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To the Editor.
—Recently, while I was attempting to place a new lens in an Italian spectacle frame, over an infrared lamp, this frame exploded with great intensity and burned exactly as if you had poured gasoline on it. Since this time I have run tests on imported frames from Germany, Italy, Mexico, and France and have found that the majority of these frames are made with a nitrate plastic which is highly inflammable. This is a potentially dangerous situation for people who wear glasses and particularly those who smoke. A misplaced lighter or cigarette flame could instantly set the frame on fire.Further investigation has shown that making frames from nitrate plastic was discontinued in this country over ten years ago, and the manufacturers of this type of frame discontinued making them for the reason that it was potentially quite dangerous. For the past ten years the only type
Jenkins BH. INFLAMMABLE SPECTACLE FRAMES. Arch Ophthalmol. 1967;77(6):847. doi:10.1001/archopht.1967.00980020849035