The present invention provides a medical device, preferably an ophthalmic
device, more preferably a contact lens, which comprises a core material
and a biocompatible LbL coating non-covalently attached to said core
material. The biocompatible LbL coating comprises at least one
charge/non-charge bilayer, wherein said charge/non-charge bilayer is
composed of, in no particular order, one layer of a charged polymeric
material and one layer of a non-charged polymeric material which is
capable of being non-covalently bond to the charged polymeric material.