Maybe not visors as we think of them today, like the big clear plastic things that old ladies wear to go speed walking. Maybe more like something that attaches to one temple or ear and wraps around to hold a transparent or semi-transparent screen in front of one eye-eventually could be controlled via eye movements and attached via magnet, but initially would br run by finger movements, or maybe like the top part of sunglasses (think like the futuristic looking sunnies yhat Kim K is a fan of, if you are a fashion girl), but without having the frames and lenses, just a little fold down screen on one side, probably controlled via finger movements. maybe something that is worn on the wrist like in the show upload or even on the finger like a ring is a more likely intermediary step, controlled with finger movements. Eventually if we continue on the same path we are on now eventually we will move towards having some sort of device installed directly so that we are always connected, never lose our phones, can use our brains to run our devices, and, most importantly to the corporations thay sell the software to us, pay to use them on a subscription model.