All glasses eventually go cloudy in dishwashers, the problem is far quicker and more noticeable with lead crystal which specifically should never be washed in this way.
The cloudiness cannot be reversed: it's caused by millions of tiny cracks in the glass surface as a result of both the chemical and physical processes inside a dishwasher. Some products claim to include a "glass protect" function, but it just slows down the damage instead of stopping it. Commercial glass-washers used in bars and restaurants also cause this damage, but as the wash cycles are far quicker and the cleaning agent is specifically for glass the damage occurs more slowly. In any case, glasses don't usually last long enough in commercial use to show this damage as they usually scratch, chip, or break before it shows.
All you can do to totally avoid the damage is to wash glasses manually and to never put lead crystal in the dishwasher. If that's not an option, then you can slow the damage by washing glasses at the lowest possible temperature: you'll find that some cleaning products are better than others at low temperature and it's not always the expensive brands.
Sorry there's no fix for your cloudy glasses, but I hope that I've helped to to avoid further damage. Please take a moment to rate my reply.
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