A one-piece intraocular lens realizing adhesion of the intraocular lens to the inner surface of a capsule more advantageously by viscosity imparted to the intraocular lens, and being deployed more positively after it is inserted into the capsule and secured therein while being positioned at a specified location. The intraocular lens has an optical portion (12) and supporting portions (16, 16) that are formed integrally with a foldable or rollable soft material exhibiting viscosity. The supporting portions (16, 16) have rough surface portions (38, 38) with reduced viscosity at least at portions that are adapted to be superposed on the optical portion (12) when the lens is folded or rolled and inserted in to the eye and the supporting portions (16, 16) have a reduced transparency by means of the rough surface portions (38, 38) in comparison with the optical portion (12).
