<p>A contact lens which is composed of two types of polymer and has a hard portion arranged in the central part thereof and a soft portion arranged in the edge of the central part, wherein the monomer mixture for forming said hard portion comprises at least one silicone-containing monomer, and the monomer mixture for forming said hard portion and the monomer mixture for forming said soft portion contain at least one common hydrophilic monomer. The above contact lens is excellent in optical properties, offers good feeling during the use thereof, and can be continuously used for a long period of time.</p>
