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I've seen a couple of monochrome sets with cataracts they seem less common with the vulnerable bonded safety glass tubes though. Some of them had wrap-around safety glass that you can't get wire or clothes pins into...I have a hard time imagining a practical method of removal for the average hobbiest.
Zenith cataracts are the better to have IMO... they tend to stay clear and only affect the color (act as a green filter) vs the RCA type that tends to become cloudy and difficult to discern image through. Also you can slice through a Zenith cataract cold with wire VS RCAs that require dangerous heat or prying...I've heard of using water to remove cataracts on RCA CRTs but after 3 months of no noticeable progress I gave up on using that technique.
The most ruined cataracts I've seen were from a damp basement in Indiana... some the glass literally fell off when the tube was lifted... water degrades PVA just not as fast as I would like.
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