I'm not sure of a UV LED's expected lifespan, but it is significantly shorter than other LEDs. And ARC's warranty on the UV is 1 year as opposed to the 10 years with their other lights.
My mistake, Peter. I hadn't seen notice of the upgraded LED & warranty before. I guess it IS true that staring into UV will affect eyesight. /ubbthreads/images/graemlins/ooo.gif