opti'mistical

opti'mistically

optic

optic atrophy

optic axes

optic axis

optic canal

optic capsule

optic center

optic chiasm

optic chiasma

optic chiasmata

optic cup

optic decussation

optic disc

optic disk

optic foramen

optic keratoplasty

optic lobe

optic nerve

optic neuritis

optic papilla

optic radiation

optic thalamus

optic tract

optic vesicle

optic-axis

optic-center

optic-chiasm

optic-chiasma

optic-nerve

optical

optical aberration

optical activity

optical allachesthesia

optical art

optical astronomer

optical astronomy

optical axis

optical bench

optical binary

optical brightener

optical carrier 12

optical carrier 3

optical carrier 48

optical carrier n

optical center

optical character re cognition

optical character re-cognition

optical character reader

optical character recognition

optical computer

optical condenser

optical crown

optical crown glass

optical crystallography

optical density

optical device

optical diff

optical disc

optical disk

optical double star

optical effects

optical fiber

optical fibre

optical flint

optical fusion

optical glass

optical grep

optical illusion

optical image

optical instrument

optical interferometer

optical isomer

optical isomerism

optical lens

optical mark reader

optical mark reading

optical maser

optical microscope

optical model

optical mouse

optical opacity

optical path

optical phenomenon

optical printer

optical prism

optical pumping

optical pyrometer

optical resonator

optical rotation

optical scanner

optical scanning

optical sound

optical sound recording

optical sound track

optical sound-track

optical soundtrack

optical storage

optical storage technology association