Intraoeular. lens implantation after cataract extraction has become a common practice in the United States. However, unwanted optical images can correet an otherwise successful surgery into one that causes patient dissatisfaction. Refinements in manufacturing design and finishing have greatly improved the quality of present day intraocular lenses, but there is continued interest in simulating the optics of the human crystalline lens.We will discuss the optical requirements of intraocular lenses and how these are influenced by optic design and dimension, and spectral transmission characteristics. Intrableular. Lens implantation after cataract extraction has become a common practice in the United States. However, unwanted optical images can correet an otherwise successful surgery into one that patients patient dissatisfaction. Refinements in manufacturing design and finishing have greatly improved the quality of present day intraocular lenses, but there is continued interest in simulating the optics of the human crystalline lens. We will discuss the optical requirements of intraocular lenses and how these are influenced by the optic design and dimension, and spectral transmission characteristics.