HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Full Text (PDF) Submit a response Alert me when this article is cited Alert me when eLetters are posted Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in ISI Web of Science Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via ISI Web of Science (2) Citing Articles via Google Scholar Google Scholar Articles by Bernal, A. Articles by Manns, F. Search for Related Content PubMed PubMed Citation Articles by Bernal, A. Articles by Manns, F.

Evidence for Posterior Zonular Fiber Attachment on the Anterior Hyaloid Membrane

¹From the Ophthalmic Biophysics Center, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, Florida; ²Biomedical Optics and Laser Laboratory, Department of Biomedical Engineering, University of Miami College of Engineering, Coral Gables, Florida; ³University of Liege Department of Ophthalmology, CHU Sart-Tillman, Liege, Belgium; and the ⁴University of Paris Hotel-Dieu Hospital, Paris, France.

PURPOSE. To image the posterior zonular attachment site by using environmental scanning electron microscopy (ESEM).

METHODS. A custom-made device was designed to mount human cadaveric lenses, with the zonule, ciliary body, and sclera attached, inside an environmental scanning electron microscope (ESEM). The mount was designed to allow radial stretching to enhance exposure of the accommodation apparatus. Seven fresh human eye bank eyes (age: 62–82 years; 24–48 hours after death) were dissected, mounted, and imaged in wet mode. The insertion site of the posterior zonule was examined.

RESULTS. Detailed pictures of the accommodation apparatus were obtained in all eyes. A strong relation between the posterior zonule and the anterior hyaloid membrane was observed. Anterior view micrographs showed that posterior zonular fibers originate from the ciliary body and anchor in the hyaloid membrane. From the point of insertion, the fibers continue on their course toward the posterior lens capsule in the plane of the hyaloid membrane.

CONCLUSIONS. Contrary to the classic description, the majority of posterior zonular fibers are not attached directly to the posterior lens capsule, but are anchored to the anterior hyaloid membrane on their path from the ciliary body to the posterior capsule. This finding is in good agreement with several previous observations and models that suggest support of the posterior lens surface during accommodation.

This article has been cited by other articles:

				F. Manns, J.-M. Parel, D. Denham, C. Billotte, N. Ziebarth, D. Borja, V. Fernandez, M. Aly, E. Arrieta, A. Ho, et al. Optomechanical Response of Human and Monkey Lenses in a Lens Stretcher Invest. Ophthalmol. Vis. Sci., July 1, 2007; 48(7): 3260 - 3268. [Abstract] [Full Text] [PDF]