecting light even if very dim will appear as a bright light stream but the light particles will all travel in the same path or direction and the movement of the camera will make it look like they are doing loops.
559526
Most of the time, those are brief after-images; it's a reflection of the processing of images by the retina.\n\nOn occasion, it can reflect retinal pathology--retinal detachment, occlusion of a blood vessel, etc--and it can be the prodrome of a migraine.\n\nIf it only occurs briefly and with closed eyes, it is generally nothing; the disease states usually will cause the little dots whether your eyes are open or closed.
1096572
I used to get this a lot when I used to regularly stay awake for 70+ hours in a stretch (I had problems and didn't sleep much).  Basically the way that the eyes work involves two main pigments (often called visual yellow and visual purple) which are photosensative (like camera film) and they constantly renew themselves, if you have not slept enough sometimes the production of these visual pigments slows down a bit leading to shapes and specks in th peripheral vision.  \nHave a great day and get more sleep!
1080113
The white is the color that is reflected to our eyes when it reflects off a pack of snow.  As snow accumulates there are millions of surfaces that this light can reflect from.  You can not see through the snow even though it is frozen water because of this.  \n\nIf you look through a microscope at one snow flake it is pretty transparent but not completely.  That is because the amount of reflective surfaces are only a few and going in only a few directions.