There are times when you'll see your eye capillaries, but it's a lot more common to see threads in your vitreous humour and I wonder if it is these that you're experiencing? I'm no expert and it took years of wild guesses before I finally established what my vitreous floaters actually are. They appear as pale jointed threads that drift around in one's vision especially in bright light or when using magnifying lenses e.g. microscope, telescope. These threads - so I was told - are minute amounts of blood from old bleeds.

Myopia goes hand-in-hand with mis-shapen eyeballs, and the result is often that the vitreous humour becomes detached from the retina. The detached part might then become a weiss ring - I've got "the biggest one" that my optician had ever seen! This appears as a murky blob in my line of vision. Very irritating, but it's unusual for it to last long or to be particularly disabling.