[Study of zonular area (author's transl)].

The author presents a set of colored pictures which permits to delimitate 3 kinds of zonular fibers. 1. Short anterior fibers. 2. Short posterior or medial fibers, and 3. long posterior fibers. Describe also 3 irregular rings where the zonular fibers are firmly attached to the hyaloids and vitreous. 1. The Wieger's or Egger's ring. 2. The ciliary ring, and 3. the ora serrata ring. The first one attached to the posterior capsula, the second to the ciliary processes and ciliary body and the third to the peaks of the ora serrata. They are the 3 anterior support of the vitreous body. The 2nd is movile by the action of the circular ciliary muscle which acts like a diaphragm suspended from the flexible spur. When contracts relax the zonular fibers but pull the spur and trabeculum and would move the dense basal vitreous to the center pressing the fluid central vitreous.