Weird things we see in our eyes?

Question

Okay, I read somewhere that the bunches of circles we see falling are calcium deposits. Is this true?

And what are the black and white things we see, that kind of reminds us of a broken television with white noise?

And what are all the weird colors we see when we close our eyes? Are these things because light leaves impressions in our eyes, and they stay there until our eyes adjust?

And how come when you poke the side of your eye, you see the effect on the opposite side? And what are stars?

Answer 1

The 'stars' are photophosphenes.

Answer 2

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