Zonulopathy is a state in which there is a deficiency of zonular support for the lenticular capsule. Zonulopathy may include malposition of the lens (subluxation or dislocation), though in many cases no malposition may be present. Synonymous Terminology: Zonular Dehiscence. Zonular Dialysis.In this regard, what is Zonular dehiscence?
One of the most common causes of zonular dehiscence is pseudoexfoliation. Extraocular trauma and surgical trauma are also frequent causes. If the lens jiggles, that means the patient has loose zonules and there is phacodonesis. Patients who have pre-op phacodonesis need a CTR.
Secondly, what is a capsular tension ring used for? Capsular tension rings (CTRs), well known to ophthalmic surgeons, are C-shaped devices used to stabilize the capsular bag of the crystalline lens during cataract surgery in eyes with zonular weakness.
Beside this, what is Zonular weakness?
“In the normal eye, the zonules hold the lens (the cataract) in place. If the zonules are weak, that cataract tends to push forward and push the back of the iris toward the front of the eye. When you have a normal-sized eye, but the anterior chamber is shallow, that may be a sign.”
What is Zonulopathy?
Zonulopathy is a state in which there is a deficiency of zonular support for the lenticular capsule. Zonulopathy may include malposition of the lens (subluxation or dislocation), though in many cases no malposition may be present. Synonymous Terminology: Zonular Dehiscence. Zonular Dialysis.
What is exfoliation syndrome?
Exfoliation syndrome (XFS) is an age-related disease in which abnormal fibrillar extracellular material is produced and accumulates in many ocular tissues. Its ocular manifestations involve all of the structures of the anterior segment, as well as conjunctiva and orbital structures.What are Zonules in the eye?
The zonule of Zinn (/ˈts?n/) (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.What causes Pseudoexfoliation syndrome?
Causes. The cause of pseudoexfoliation glaucoma is generally unknown. PEX is generally believed to be a systemic disorder, possibly of the basement membrane of the eye. Researchers have noticed deposits of PEX material in various parts of the body, including in the skin, heart, lungs, liver, kidneys, and elsewhere.What is Zonular cataract?
Lamellar/Zonular cataract. This type of cataract is bilateral. It can be congenital or it can be acquired during the first years of life due to tetany or rickets. The cataract is always large enough to occlude the pupil. Its effect on vision depends primarily on the density of its components - especially the nucleus.What is primary posterior capsulorhexis?
A Primary Posterior Continuous Curvilinear Capsulorhexis (PPCCC) is the method of removing the central part or the posterior capsule during cataract surgery to prevent the formation of Posterior Capsule Opacification (PCO).What is Pseudoexfoliation syndrome?
Pseudoexfoliation syndrome (PXF or PEX) is an age-related systemic syndrome that targets mainly ocular tissues through the gradual deposition of fibrillary white flaky material from the lens, mainly on the lens capsule, ciliary body, zonules, corneal endothelium, iris and pupillary margin.What is the capsular bag?
'bag', capsular A sack-like structure remaining within the eye following extracapsular cataract extraction or phacoemulsification. The implanted intraocular lens is placed within this structure to recreate the usual phakic state.Where is the ciliary body located in the eye?
The ciliary body is anatomically located anterior to the iris and is involved in regulating three major functions in the eye: (i) it secretes aqueous humor, which passes in front of the lens and drains out of the eye via tubules called the trabecular meshwork and canal of Schlemm near to the junction of cornea and irisWhere is the ciliary Zonule?
The zonule, often referred to as the ciliary zonule, is the circumferential suspensory ligament that connects the lens of the eye to the ciliary body. The zonule is composed of an elaborate system of fibers that spans the gap between the lens and the adjacent nonpigmented ciliary epithelium (NPCE).What is CTR in cataract surgery?
Capsular tension rings (CTR) are C-shaped devices made of polymethylmethacrylate used during cataract surgery to stabilize the lens capsule. CTRs were first introduced by Hara et al1 in 1991. These rings are used to increase the stability of the lens capsule during and after lens extraction and IOL implantation.Is a capsular tension ring an implant?
Do not implant a capsular tension ring in the presence of an existing anterior or posterior capsule tear. Posterior capsular tears may extend further, and thus a CTR should not be implanted in such cases unless you perform a posterior capsulorhexis. 
