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.