vitreous humor

US /ˈvɪt.ri.əs ˈhjuː.mər/
UK /ˈvɪt.ri.əs ˈhjuː.mər/
"vitreous humor" picture
1.

the transparent gelatinous tissue filling the eyeball behind the lens

:
The surgeon carefully removed a portion of the vitreous humor during the eye operation.
Floaters in your vision are often caused by small clumps within the vitreous humor.