optic chiasma
— Noun
– English
~ the crossing of the optic nerves from the two eyes at the base of the brain
optic disc
— Noun
– English
~ the point where the optic nerve enters the retina; not sensitive to light
optic chiasm
— Noun
– English
~ the crossing of the optic nerves from the two eyes at the base of the brain
optic axis
— Noun
– English
~ in a doubly refracting crystal, the line in the direction of which no double refraction occurs; "a crystal may have either one or two optic axes"