opti - orbi
- optic
- optic atrophy
- optic canal
- optic chiasma
- optic cup
- optic disc
- optic disc coloboma
- optic disc drusen
- optic disc neovascularisation
- optic disc pit
- optic disc vasculitis
- optic foramen
- optic nerve
- optic nerve fibre
- optic nerve glioma
- optic nerve head
- optic nerve hypoplasia
- optic nerve pit
- optic nerve sheath decompression
- optic neuritis