"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 inspection"
"an optical illusion"
"visual powers"
"visual navigation"

"be sure of it; give me the ocular proof"
"a visual presentation"
"a visual image"