Schematic diagram of the
human eye. Vitreous membrane is not labeled but it surrounds the vitreous, the dark mauve/purple area labeled 'Vitreous Humour'.
The upper half of a sagittal section through the front of the eyeball. Vitreous membrane is not labeled but is visible.
The vitreous membrane (or hyaloid membrane or vitreous cortex) is a layer of
collagen separating the
vitreous humour from the rest of the
eye. At least two parts have been identified anatomically. The posterior hyaloid membrane separates the rear of the vitreous from the
retina. It is a false anatomical membrane.[1] The anterior hyaloid membrane separates the front of the vitreous from the
lens.[2] Bernal et al. describe it "as a delicate structure in the form of a thin layer that runs from the
pars plana to the posterior lens, where it shares its attachment with the
posterior zonule via
Weigert's ligament, also known as
Egger's line".