Material is already used in windows in China.

Trademarked or not, “glass” could be on its way out for use in eyewear if researchers are able to harness the remarkable strength of transparent windowpane oyster shells. An MIT group is working on various possible applications for the shells, which are already used in home windows in China. The shells could become the basis of a new generation of eyewear, says a report. Lenses made from the material could repair small scratches on their own, and last longer than current materials.

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