optical in WordNet English dictionary

1. of or relating to or resembling the eye
   "ocular muscles"; "an ocular organ"; "ocular diseases"; "the optic (or optical) axis of the eye"; "an ocular spot is a pigmented organ or part believed to be sensitive to light"
   ocular  optic  optical  opthalmic 
   
2. relating to or using sight
   "ocular inspection"; "an optical illusion"; "visual powers"; "visual navigation"
   ocular  optic  optical  visual 
   
3. of or relating to or involving light or optics
   "optical supplies"
   optical