| abstract |
This invention relates to an ophthalmic lens having ophthalmologically compatible interior and exterior surfaces, said lens being suitable to be worn for prolonged periods in continuous contact with ocular tissues and ocular fluids, characterized in that said lens comprises a polymeric material that it has high oxygen permeability and high ion permeability, said polymeric material being formed from polymerizable materials comprising: (a) at least one oxy-permeable polymerizable material; and (b) at least one polymerizable permeable ion material, said lens allowing oxygen permeation to a sufficient degree to maintain the health of the cornea and the comfort of the user during a period of continuous prolonged contact with the eye tissues and the eye fluids and allowing said lens, the permeation of ions or water in an amount sufficient to allow the lens to move over the eye in such a way that the health of the cornea does not suffer a substantial detriment, and in such a way that the comfort for the user is acceptable during a period of contact, prolonged and continuous with the eye tissues and eye fluids. |