Which term means 'pertaining to the eye'?

The term "ocular" specifically refers to anything related to the eye. It comes from the Latin word "oculus," which means "eye." This term encompasses various aspects of eye health, anatomy, and function, making it the most precise choice when describing conditions or phenomena related to the eye.

In contrast, "ciliary" pertains to the ciliary body or muscles of the eye, "optic" refers to vision or the eye's ability to see, and "visual" relates to the act of seeing or to sight in general. While each of these terms is interconnected with eye function and anatomy, they do not capture the broader and more general aspect of being pertaining to the eye itself like "ocular" does.