Disclosed are masks configured to be implanted in a cornea of a patient. In one embodiment, the body of the mask has a light transmitting portion, a light blocking portion disposed about the light transmitting portion, and an outer periphery surrounding the light blocking portion. The mask is adapted to reside between two intracorneal layers of a cornea. In a preferred embodiment, the mask is formed from a material comprising a highly fluorinated polymeric material and an opacification agent and is resistant to degradation upon exposure to ultraviolet light. In another embodiment, the mask is formed from a material which comprises a polyanionic compound. In some embodiments, the mask includes one or more wound healing modulator compounds to aid in proper healing following implantation.
