Good deal, it sounds like you're doing an awesome job with them, and I appreciate you taking them in and giving them a loving home. it's amazing how many people get horrible advice about how to take care of bearded dragons from the pet shops they buy them from, and also from breeders! That's most likely what happened to their prior owner, they were told to go ahead and buy 2 dragons and keep them together, use the crappy lights, etc. It happens every single day, and it's just sad.
I agree, just turn off the current
UVB light since you have the Reptisuns on their way, this should help their eyes out, and they can go a few days without any UVB, in reality they aren't getting any adequate UVB anyway right now, so just flip them off and keep them off until the new UVb tubes arrive.
Keep us posted, they should be just fine once they get under some good
UVB light and get the inadequate UVb out of their eyes.