formulation as is customary for purposes of calculating component amounts the initiator weight is not included in the formulation weight calculation the particular combination of the ingredients described above and the identity and amount of any additional components are determined by the desired properties of the finished device material in a preferred embodiment the device materials of the present invention are used to make iols having an optic diameter of 5 5 or 6 mm that are designed to be compressed or stretched and inserted through surgical incision sizes of 2 mm or less for example the copolymer 3 is combined with a mono functional acrylate or methacrylate monomer 1 a multifunctional acrylate or methacrylate cross linker 2 a reactive uv absorber and a reactive colorant and copolymerized using a radical initiator in a suitable lens mold the device material preferably has a refractive index in the hydrated state of at least about 1 50 and more preferably at least about 1 53 as measured by an abbe 39 refractometer at 589 nm na light source and 25 u00b0 c optics made from materials having a refractive index lower than 1 50 are necessarily thicker than optics of the same power which are made from materials having a higher refractive index as such iol optics made from materials with comparable mechanical properties and a refractive index lower than about 1 50 generally require relatively larger incisions for iol implantation.