My question is regarding the biological nature of the separation between the vitreous humour and aqueous humour of the human (or mammal) eye. What connects the two in terms of the passive transport of proteins between the two? Is there a single membrane?

Apologies, I'm far from a biologist.

EDIT: Specifically what sort of transport is arrow 9 in the figure below representing?

EDIT: Is it this? https://en.wikipedia.org/wiki/Zonule_of_Zinn

![enter image description here][1]


  [1]: https://i.sstatic.net/T7diT.png