The<unk>  (British spelling) or<unk>  (U.S. spelling) is the clear gel that fills the space between the lens and the retina of the eyeball of humans and other vertebrates. It is often referred to as the<unk>  body or simply "the<unk> ".
Vitreous humour
Aqueous humour
Fundal height
Intracranial pressure
Intraocular pressure
Refractive index
Intraocular lens
Eye circles