The Online POV-Ray Tutorial

#declare Eyeball = sphere {
   <0, 0, 0>, 1
   texture {
      pigment {
         granite
         color_map {
            [0.0 color LightBlue]
            [0.5 color SteelBlue]
            [1.0 color LightBlue]
         }
         scale 1/3
         turbulence 0.2
         rotate <90, 0, 0>
      }
   }
   texture {
      pigment {
         wood
         color_map {
            [0.0 color Black]
            [0.225 color Black]
            [0.225 color Clear]
            [0.45  color Clear]
            [0.45  color White]
            [1.0 color White]
         }
         scale 2
      }
   }
}

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