Zonule of Zinn

suspensory ligament of the lenszonular fibersciliary zonuleciliary zonuleszonules of Zinnzonularzonulezonulesfiberssuspensory ligament
The zonule of Zinn (Zinn's membrane, ciliary zonule) (after Johann Gottfried Zinn) is a ring of fibrous strands forming a zonule (little band) that connects the ciliary body with the crystalline lens of the eye.wikipedia
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Ciliary body

ciliaryciliary epitheliumannular
The zonule of Zinn (Zinn's membrane, ciliary zonule) (after Johann Gottfried Zinn) is a ring of fibrous strands forming a zonule (little band) that connects the ciliary body with the crystalline lens of the eye.
The ciliary body is attached to the lens by connective tissue called the zonular fibers (fibers of Zinn).

Lens (anatomy)

lenscrystalline lenslenses
The zonule of Zinn (Zinn's membrane, ciliary zonule) (after Johann Gottfried Zinn) is a ring of fibrous strands forming a zonule (little band) that connects the ciliary body with the crystalline lens of the eye.
The lens is suspended in place by the suspensory ligament of the lens, a ring of fibrous tissue that attaches to the lens at its equator and connects it to the ciliary body.

Human eye

eyeeyeseyeball
The zonule of Zinn (Zinn's membrane, ciliary zonule) (after Johann Gottfried Zinn) is a ring of fibrous strands forming a zonule (little band) that connects the ciliary body with the crystalline lens of the eye.
The lens is suspended to the ciliary body by the suspensory ligament (Zonule of Zinn), made up of hundreds of fine transparent fibers which transmit muscular forces to change the shape of the lens for accommodation (focusing).

Johann Gottfried Zinn

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

Ligament

ligamentsknee ligamentcapsular ligaments
These fibers are sometimes collectively referred to as the suspensory ligaments of the lens, as they act like suspensory ligaments.

Glaucoma

open-angle glaucomaangle closure glaucomaacute angle-closure glaucoma
In some cases those colour granules clog the channels and lead to Glaucoma Pigmentosa.
Aqueous humor flows from the ciliary processes into the posterior chamber, bounded posteriorly by the lens and the zonules of Zinn, and anteriorly by the iris.

Marfan syndrome

Marfan's syndromeMarfanMarfanoid
Mutations in the fibrillin gene lead to the condition Marfan syndrome, and consequences include an increased risk of lens dislocation.
This occurs because of weakness in the ciliary zonules, the connective tissue strands which suspend the lens within the eye.

Ectopia lentis

lens luxationlens subluxationlens dislocation
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.
Ciliary zonules normally hold the lens in place.

Hyaloid fossa

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.

Fibrillin

FBN2fibrillin-1FBN3
The zonules are primarily made of fibrillin, a connective tissue protein.

Coloboma

colobomasColoboma, ocularcolobomata
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.

Orbit (anatomy)

orbitorbitseye socket
The orbital contents comprise the eye, the orbital and retrobulbar fascia, extraocular muscles, cranial nerves II, III, IV, V, and VI, blood vessels, fat, the lacrimal gland with its sac and nasolacrimal duct, the eyelids, medial and lateral palpebral ligaments, check ligaments, the suspensory ligament, septum, ciliary ganglion and short ciliary nerves.

Posterior chamber of eyeball

posterior chamberposteriorposterior chambers
The posterior chamber is a narrow space behind the peripheral part of the iris, and in front of the suspensory ligament of the lens and the ciliary processes.

Sudden cardiac death of athletes

sudden cardiac deathsudden deathsudden cardiac death in young athletes
Since these fibers are particularly abundant in the aorta, ligaments, and the ciliary zonules of the eye, these areas are among the worst affected.

Accommodation (eye)

accommodationaccommodateaccommodation of the eye
This dramatic change in focal power of the eye of approximately 15 dioptres (the reciprocal of focal length in metres) occurs as a consequence of a reduction in zonular tension induced by ciliary muscle contraction.

Ciliary processes

ciliary process
the choroid proper and the lamina basalis, and are received between corresponding foldings of the suspensory ligament of the lens.

Ciliary muscle

ciliary musclesciliarycilia
According to Hermann von Helmholtz's theory, the circular ciliary muscle fibers affect zonular fibers in the eye (fibers that suspend the lens in position during accommodation), enabling changes in lens shape for light focusing.

Accommodation reflex

accommodationaccommodatingaccommodative
The suspensory zonules of Zinn relax and the radial tension around the lens is released.

Parson Russell Terrier

Jack Russell TerrierParson Jack Russell Terrier
This disease causes the zonular fibres to be abnormal and begin to disintegrate in affected dogs.

Pars plicata

The lens zonules that are used to control accommodation are attached to the pars plicata.

Intraocular lens

intraocular lensesartificial lensImplantable Collamer Lens
Accommodating IOLs interact with ciliary muscles and zonules, using hinges at both ends to “latch on” and move forward and backward inside the eye using the same mechanism as normal accommodation.

Dioptre

diopterdioptersD
In focusing, the ciliary muscle contracts to reduce the tension or stress transferred to the lens by the suspensory ligaments.

Phacodonesis

This is often due to lens subluxation, the incomplete or partial dislocation of the lens, caused by an injury to the eye in which some or most of the zonular fibers are broken.