I have a suggestion that you might find interesting: have you tried applying what you've developed through your closed eye meditations to open eye meditation?

Using something like a small, smooth stone as the object of focus (you could use anything, but I think the less light it reflects/emits, the easier it is) and just doing you're regular meditation, but with your eyes open, and putting your attention on that object in that moment; completely immersing yourself in the moment, free from the usual thoughts/perspectives our brains provide us with about our environment.

You might like it