At the moment till I have my eye op (Now 29th Jan) I have been using some special needles, the are called self threading needles. They have a hook type eye at the top of the needle where you place your thread and then pull your thread. The thread then slides through a non return piece inside the needle and voila its threaded.
It has truly stopped me going mad. they are very good and come in all different sizes. If you would like more info let me know.
Elle