It sounds to me like you are trying to go to a first draft of your piece before you are ready. Perhaps you should spend some time capturing the thoughts from "when your eyes are closed" in a notebook, just jotting down scraps of ideas and feelings and so on. Then, with your eyes "open", start outlining a story from the raw material you have daydreamed. Only once you have an outline, should you think about trying to write a first draft.
If you don't know how to turn your raw thoughts into an outline, there are many good books on this. I've just read Scarlett Thomas's Monkeys With Typewriters which is very good on plotting, but I'm sure other posters will have other suggestions.