Disclosed are masks (34) configured to be implanted in a cornea of a patient.In one embodiment, the body of the mask has a light transmitting portion (38), a light blocking portion disposed about the light transmitting portion, andan outer periphery surrounding the light blocking portion (36) . The mask isadapted to reside between two intracorneal layers of a cornea. In a preferredembodiment, the mask is formed from a material comprising a highly fluorinatedpolymeric material and an opacification agent and is resistant to degradationupon exposure to ultraviolet light. In another embodiment, the mask is formedfrom a material which comprises a polyanionic compound. In some embodiments,the mask includes one or more wound healing modulator compounds to aid inproper healing following implantation.
