next time you are unable to see, try to perform reality checks to further anchor yourself inside the dream world. Do a nose pinch RC (breath through your nose while closing it with your fingers) to assure you even more that you are dreaming. As soon as this feeling really settles in you can try to pry open your eyes with your fingers or if you really believe you can do anything inside a dream just will them open. Expect them to open when you exhale your next breath.