I was thinking of using an occular drone for my new burned out mage build (i love those )
Now the question would be: can i cast spells through that drone as the bbb states one can cast magic through vision enhancement which is paid for with essence.
What do you think?

You can cast through the drone while it serves as an eye. Once you take the drone out, you can no longer cast through it.

Nope. It acts as a standard drone as soon as you detach it from your person.

aww what a pity

thanks for the quick replies tho

Buy a tail and install a cybereye on the tip.

Or if your game isn't Pink Mohawk enough to pull that off, install one in the palm of your hand.