1. (a.) Of or pertaining to vision or sight.

2. (a.) of or pertaining to the eye; ocular; as, the optic nerves (the first pair of cranial nerves) which are distributed to the retina. See Eye.

3. (a.) Relating to the science of optics; as, optical works.

achromatic lens astigmatic lens burning glass camera coated lens concave lens concavo-convex lens condenser convex lens eye eyeball eyeglass eyepiece glass hand lens lamp lens magnifier magnifying glass meniscus object glass objective objective prism oculus ogle ophthalmic optic optical orb peeper prism reader reading glass seeable seeing telephoto lens toric lens varifocal lens viewable visible visional visual winker zoom lens