the idea has been discussed several times... problems are:
- the game does not support vision changes by items (for the moment, not even simple stat changes by items - only by armors)
- the inventory doesn't have a slot for goggles. you could put them in one of the "shoulder" slots, but it would be a little weird
- balancing this kind of item will be difficult. (you could also think about making it so that the field of vision is narrowed, but that would involve even more code changes...)