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Originally Posted by kerozene
Don't TV tubes have a protective glass laminated/glued on top of the tube's glass?
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They used to, but no one has done this for 30 years.
Some modern TVs and monitors have a plastic anti glare film glued to the screen. Sony is particularly fond of this. It can be removed, but will leave the screen lacking any tint, or anti glare. I see a lot of these with scratches because plastic is much easier to scratch than glass.
The risk is minimal or nonexistent. CRT screen glass is not only very thick, it's very tough glass. You can't cut this type of glass as easily as ordinary window glass. Also, since the air pressure is pushing in on the screen, any scratches on the outside are on the wrong side for glass cutting.
I've seen lots an lots of TVs with scratched screens, but I've never seen one with an imploded screen (other than when someone was obviously bashing it with a hammer). Even when bare CRTs are thrown in a dumpster, the screen almost always survives without a crack.