The zonule of Zinn (/ˈtsɪn/) (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.org)
The zonule of Zinn is split into two layers: a thin layer, which lies near the hyaloid fossa, and a thicker layer, which is a collection of zonular fibers. (wikipedia.org)
When colour granules are displaced from the zonules of Zinn (by friction against the lens), the irises slowly fade. (wikipedia.org)
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. (wikipedia.org)
When colour granules are displaced from the zonules of Zinn, caused by friction of the lens, the iris can slowly fade. (wikipedia.org)
In our body's eyes , Zonule of Zinn (Ciliary Zonule) , aka Zinn's Membrane, is a ring of fibrous strands connecting the ciliary body with the crystalline eye lens. (wellnessadvantage.com)
In our body, the suspensory ligament of lens aka the Zonule of Zinn (Ciliary Zonule) centers the ocular lens in the path of light and transmits ciliary muscle forces involved in accommodation . (wellnessadvantage.com)
The zonule of Zinn might sound like a mystic land or faraway galaxy, but it's the name given to the band of fibers that suspends the eye's lens. (nih.gov)
It is connected to the lens with a network of many tiny ligaments (called ciliary zonules or zonules of Zinn) that suspend the lens in place behind the pupil. (allaboutvision.com)
The zonules of Zinn keep the lens suspended, and the muscles of the ciliary body focus the lens. (msdmanuals.com)
Fibers9
Like puppet strings, zonule fibers pull or relax to change the lens's shape, enabling the eye to adjust focus. (nih.gov)
New NEI-supported research provides insight into the eye conditions associated with Marfan syndrome, where weakened zonule fibers cause vision problems. (nih.gov)
In the eye, the mutations weaken the zonule fibers to the point of breaking and letting go of the lens, a condition called ectopia lentis. (nih.gov)
Our study is the first to pinpoint where in the eye fibrillin-1 is synthesized, opening the door to treatments aimed at repairing or regenerating zonule fibers. (nih.gov)
Anterior chamber (between cornea and iris), Posterior chamber (between iris, zonule fibers and lens) and the Vitreous chamber (between the lens and the retina). (utah.edu)
The lens is suspended by ligaments (called zonule fibers) attached to the anterior portion of the ciliary body. (utah.edu)
The lens is held in place by small tissue strands or fibers (zonules) extending from the inner wall of the eye. (peacehealth.org)
The equatorial region also serves as the site of attachment for the zonule fibers extending from the ciliary body. (digitalhistology.org)
Also known as zonular fibers or zonular suspensory ligaments, zonules are a series of delicate fibers that hold the lens of the eye in place. (ophthalmologybreakingnews.com)
The rim of a small-sized lens along with zonule is clearly seen through the fully dilated pupil. (amulyam.com)
Capsular2
In most cases, the goal of this type of lens surgery is the same as that for eyes without a compromised zonule: to remove the contents of the capsular bag through a CCC[continuous curvilinear capsulectomy] and replace the contents with a foldable IOL. (amulyam.com)
Capsular Tension Rings (CTRs) are indicated to stabilize weakened, broken or missing zonules, preventing IOL decentration after capsular shrinkage. (morcher.com)
Weak5
In addition, the presentations covered phaco in patients with uveitis, Fuchs dystrophy, intraoperative floppy iris syndrome (IFIS) and small pupils, diabetic retinopathy, glaucoma, pseudoexfoliation with weak zonules, high myopia, and high hyperopia with a crowded anterior segment. (aao.org)
The phaco techniques I use on patients with PXF syndrome are designed to place minimal stress on weak zonules. (crstoday.com)
The I/A phases of phacoemulsification can be tedious in eyes with PXF and, if not performed carefully, can strip away weak zonules. (crstoday.com)
Many surgeons favor a horizontal chop technique for eyes with weak zonules. (crstodayeurope.com)
Cataract1
Whether operating on a dense white cataract or a nucleus with moderate sclerosis, I prefer a manual technique that is gentle on the zonules. (crstodayeurope.com)
Ocular lens1
A neural feedback mechanism from the brain allows the ciliary muscle 108 , acting through the attachment of the zonules 111 , to change the shape of the ocular lens. (justia.com)
Lens capsule3
The zonules attach to the lens capsule 2 mm anterior and 1 mm posterior to the equator, and arise of the ciliary epithelium from the pars plana region as well as from the valleys between the ciliary processes in the pars plicata. (wikipedia.org)
Dr. Schor developed a biomechanical model of the accommodation plant, (i.e., lens, capsule, ciliary zonules and muscle), to be used by industry in the development of accommodating intraocular lenses (for example, AIOL), that are dynamic intraocular implant replacements for cataracts. (berkeley.edu)
This equatorial stretching can disrupt the lens capsule, zonules, or both. (medscape.com)
Anterior3
[ 3 , 4 ] Many believe that this exacerbates physical contact of the posterior iris surface against the anterior lens zonules and results in excessive pigment release into the aqueous fluid. (medscape.com)
In 1979, David G. Campbell, MD, proposed that pigment is released from the pigment epithelium of the iris when it rubs against the lens and the anterior lens zonules during normal pupil movements. (medscape.com)
It is also vital not to challenge the integrity of the zonules by making the anterior chamber too shallow or overpressurizing the eye. (crstodayeurope.com)
CTRs2
CTRs can decrease capsulophimosis and distribute forces to the zonules more equally. (crstoday.com)
The placement of these devices can exert stress on the zonules, however, and CTRs can complicate I/A if they are inserted too early. (crstoday.com)
Zonulopathy1
No matter how many maneuvers are performed in the office to predict the status of the zonules, the extent of the zonulopathy is often unknown until a case begins. (crstodayeurope.com)
Incidence1
In the conventional group, on the other hand, they noted a higher incidence of zonule dialysis compared with the FLACS group. (medscape.com)
Strings1
The lens is held in place within the eye by multiple radial 'strings' called zonules. (bbc.co.uk)
Phacodonesis1
Poor pupillary dilation made it impossible to determine if there were areas of missing zonules (Figure 2), but there was no frank phacodonesis. (crstodayeurope.com)
Occurs2
Each tight junction is followed by an adhering zonule extending between arrows 2 and 3 and, farther away, by a desmosome marked D. A condensation of finely fibrillar material occurs mainly along the adhering zonules on each side of the bile capillary. (amulyam.com)
The greatest amount of stress on the zonules occurs during rotation, so after the initial crack, the two hemi-nuclear fragments are removed without rotation. (crstodayeurope.com)
Tension2
The zonules, which provide the tension to manipulate the lens, lose some of their zing too. (aoa.org)
This force is equalized throughout the entire zonula-capsule apparatus, thereby transfering the tension from intact and normal zonules to those areas of zonular weakness or absence. (morcher.com)
The number of zonules present in a person appears to decrease with age. (wikipedia.org)
Examination1
An examination found 8 clock hours of missing zonules. (crstodayeurope.com)
Stress3
He discusses the advantages of this technique and how, with the support of the Proveo 8 and M822 surgical microscopes from Leica Microsystems, this leads to the reduction of total ultrasound energy and phacoemulsification time as well as decreased stress on zonules. (leica-microsystems.com)
Less power, reduce stress on zonules and less dependence on red reflex. (leica-microsystems.com)
In the hands of an experienced surgeon, chopping techniques put little pressure and stress on the zonules. (crstodayeurope.com)
Small1
If the nucleus is too hard for prechopping, or if I am working through a particularly small pupil, I use a zonule-friendly vertical chopping technique. (crstoday.com)
Technique1
In my experience, the technique I use is gentle on the zonules, efficient, and easy to teach. (crstodayeurope.com)
Formation1
Congenital displacement of the lens resulting from defective zonule formation. (umassmed.edu)
Forces1
The surface area will distribute the countertraction forces and prevent the prying motion from breaking zonules. (rumex.pe)
High1
High-resolution microscopy showed that without fibrillin-1, zonules failed to make proper bundles. (nih.gov)
Body1
Like the zonules in the eye, elastic connective tissue throughout the body needs the proper support structure to function properly. (nih.gov)