by Joel Harrison
23. November 2011 08:21
The manufacturer of innovative, silicone hydrogel polymer contact lenses materials, Contamac Ltd., has announced that the United States Patent and Trademark Office issued a patent protecting its products, particularly the company’s popular contact lens material, Definitive.
The patent covers a wide variety of elements related to the materials, such as formulation design, polymer composition, contact lens manufacturing (including the provision of an indication for finished contact lenses obtained in the process of production).
Contamac stated that the Definitive, contact lens material was created to be used for specialty contact lenses because of its high water content and low modulus leading to improved patient comfort all day long.
So far, as many as 800,000 units of the material have been sold around the world, which means that thousands of patients wear contact lenses made of Definitive. In the US, it is available through such laboratories specialising in contact lenses as Metro Optics, Unilens, Art Optical and X-Cel/Walman.
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