The eye is a half sphere from Michaels. I painted the inside. The internal structure is 1-1/2" PVC with bubble wrap and masking tape wrapped roughly (on purpose) around it. I added more bubble wrap and tape to the back to build it out. Then I taped on some rope and string to hand at the sides. The eyelids are folded over vinyl, hot glued down. I made veins running all over with hot glue.
I then slapped on liquid latex (with some tan paint mixed in), applying several coats until it was thick enough and the rough edges were smoothed out. I stuck on some horse hairs I plucked from my Weequay mask and glued them down with more latex. Once dry I painted on and wiped off brown paint, so that it would only stay in the deep areas. I added some puke green-gray to a few spots and some black in really deep areas like under the stringy parts. Took me about three evenings to make!
Scott