I tried the latter (washing) bu the haze is still there...I think it may be some sort of oxidation on the glass .. I used a the end of a wooden spoon to see if it would scrape away and it did...next, got an old toothbrush melted the end and bent it 90 degrees, and went to town with some. CIF. Came up like new! I cant see how the lenses can be replace they look as if they are bonded in with something?