[The histological structure of peripheral cystoid degeneration in senile retinoschisis (author's transl)]

In peripheral cystoid degenerations as the precursor of senile retinoschisis basement membrane material and collagen fibrils are formed; after retinal splitting this newly formed material together with ruptured tissue columns build up a layer on the inner surface of the outer wall of the retinoschisis which tends to shrinkage. This mechanism leads to hole formation in the outer wall; the holes consequently enlarge by a curling inward of the edge of the defect.