It'll probably only expand to the UV side of things, the lens doesn't really filter out IR at all and you can see some of it already without any changes to your eyes. But your eye isn't very sensitive to it, so you have to block out all other light to be able to see anything.
Infrared is everything to the right of 700 on the x-axis, and ultraviolet is left of 400. Our lens already lets through about the same proportion of infrared as most of the rest of visible light. Presumably that means that our retina is just insensitive to it.
