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tell a relatively insignificant lie; "Fibbing is not acceptable, even if you dont call it lying"
a trivial lie; "he told a fib about eating his spinach"; "how can I stop my child from telling stories?" (同)story, tale, tarradiddle, taradiddle
a slender and greatly elongated substance capable of being spun into yarn (同)fibre
a leatherlike material made by compressing layers of paper or cloth (同)fibre, vulcanized fiber
any of several elongated, threadlike cells (especially a muscle fiber or a nerve fiber) (同)fibre

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(ささいな,罪のない)うそ / 軽いうそをつく

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2014/08/21 19:36:48」(JST)

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The zonule of Zinn (Zinn's membrane, ciliary zonule) (after Johann Gottfried Zinn) is a ring of fibrous strands connecting the ciliary body with the crystalline lens of the eye.

Development

The ciliary epithelial cells of the eye probably synthesize portions of the zonules.^[1]

Anatomy

The zonule of Zinn is split into two layers: a thin layer, which lines the hyaloid fossa, and a thicker layer, which is a collection of zonular fibers. Together, the fibers are known as the suspensory ligament of the lens.^[2] The zonules are about 1–2 μ in diameter.^[3]

When colour granules are displaced from the Zonules of Zinn (by friction against the lens), the irises slowly fade. In some cases those colour granules clog the channels and lead to Glaucoma Pigmentosa.

The zonules are primary made of fibrillin, a connective tissue protein.^[1] Mutations in the fibrillin gene lead to the condition Marfans Syndrome, and consequences include an increased risk of lens dislocation.^[1]

Clinical appearance

The zonules of Zinn are difficult to visualize using a slit lamp, but may be seen with exceptional dilation of the pupil, or if a coloboma of the iris or a subluxation of the lens is present.^[4] The number of zonules present in a person appears to decrease with age.^[3] The zonules insert around the outer margin of the lens (equator), both anteriorly and posteriorly.^[5]

Additional Images

Structures of the eye labeled
This image shows another labeled view of the structures of the eye

References

^ ^a ^b ^c Kaufman, Paul L.; Alm, Albert (2010). Adler's physiology of the eye (11th ed. ed.). St. Louis, Mo: Mosby. pp. 145–146. ISBN 978-0-323-05714-1.
^ http://www.etsu.edu/cpah/hsci/forsman/WebVision.htm
^ ^a ^b Bornfeld, Norbert; Spitznas, Manfred; Breipohl, Winrich; Bijvank, Gerhard J. (1974). "Scanning electron microscopy of the zonule of Zinn". Albrecht von Graefes Archiv for Klinische und Experimentelle Ophthalmologie 192 (2): 117–129. doi:10.1007/BF00410698. |accessdate= requires |url= (help)
^ McCulloch, C (1954–1955). "The Zonule of Zinn: its Origin, Course, and Insertion, and its Relation to Neighboring Structures.". Transactions of the American Ophthalmological Society 52: 525–85. PMC 1312608. PMID 13274438. Retrieved 15 December 2012.
^ Farnsworth, PN; Mauriello, JA; Burke-Gadomski, P; Kulyk, T; Cinotti, AA (January 1976). "Surface ultrastructure of the human lens capsule and zonular attachments.". Investigative ophthalmology 15 (1): 36–40. PMID 1245377. |accessdate= requires |url= (help)

External links

Diagram at unmc.edu
Diagram at eye-surgery-uk.com
Diagram and overview at webschoolsolutions.com
ciliary+zonule at eMedicine Dictionary
Histology image: 08011loa - Histology Learning System at Boston University

This article incorporates text from a public domain edition of Gray's Anatomy.

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English Journal

Ocular phenotype of Fbn2-null mice.

Shi Y1, Tu Y, Mecham RP, Bassnett S.
Investigative ophthalmology & visual science.Invest Ophthalmol Vis Sci.2013 Nov 1;54(12):7163-73. doi: 10.1167/iovs.13-12687.
PURPOSE: Fibrillin-2 (Fbn2) is the dominant fibrillin isoform expressed during development of the mouse eye. To test its role in morphogenesis, we examined the ocular phenotype of Fbn2(-/-) mice.METHODS: Ocular morphology was assessed by confocal microscopy using antibodies against microfibril compo
PMID 24130178

Preoperative and postoperative size and movements of the lens capsular bag: ultrasound biomicroscopy analysis.

Modesti M1, Pasqualitto G, Appolloni R, Pecorella I, Sourdille P.
Journal of cataract and refractive surgery.J Cataract Refract Surg.2011 Oct;37(10):1775-84. doi: 10.1016/j.jcrs.2011.04.035.
PURPOSE: To evaluate capsular bag size and accommodative movement before and after cataract surgery using ultrasound biomicroscopy (UBM) and anterior segment optical coherence tomography (AS-OCT).SETTING: Ophthalmology Unit, Fabia Mater Clinic, Rome, Italy.DESIGN: Cohort study.METHODS: Eyes having c
PMID 21930044

Late capsular bag contraction and intraocular lens subluxation in retinitis pigmentosa: a case report.

Najjar DM1, Igbre AO, Tsai FF.
Journal of medical case reports.J Med Case Rep.2011 Feb 14;5:65. doi: 10.1186/1752-1947-5-65.
INTRODUCTION: Retinitis pigmentosa is clinically characterized by loss of predominantly rod photoreceptor function as well as loss of peripheral vision. The classic clinical triad is considered to be the presence of bone spicule pigmentation in the peripheral retina, arteriolar attenuation, and waxy
PMID 21320335

「眼球」

Zonule of Zinn
	Schematic diagram of the human eye. (Zonular fibers labeled at upper left.)
	The upper half of a sagittal section through the front of the eyeball. (Zonule of Zinn visible near center.)
Latin	zonula ciliaris
Gray's	p.1018
	Anatomical terminology