"occular" is probably misspelled. Trying ocular instead Definition of ocular
ocular has definitions from the fields of physics,optics,ophthalmology
1
[ adjective ] (ophthalmology) of or relating to or resembling the eye

Examples

"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"

2
[ adjective ] able to be seen

Synonyms

visual

Examples

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

3
[ adjective ] relating to or using sight

Synonyms

visual optical optic

Examples

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

4
[ noun ] (physics,optics) combination of lenses at the viewing end of optical instruments

Synonyms

eyepiece

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