After looking at the pictures you sent, he said it appears that the objective lenses - the ones farthest from the eyes - each consist of two lenses that were cemented together but are delaminating. “Binoculars can develop insidious problems just while sitting on a shelf,” Cohen said. Plus, the basic cleaning you want could easily turn into a costly repair. New opera glasses cost as little as $20, and there’s no way you could even begin to get a professional cleaning for that price.Ī reader’s antique opera glasses. What would you recommend?Īnswer: You might be better off keeping your great-great-grandmother’s opera glasses as is and buying new ones to enjoy performances, suggests Martin Cohen, owner of Company Seven, a firm in Laurel, Md., that does optical repairs for everyone from amateur astronomers to NASA. If it is too expensive and I end up cleaning them myself, I don’t know whether plain water would get them clean enough and whether a vinegar or ammonia solution might damage the finish if a little dripped on the area around the glass. I am afraid to unscrew them and wonder where I can get them cleaned. The glasses need to be taken apart so the lenses can be cleaned. They were given to her by her husband around 1875-1885. Question: I have a pair of my great-great-grandmother’s opera glasses.
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