Fig. 35. Scanning electron micrographs of zonules from comparable posterior equatorial regions of human lenses. A. The normal lens displays numerous well-organized zonules composed of parallel fibrils (arrows). B. A lens from a patient with Marfan syndrome shows irregular and malformed zonular fibers. In this case the fibrillar composition of the capsule is also altered and irregular. The scale marker in each case represents 1 μm. (Farnsworth PN, Burke P, Dotto ME, Cinotti AA: Ultrastructural abnormalities in a Marfan's syndrome lens. Arch Ophthalmol 95:1601, 1977)