Does anyone ever see a black dot  floating within their seeing range. What could it be?
494838
Tiger2say gave a good answer.  If they are floaters, then they're harmless.  The only thing I'd add is that they are created before you are born.  If you didn't notice them until now, it's because you just never thought about it.  Mention to your eye doctor on your next exam.  He (or she) will let you know if they're anything to be concerned about.
810970
I've never seen one, but my son had an interesting experience which he's loathe to talk about to this day.  He was driving out to see a friend around ll:00 at night, when he saw a very large, very bright light in the sky above an empty field.  He became so frightened he had to pull over.  After what seemed like a few seconds, he continued on his way. When he arrived at his destination he found he'd been on the road for over an hour longer than it should have taken him to drive to his friend's.  He forgot all about it until the next time, months later, when, driving by the same field, he became unexplicably filled with terror.  He shook so hard he could barely drive.  He had this same irrational fear come over him every time he passed that field, so he simply found another route.  I encouraged him to try to find out more about it, but he says it's too scary & weird & he'd rather not investigate, preferring not to know what happened.  I do believe we are not alone in this infinitely vast universe.  I only wish I could prove it!  If there are ET's, I hope they show themselves in MY lifetime.  I'd love to know the truth!
105569
Hi,\nLet me explain in terms of the compuet monitor itself. If you look closely, u'll find that the monitor is actually a collection of a very very large no.of dots. Each dot illuminates to a certain degree of brightness and depending on how bright a group of dots put togetheris, the brighter or darker would be that section of the screen. Now coming to "Raster", what happens is that there is a beam coming from behind your screen surface that is responsible to make your screen light up. This beam is pointed first at the top left corner of ur screen, then it travels to the right.. til the time it reaches the right most dot on the first row, then it comes down to the next row of dots, again at the left most dot... and goes on. Finally when it reaches the right most dot on the last row of your screen, it travels back to the top-left and continues ahead. This whole process takes place very fast.. and due to a phenomenon called 'Persistence of vision', the image on the screen appears to move smoothly rather than in dots :)\n\nThis method of scanning is called 'Raster'...  in which no matter whether the object on the screen is to be displayed moving to the left or right, top or down, the scanning always happens in a horizontal (in this case left to right) fashion.
839426
It sounds like floaters.  If it is, then you have nothing to worry about.  Usually you'll notice them if you are looking at a white board or the sky.  Some people have lots, some people have a few, and some people never notice them.\n\nIf you're interested, floaters are caused from protein clumps in the jelly ("vitreous" in fancy talk) on the inside of your eye.  As you move your eyes, they slosh around and cast a shadow on your retina, which is what you can see.  If you hold your eyes really still, you'll notice they slow down and eventually disappear.\n\nAnother thing that is a possibility are "ocular migraines."  I would recommend that you get your eyes checked by your family eye doctor just to be on the safe side.
927798
For me it is normal cos I've been seeing those dots for as long as I can remember aspecially when I close my eyes in the dark. Most time I focus on them intensively to lure myself to sleep.
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.
798143
Nope havent noticed it at all!!!! You must be seeing things.
368951
Same phenomenon happens when you look through a convex lens or at your reflection in a spoon. Something to do with the movement of light. It bends and shows stuff the other way around. Sorry, it's not my expertise. But that's basically how it happens.
571023
The eye doctors call those "floaters".  I was told that it happens as the retina ages.
964323
I have floaters. It has something to do with your retina. Should you start noticing many more just out of the blue, blurring vision, peripheral vision fading or blasts of bright light in your vision then you should get to a doctor quick b/c that could mean that your retina is detaching. Look it up in the search engine for more info.
735837
It sounds as if you may be experiencing floaters.  This is something that happens more frequently as people age.  It is actually gel or cells floating in the vitreous fluid (jelly like material within the eyeball) in your eye.  AS we age the vitrous fulid in our eyes thickens and this can lead to floaters.  You are actually seeing the shadows of the material off the retina. Floaters move with your eye as you move it because they are located within the eye itself.  Many times you can see floaters when you are looking at a light colored wall or background.  Floaters can be caused if you have experienced a blow to the head or can also be caused by a retinal detachment.  You should see an opthalmologist to rule this out.  If there is a sudden onset of the floaters it could be indicative of larger problems such as diabetic retinopathy, retinal hemmorhages or carotid artery disease.  If you are nearsighted, have had cataract or YAG surgery or experienced some inflammation or swelling within the eye, it could be a vitreous detachment.\nIt is impossible to diagnose this over the internet so you really should seek the attention of an opthalmologist for a true diagnosis of what you are experiencing.
309649
I have seen ghost twice in my life. The first time was very scary because I didn't believe my eyes, so closed them and then opened them again and he was still there. Also it was the middle of the day. Second time I woke up from a sound sleep and there was a black shape leaning over me. I tried pedaling backwards across the bed and screaming for my husband but no sound would come out. I couldn't force any sound from my mouth for the life of me and at the moment I thought it was my life at stake. Very scary, very real. My youngest child has claimed to seen different people on many occasions when no one was even there. Some say imagination some say children haven't shut down yet to that part of themselves.
854280
Your eyes were glowing because they are white, anything white will glow under black light. Your teeth were probably glowing too. I'm an eye doctor, I can assure you its nothing to worry about.
973795
YES, me and my friend were driving and all the sudden up in the sky a bright yellow light  flew across the sky, kind of like a shooting star, but then it stopped and hoverd for like a second and then shot straight down, when it seemed like it should have hit the ground there was a bright flash of light. this was almost two years ago, it sucks because you had to be there to see how weird it was, and its impossible to get people to take you seriously, so i kinda just let it go
949120
All you need is eyes and a clear sky. I saw one about an hour ago, but that was after an hour of looking. There should be more later tonight, especially after 11:00 or 12:00. Look anywhere in the sky.
1110465
Those are usually called "floaters", and they're basically bits of undissolved organic material literally "floating" in the gel part of your eye. They aren't a big deal unless they start impeding with vision, which can be a sign of a tear somewhere in your eye. If you've seen an optomitrist and they can't find any tear then it's just floaters (which unfortunately do get worse with age).
104529
I suppose you had a retinal detachment. I strongly recommend you to undergo an ophalmologist check. I would fear a fibrous tissue formation around silicone vesicles, which is a rather constant complication and of early occurrence.