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Oxygen permeability (DK) of Menicon Z achieved beyond the value of all other GP lenses.

Oxygen transmissibility, Dk/L or Dk/t, represents how much oxygen passes through a lens of a given thickness. Thus, the high Dk value of the material of Menicon Z lenses combined with the oxygen transmissibility.
Menicon Z is the first material to be classified in the "hyper-oxygen transmissibility" category by a leading expert in the field of oxygen permeability research.

The Dk value of Menicon Z achieves , which values show providing enough oxygen to maintain healthy cornea. The advanced Menicon Z material establishes not only the hyper-oxygen transmissibility but also the lens strength with thin design.
Its unique combination of design and material technology ensures that Menicon Z will provide clear crisp vision and safeguard the health of your eyes during long term wear.

Benjamin W J.EOP and Dk/L: the quest for hyper transmissibility. Jpurnal of the American Optometric Association.