e/Oxygen permeability

Information
has gloss	eng: Oxygen permeability (OP) is a parameter of a contact lens. OP expresses the ability of the lens to let oxygen reach the eye by diffusion. Another parameter is the transmissibility level (abbreviated DK/t), the Dk per thickness of the lens, and is generally more used. Typical values are from 25 to 50 . In soft contact lenses, it is dependent on the thickness of the lens and the material of the lens, especially concerning the water content.
lexicalization	eng: Oxygen Permeability
instance of	(noun) a thin curved glass or plastic lens designed to fit over the cornea in order to correct vision or to deliver medication contact, contact lens