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.
In terms of anatomy, at least two components have been identified. The posterior hyaloid membrane functions as a boundary separating the posterior portion of the vitreous from the retina. This membrane may be considered a functional aspect of anatomy, even though it is not a real anatomical structure.