A contact lens excellent in optical property, offering favorable feeling
during the use thereof, and capable of continuous uses, which is composed
of a hard portion in the central part and a soft portion in the periphery
of the central part is provided. The contact lens comprising two kinds of
polymers and having a hard portion arranged in the central part thereof
and a soft portion arranged in the periphery of the central part, wherein
a monomer mixture forming the hard portion contains at least one
silicone-containing monomer, and the monomer mixture forming the hard
portion and a monomer mixture forming the soft portion each contain at
least one common hydrophilic monomer.