Well, according to your description, I have to tell you that what you have got is floaters. So you do not need to worry about it. And generally speaking, floaters are little "cobwebs" or specks that float about in the field of vision. And as we know that, they are small, dark, shadowy shapes that can look like spots, or squiggly lines. And in common, eye floaters can be harmless. And that is why people will not be aware of them. For the causes, floaters occur when the vitreous, a gel-like substance that fills about 80 percent of the eye and helps it maintain a round shape, slowly shrinks. For your situation, if you feel uncomfortable, I will suggest you go and see the eye doctor, and he can just give some advices.
