Provided are ophthalmic devices comprised of a reaction product of a composition comprising: (i) a crosslinked substrate network containing covalently bound activatable free radical initiators; and (ii) a grafting composition containing one or more ethylenically unsaturated compounds. Also provided are processes for making ophthalmic devices.所提供的是眼用裝置,其包含組成物之反應產物,該組成物包含:(i)含有共價鍵結可活化自由基起始劑之交聯基材網狀物;及(ii)含有一或多種乙烯系不飽和化合物之接枝組成物。亦提供的是用於製造眼用裝置之方法。