Optical vs Undefined - What's the difference?

As adjectives the difference between optical and undefined

is that optical is of, or relating to sight; visual while undefined is lacking a definition or value.

(en adjective)

Of, or relating to sight; visual

Strabismus is an optical defect.

(rfex)

Designed to assist or enhance sight

A microscope is an optical instrument.

Of, or relating to optics

Refraction is an optical effect.

Of, or relating to visible light

Optical telescopes don't work when it is cloudy.

Incorporating light-sensitive devices

An optical switch opens the door automatically.

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(wikipedia undefined) (-)

Lacking a definition or value.

(mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.

The result of division by zero is undefined .

* defined