part of develops from start stage end stage eye portion of organism substance vitreous zonule zebrafish_anatomy zonules Ceri ZFA:0005573 2010-12-02T06:08:45Z Modified or toughened vitreous that suspend the lens at the equator to the non-pigmented epithelium of the ciliary zone. In zebrafish, dorsal zonules are thickened as compared to ventral zonules. In both dorsal and ventral regions, these fibers delimit the vitreous body aqueous humor boundary. unknown adult