English word oculo- comes from Proto-Indo-European *h₃ekʷ-, and later Proto-Italic *okʷelos (Eye.)

Detailed word origin of oculo-

Dictionary entry	Language	Definition
*h₃ekʷ-	Proto-Indo-European (ine-pro)	eye, eye, to see, to see, eye; to see
*h₃okʷih₁	Proto-Indo-European (ine-pro)
*okelos	Proto-Italic (itc-pro)
*okʷelos	Proto-Italic (itc-pro)	Eye.
oculum	Latin (lat)
oculo-	English (eng)	Eye.

Words with the same origin as oculo-