Ursine Vision

       "type" : "mutation",
       "id" : "URSINE_EYE",
       "name" : "Ursine Vision",
       "points" : 1,
       "description" : "Your visual processing has shifted: though you can see better in the dark, you're nearsighted in the light.  Maybe glasses would help.  Activate to toggle NV-visible areas on or off.",
       "cancels" : ["ELFAEYES", "LIZ_EYE", "BIRD_EYE", "FEL_EYE", "COMPOUND_EYES", "NIGHTVISION", "NIGHTVISION2", "NIGHTVISION3", "MYOPIC"],
       "category" : ["MUTCAT_URSINE"],
       "active" : true