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October 10th, 2005

Nanotech Makes Your Brown Eyes Blue

Abstract:
Chemists from Ciba Vision and Bausch & Lomb told attendees of the American Chemical Society’s recent national meeting in Washington, D.C., about the chemistry behind their companies’ colored contact lenses. The talks were part of the “Cosmetic Nanotechnology: Polymers and Colloids in Personal Care” symposium.

Nano- and microscale particles of inorganic pigments such as titanium dioxide, iron oxide, and barium sulfate are typically used to achieve the opaque color in these lenses.

Source:
American Chemical Society

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