In the past I've used a CFL setup for my bearded dragon when I first got him. After a couple of months his health seemed to deteriorate and his eating slowed significantly out of the blue. Growing beardies have insatiable appetites so I new something was wrong. I did some quick homework online and read of the problems that some people experienced with CFL's causing temporary blindness and if left too long, can cause permanent damage. Sure enough he was hungry but could not see his crickets. He'd make a quick lunge and miss. I switched out his lighting, hand fed him for two weeks and he's been fine since with excellent vision. CFL's may have come a long way in the past two years, but not worth the risk in my opinion after the first hand experience. In retrospect, it could have been the hood too (exo-terra). It had metal reflector plates behind the bulb areas which could have exasperated the issue. Anything causing a glare in your eye is going to hurt after a while...