It sounds like a floater. Harmless, annoying and you can't do anything
about it. After a while your vision adapts and you don't notice it. Best
to see your eye care professional if you have any concerns at all.

Take a look here:
http://www.allaboutvision.com/conditions/spotsfloats.htm

ionm,

The following texts may be of aid -

"CHAPTER XXIII - FLOATING SPECKS: THEIR CAUSE AND CURE

A VERY common phenomenon of imperfect sight is the one known to
medical science as muscae volitantes or flying flies. These floating
specks are usually dark or black, but sometimes appear like white
bubbles, and in rare cases may assume all the colors of the rainbow.
They move somewhat rapidly, usually in curving lines, before the eyes,
and always appear to be just beyond the point of fixation. If one
tries to look at them directly, they seem to move a little farther
away. Hence their name of "flying flies."

The literature of the subject is full of speculations as to the origin
of these appearances. Some have attributed them to the presence of
floating specks - dead cells, or the debris of cells - in the vitreous
humor, the transparent substance that fills four-fifths of the eyeball
behind the crystalline lens. Similar specks on the surface of the
cornea have also been held responsible for them. It has even been
surmised that they might be caused by the passage of tears over the
cornea. They are so common in myopia that they have been supposed to
be one of the symptoms of this condition, although they occur also
with other errors of refraction, as well as in eyes otherwise normal.
They have been attributed to disturbances of the circulation, the
digestion and the kidneys, and because so many insane people have
them, have been thought to be an evidence of incipient insanity. The
patent-medicine business has thrived upon them, and it would be
difficult to estimate the amount of mental torture they have caused,
as the following cases illustrate.

A clergyman who was much annoyed by the continual appearance of
floating specks before his eyes was told by his eye specialist that
they were a symptom of kidney disease, and that in many cases of
kidney trouble disease of the retina might be an early symptom. So at
regular intervals he went to the specialist to have his eyes examined,
and when at length the latter died, he looked around immediately for
some one else to make the periodical examination. His family physician
directed him to me. I was by no means so well known as his previous
ophthalmological adviser, but it happened that I had taught the family
physician how to use the ophthalmoscope after others had failed to do
so. He thought, therefore, that I must know a lot about the use of the
instrument, and what the clergyman particularly wanted was some one
capable of making a thorough examination of the interior of his eyes
and detecting at once any signs of kidney disease that might make
their appearance. So he came to me, and at least four times a year for
ten years he continued to come.

Each time I made a very careful examination of his eyes, taking as
much time over it as possible, so that he would believe that it was
careful; and each time he went away happy because I could find nothing
wrong. Once when I was out of town he got a cinder in his eye, and
went to another oculist to get it out. When I came back late at night
I found him sitting on my door step, on the chance that I might
return. His story was a pitiable one. The strange doctor had examined
his eyes with the ophthalmoscope, and had suggested the possibility of
glaucoma, describing the disease as a very treacherous one which might
cause him to go suddenly blind and would be agonizingly painful. He
emphasized what the patient had previously been told about the danger
of kidney disease, suggested that the liver and heart might also be
involved, and advised him to have all of these organs carefully
examined. I made another examination of his eyes in general and their
tension in particular; I had him feel his eyeballs and compare them
with my own, so that he might see for himself that they were not
becoming hard as a stone; and finally I succeeded in reassuring him. I
have no doubt, however, that he went at once to his family physician
for an examination of his internal organs.

A man returning from Europe was looking at some white clouds one day
when floating specks appeared before his eyes. He consulted the ship's
doctor, who told him that the symptom was very serious, and might be
the forerunner of blindness. It might also indicate incipient
insanity, as well as other nervous or organic diseases. He advised him
to consult his family physician and an eye specialist as soon as he
landed, which he did. This was twenty-five years ago, but I shall
never forget the terrible state of nervousness and terror into which
the patient had worked himself by the time he came to me. It was even
worse than that of the clergyman, who was always ready to admit that
his fears were unreasonable. I examined his eyes very carefully, and
found them absolutely normal. The vision was perfect both for the
near-
point and the distance. The color perception, the fields and the
tension were normal; and under a strong magnifying glass I could find
no opacities in the vitreous. In short, there were absolutely no
symptoms of any disease. I told the patient there was nothing wrong
with his eyes, and I also showed him an advertisement of a quack
medicine in a newspaper which gave a great deal of space to describing
the dreadful things likely to follow the appearance of floating specks
before the eyes, unless you began betimes to take the medicine in
question at one dollar a bottle. I pointed out that the advertisement,
which was appearing in all the big newspapers of the city every day,
and probably in other cities, must have cost a lot of money, and must,
therefore, be bringing in a lot of money. Evidently there must be a
great many people suffering from this symptom, and if it were as
serious as was generally believed, there would be a great many more
blind and insane people in the community than there were. The patient
went away somewhat comforted, but at eleven o'clock - his first visit
had been at nine - he was back again. He still saw the floating
specks, and was still worried about them. I examined his eyes again as
carefully as before, and again was able to assure him that there was
nothing wrong with them. In the afternoon I was not in my office, but
I was told that he was there at three and at five. At seven he came
again, bringing with him his family physician, an old friend of mine.
I said to the latter:

"Please make this patient stay at home. I have to charge him for his
visits, because he is taking up so much of my time; but it is a shame
to take his money when there is nothing wrong with him."

What my friend said to him I don't know, but he did not come back
again.

I did not know as much about muscae volitantes then as I know now, or
I might have saved both of these patients a great deal of uneasiness.
I could tell them that their eyes were normal, but I did not know how
to relieve them of the symptom, which is simply an illusion resulting
from mental strain. The specks are associated to a considerable extent
with markedly imperfect eyesight, because persons whose eyesight is
imperfect always strain to see; but persons whose eyesight is
ordinarily normal may see them at times, because no eye has normal
sight all the time. Most people can see muscae volitantes when they
look at the sun, or any uniformly bright surface, like a sheet of
white paper upon which the sun is shining. This is because most people
strain when they look at surfaces of this kind. The specks are never
seen, in short, except when the eyes and mind are under a strain, and
they always disappear when the strain is relieved. If one can remember
a small letter on the Snellen test card by central fixation, the
specks will immediately disappear, or cease to move; but if one tries
to remember two or more letters equally well at one time, they will
reappear and move.

Usually the strain that causes muscae volitantes is very easily
relieved. A school teacher who had been annoyed by these appearances
for years came to me because the condition had grown recently much
worse. I was able in half an hour to improve her sight, which had been
slightly myopic, to normal, whereupon the specks disappeared. Next day
they came back, but another visit to the office brought relief. After
that the patient was able to carry out the treatment at home, and had
no more trouble.

A physician who suffered constantly from headaches and muscae
volitantes was able to read only 20/70 when he looked at the Snellen
test card, while the retinoscope showed mixed astigmatism and he saw
the specks.

When he looked at a blank wall, or a blank white card, the retinoscope
still showed mixed astigmatism and he still saw the specks. When,
however, he remembered a black spot as well as he could see it, when
looking at these surfaces. there were no specks, and the retinoscope
indicated no error of refraction. In a few days he obtained complete
relief from the astigmatism, the muscae volitantes, and the headaches,
as well as from chronic conjunctivitis. His eyes, which had been
partly closed, opened wide, and the sclera became white and clear. He
became able to read in moving trains with no inconvenience, and - what
impressed him more than anything else - he also became able to sit up
all night with patients without having any trouble with his eyes next
day."

- The Cure of Imperfect Sight by Treatment Without Glasses

"Floaters

These are dark spots, tadpoles, and so on, which trouble many myopic
and middle-aged people. They tend to come and go, and are most
noticeable when reading or when the eyes are directed at some other
bright surface, such as a blank white wall or the sky. In some case
the floaters appear to be stationary; in others, they move with the
tracking and searching movements of the eye, yet retain a certain
momentum of their own when these movements cease.

Floaters are attributed to a fault in the vitreous humour. The
vitreous humour is the fluid filling the vitreous body, and is similar
to the aqueous humour, except that it has in addition a component of
very fine fibrils. The fibrils give the vitreous humour a jelly like
consistency. In good health the jelly is firm, but in myopia or ini
later life it becomes more fluid. When this happens the fibrils can
coagulate to some extent, and the shadows cast by the coagulations are
perceived as floaters.

There may be other imperfections in the vitreous humour, not due to a
deterioration of the jelly, which will also produce floaters, but
these, while permanent, are usually transparent or nearly so and are
much less annoying than the other kind."

- Improve Your Eyesight - A Guide to the Bates Method for Better
Eyesight without glasses - Jonathon Barnes

Additional aid: A certain technique used by myself to cure floating
specks has been named 'sunning'. One directs his eyes towards the sun
with the eyes closed, gently swinging his head from side to side, that
the light may fall on all parts of the retina. It may be observed that
there exists an oppositional movement from the light to your eyes.
Notice this movement. Many of my patients have been cured successfully
by this means alone. *Never stare at the sun with the naked eye.*

Kind regards,

- W.H. B

It's a floater and it's in the eyeball. It's usually harmless.

On Jul 4, 3:34 pm, ionm...@ionmail.com wrote:

How do you know that?  If it's a floater (as everybody here suggests)
then it IS inside the eyeball, however the image you see appears to be
in front of you, within your field of vision.

Question:  When you look in the mirror, do you actually see it sitting
on the eyeball?  If so, then it's not a floater.  But I suspect that
it is not on the surface of the eyeball and you merely assume it's
there.

This is typical to a floater.

IF it's a floater, then it's usually harmless (as others advised
here), but if you experience a sudden increase in the number of
floaters it may be an indication of a serious problem (e.g. retinal
detachment) and you should see an ophthalmologist.   You should be
aware that floaters have different shapes, sizes and colors, and they
all "float" with your eye movements.