This is pretty remarkable. As an adult he'll have to use some intense UV Protection glasses/contacts (maybe a transition contact) to fully be adapted to the light. He will be the best burglar/killer/prankster/thief
It would be an interesting design if you could possibly create a contact lense which would increase vision at night. Thus though trying to harness the mutations could cause serious effects and would have to be funded by some rich dude. Most of these cool things are not able to be funded ..