Posterior capsule lens capsule crystalline. Medical search. Frequent questions

Posterior capsular opacification and posterior capsule rupture are common complications of cataract surgery. (wikipedia.org)
Cataract, an opacification of the natural crystalline lens, is a significant cause of reversible blindness worldwide. (springer.com)
A cataract is the progressive opacification of the crystalline lens, an extremely transparent lentil-shaped structure in the eye, which acts as a real lens. (alfaintes.it)
Among the most frequent late complications of cataract extraction surgery is opacification of the posterior capsule, i.e. a thickening of the thin transparent membrane that forms the "bag" containing the natural crystalline lens and in which the artificial intraocular lens is placed at the time of surgery. (alfaintes.it)
The particular symptoms depend on the location and density of the opacity, although the most characteristic sign is the opacification of the lens , which should normally be transparent (see the respective types below). (icrcat.com)
RESULTS: Transient posterior capsule opacification was noted in all animals. (eyehospital.nl)
Ocular toxicity was assessed by slit-lamp biomicroscopy, ophthalmoscopy, electroretinography and histology.RESULTS: Transient posterior capsule opacification was noted in all animals. (eyehospital.nl)
In order to reduce Posterior Capsular Opacification (PCO), Asteri and CIMflex IOLs feature a continuous 360° Square Edge along the haptic-optic junction. (cimatechinc.com)

Because the cataract was contracted and calcified, a black Morcher 85F poly(methyl methacrylate) IOL was implanted in the ciliary sulcus anterior to the lens to prevent posterior capsule rupture and potential destabilization of the retinal detachment with a risk for phthisis. (ox.ac.uk)
Intraoperative variables such as small pupil, extension of capsulorhexis, zonular separation, posterior capsule rupture and vitreous loss were assessed. (journalcra.com)
Results: In our study we found that 1(2%) patient out of 50 patients who underwent CTR implantation had zonular dialysis compared to 6(12%) out of 50 patients in non CTR group which was statistically significant (p=0.013) and also there was decrease in incidence of posterior capsular rupture noted in 2(4%) in CTR group and 8(16%) in non CTR group which was statistically significant (p value=0.042). (journalcra.com)
While lens fragments may be retained in the anterior or posterior chamber during seemingly uncomplicated cataract surgery, they also may be dislocated posteriorly into the vitreous cavity during phacoemulsification of the nucleus, usually after zonular dehiscence or posterior capsule rupture. (medscape.com)

The best place for intraocular lens implantation is within the capsular bag. (wikipedia.org)
They include phakic intraocular lenses and a procedure like clear lens extraction with high-plus power lens implantation. (medscape.com)
With this information, the calculator determines the most appropriate cylindrical power of the lens (ie, the model T3, T4, or T5) and, axis of implantation. (crstoday.com)
In addition, the calculator has recently been enhanced to show the amount and location of the anticipated residual astigmatism following the lens implantation. (crstoday.com)
Unsutured phakic implantation of a black intraocular lens in the sulcus to treat leukocoria. (ox.ac.uk)
We suggest that this is a rare indication for implantation of an IOL designed for the sulcus but in the presence of the crystalline lens. (ox.ac.uk)
Posterior iris fixation of the iris-claw intraocular lens implantation through a scleral tunnel incision. (ophtec.com)
Why is lens implantation necessary in cataract surgery? (icrcat.com)
Extracapsular cataract extraction (ECCE) involves the removal of almost the entire natural lens while the elastic lens capsule (posterior capsule) is left intact to allow implantation of an intraocular lens. (prashantsrivastava.com)

The capsule is the basement membrane for the epithelial cells at the front of the lens and the rapidly growing more flexible fiber cells of the back of the lens and below the epithelium at the front. (wikipedia.org)
The capsular bag is the basal membrane of the lens epithelium. (crstodayeurope.com)
It is secreted by the embryonic anterior and posterior epithelium. (lookformedical.com)
The embryonic posterior epithelium later disappears. (lookformedical.com)
By virtue of its capacity to synthesize alpha crystallins, the lens epithelium may become strongly antigenic. (medscape.com)

A posterior subcapsular cataract disproportionately affects vision because the opacity is located at the crossing point of incoming light rays. (msdmanuals.com)

Pars plana vitrectomy (PPV) is a commonly employed technique in vitreoretinal surgery that enables access to the posterior segment for treating conditions such as retinal detachments, vitreous hemorrhage, endophthalmitis, and macular holes in a controlled, closed system. (eyewiki.org)
[2] [3] In 1974, Conor O'Malley and Ralph Heintz developed the modern-day three-port vitrectomy system - with dedicated ports for vitreous removal using the vitrectomy cutter, infusion of fluid to maintain IOP, and illumination of the posterior segment - using 20-gauge instruments. (eyewiki.org)
Documentation by previous eye providers had labeled Mr. Grover as aphakic in the right eye, suggesting that the lens dislocation happened years ago or around the time of the accident, with the nucleus initially falling into and resting in the vitreous cavity. (aao.org)
A transparent, biconvex structure of the EYE, enclosed in a capsule and situated behind the IRIS and in front of the vitreous humor (VITREOUS BODY). (lookformedical.com)
Generally, sight occurs when light enters the eye through the cornea 101 and pupil, then proceeds through the ocular lens 103 through the vitreous 110 along the visual axis 104 , strikes the retina 105 at the back of the eye, forming an image at the macula 106 that is transferred by the optic nerve 107 to the brain. (justia.com)
The space between the cornea 101 and the retina 105 is filled with a liquid called the aqueous 117 in the anterior chamber 109 and the vitreous 110 , a gel-like clear substance, in the chamber posterior to the lens. (justia.com)
The three refracting media are named, from before backwards, the aqueous humour, the crystalline lens, and the vitreous body. (co.ma)

The exam was most notable for something we saw in the right eye-a large dense hexagonal brown mass in the anterior chamber consistent with a dislocated crystalline lens nucleus ( Fig. 1 ). (aao.org)
The making of a continuous circular tear in the anterior capsule during cataract surgery in order to allow expression or phacoemulsification of the nucleus of the lens. (lookformedical.com)
Suction is then employed to aspirate the cortical material or the soft parts of the lens surrounding the nucleus. (healthnews.com)
After making the incisions, the crystalline lens capsule must be opened so that the opacified nucleus can be removed through this opening. (scopeheal.com)
Once the posterior lens cortex and capsule have been hydrodissected, the surgeon can rotate the nucleus within the capsular bag to facilitate removal by phacoemulsification. (scopeheal.com)
Definisi Katarak adalah adanya kekeruhan pada lensa, bisa terjadi pada cortex, nucleus, atau kapsul posterior. (scribd.com)

Due to this zonular tension anterior lens surface is flatter resulting in more distant objects being in focus. (wikipedia.org)
When ciliary muscles contract, the zonular tension will reduce allowing lens to assume more spherical shape. (wikipedia.org)
Lens luxation (or dislocation) can be associated with various processes that can weaken or damage the zonular-capsular complex. (aao.org)

Refractive errors can be surgically corrected either by reshaping the cornea through laser vision correction or implanting a phakic intraocular lens such as the Visian implantable collamer lens (ICL, Staar Surgical, Monrovia, CA, USA). (biomedcentral.com)
The space in the eye, filled with aqueous humor, bounded anteriorly by the cornea and a small portion of the sclera and posteriorly by a small portion of the ciliary body, the iris, and that part of the crystalline lens which presents through the pupil. (lookformedical.com)
Astigmatism is caused by distortion of the crystalline lens and cornea, which is the lens of the eye. (miyoshi-eye-clinic.com)
The sclera 131 is the white tissue that surrounds the lens 103 except at the cornea 101 . (justia.com)
A cataract is a gradual clouding of the crystalline lens (the part of the eye that works with the cornea to refract light focused on the retina). (brobergeyecare.com)
Used in Lasik treatments and for treating the cornea with lamellar transplants and perforating transplants, arcuate keratotomies and intracorneal lenses. (camospa.it)
This instrument is used to study the structures in the first portion of the eye (cornea, iris and crystalline lens) individually, and the spaces that lie between them. (camospa.it)
It involves manual expression of the lens through a large (usually ten to twelve mm) incision made in the cornea or sclera. (prashantsrivastava.com)

Given all of the technologies and treatments we have at our disposal to correct refractive errors and treat patients with cataracts, it is a wonder that we have not yet conceived an accommodating IOL design that perfectly mimics the movement of the natural crystalline lens. (crstodayeurope.com)
Well-developed cataracts appear as gray, white, or yellow-brown opacities in the lens. (msdmanuals.com)
Cataracts are a disease in which the crystalline lens becomes clouded. (miyoshi-eye-clinic.com)
The conversion process from soluble crystallins to insoluble proteins during aging of the lens also may result in an increased antigenic effect of proteins from mature or hypermature cataracts . (medscape.com)
The only proven treatment for cataracts is lens replacement surgery. (healthnews.com)
The lens, where cataracts form, is positioned behind the colored part of your eye (iris). (prashantsrivastava.com)

The present invention relates to systems and methods for treating the structure of the natural human crystalline lens with a laser to address a variety of medical conditions, such as presbyopia and refractive error. (justia.com)
The terms ocular lens, natural crystalline lens, natural lens, natural human crystalline lens, and lens (when referring to the prior terms) are used interchangeably herein and refer to the same anatomical structure of the human eye. (justia.com)
The CIMflex line of natural yellow hydrophilic acrylic IOLs takes advantage of the latest technology in UV-A blocking and violet/dark blue light filtering material by using the same chromophore that is present in the human crystalline lens. (cimatechinc.com)

During more common extra capsular cataract surgery procedures like micro incision cataract surgery, phacoemulsification etc., clouded lens is removed through opening made in anterior lens capsule. (wikipedia.org)
Conclusion: We found that, CTRs ensure safe removal of crystalline lens and stable placement of the IOL during phacoemulsification of eyes with pseudo exfoliation syndrome, thus preventing the risk of intraoperative & postoperative complications & improve patient outcomes. (journalcra.com)
However, chronic postoperative uveitis following phacoemulsification with retained lens material is still a well-known complication of cataract surgery and is the result of the same pathophysiology as the classically described entity of phacoanaphylaxis. (medscape.com)

The lens is 8.5 mm at the widest point, far away from the angle of the anterior chamber. (medscape.com)
In 1996, Davidorf, Zaldivar, and Oscherow presented their results with the STAAR Collamer plate haptic posterior chamber phakic IOL in 24 phakic hyperopes. (medscape.com)
It will also be challenging to place the intraocular lens (IOL) in the posterior chamber with both haptics under the iris. (cehjournal.org)
After placing Healon (Abbott Medical Optics) in the anterior chamber, I direct a 30-gauge cannula on a Healon syringe into the center of the lens and inject the OVD (Figure 1). (crstoday.com)
With this finding, we diagnosed lens luxation into the anterior chamber. (aao.org)
Later, after the lens had been reposited into the posterior chamber, (2A) slit lamp showed the anterior chamber without the mass, and (2B) indirect biomicroscopy ophthalmoscopy with a 20-D lens showed the crystalline lens behind the iris. (aao.org)
A procedure for removal of the crystalline lens in cataract surgery in which an anterior capsulectomy is performed by means of a needle inserted through a small incision at the temporal limbus, allowing the lens contents to fall through the dilated pupil into the anterior chamber where they are broken up by the use of ultrasound and aspirated out of the eye through the incision. (lookformedical.com)

The vault, which is the safe distance between the posterior surface of the ICL and the anterior capsule of the crystalline lens, is the measurable gauge of how the ICL best fits in the sulcus space. (biomedcentral.com)

Once the crystalline lens is removed-that is, once the capsular bag is empty-it no longer has any reason to exist. (crstodayeurope.com)
For these reasons, the capsular bag seems to be an inadequate location for accommodating IOLs, mainly due to the fibrosis and atrophy that occur after crystalline lens removal. (crstodayeurope.com)
Once inside the capsular bag, increased contact of the optic with the posterior capsule from Asteri or CIMflex series IOLs, create a barrier to PCO and increased stability. (cimatechinc.com)

The question remains: Will we ever succeed in creating an IOL that reproduces the mechanisms of the ciliary body and crystalline lens?There have been reports of objective and subjective evidence showing the accommodative amplitude of certain IOLs, 1,2 but, in order to get to the bottom of this issue, we must first review the basic principles of accommodating IOL designs. (crstodayeurope.com)

The visual effect is that of a "second cataract", but in this case it is possible to intervene using a laser instrument often available in eye clinics that pulverises and opens the thickened and opaque posterior capsule. (alfaintes.it)

The core of the crystalline lens, surrounded by the cortex. (lookformedical.com)
Following capsulorhexis, fluid irrigation or hydrodissection is performed gently to separate the lens capsule's cortex. (scopeheal.com)

Even though the capsule is a highly elastic structure, it contains no elastic fibers. (wikipedia.org)
Lens capsule developed from basal lamina of lens vesicle will cover early lens fibers. (wikipedia.org)
[ 21 ] Each of the crystallin protein groups of lens cortical fibers contains a number of subtypes with distinct antigenic characteristics. (medscape.com)
Note marked inflammatory reaction consisting of polymorphonuclear cells around lens capsule and lens fibers (hematoxylin and eosin X100). (medscape.com)

It involves the removal of almost the entire natural lens in a single piece, leaving the elastic posterior capsule intact. (healthnews.com)

This leaves several of the capsule behind to keep your artificial lens in place (like a cuff around the IOL) but gets rid of enough between to allow the light to pass straight through to the retina. (withink1.us)
Insertion of an artificial lens to replace the natural CRYSTALLINE LENS after CATARACT EXTRACTION or to supplement the natural lens which is left in place. (lookformedical.com)
An intraocular lens is an artificial lens that is implanted in the eye instead of the lens extracted by cataract surgery. (miyoshi-eye-clinic.com)

There is disclosed a new and improved intraocular lens (IOL) for use by surgeons as a replacement for a person's cataractous lens. (justia.com)
The removal of a cataractous CRYSTALLINE LENS from the eye. (lookformedical.com)
Although the standard monofocal IOL may reduce a patient's need for glasses, it is designed to replace the cataractous crystalline lens once it has been removed. (prashantsrivastava.com)

Clouding at the back of the lens is called a subscapular cataract, while cloudiness at the core of the lens is called a nuclear cataract. (scopeheal.com)

When the oil moves from the haptics to the optic, the optical power of the lens increases. (crstodayeurope.com)
Normally, the images that enter the eye are directed to the retina (and from there to the brain via the optic nerve) thanks to the effect of, among other elements, the crystalline lens, but if the lens is opaque, the images are increasingly weakened on their way, and even screened out in the most advanced cases of cataract. (alfaintes.it)
It is pierced, behind, by the optic nerve, the entrance for which is funnel-shaped, wide behind and narrow in front, and is situated 3 mm. to the nasal side and slightly below the level of the posterior pole. (co.ma)
Ideal for optic nerve head examination as lens offers higher magnification near 1x. (reviewofoptometry.com)
Since the power of the optic dictates the magnification and field of view (see "Crunching the Numbers: Magnification and Field of View" ), different lenses have distinct characteristics, which allow the doctor to select the best lens per their preference and the specific task to be addressed. (reviewofoptometry.com)

The capsule is thinnest at the posterior pole with approximate thickness of 3.5μm. (wikipedia.org)

The lens capsule is the thickest basement membrane in the body. (wikipedia.org)
The lens capsule is a transparent membrane that surrounds the entire lens. (wikipedia.org)
Possible causes include excessively high refracting power of the crystalline lens or an overly long eyeball Myringitis Inflammation of the tympanic membrane Myringoplasty Closure of a perforation in the tympanic membrane using a fascia transplant Nasal Inwards, toward the nose Nasal bone Skull bone supporting the bone Nasal polyps Growths on the mucous membrane of the nose and paranasal sinuses. (mpdoctors.com)
The nu-cleus appeared to be tethered by a clear membrane consistent with a torn lens capsule that extended from behind the pupil. (aao.org)
its equator, while its posterior two-thirds are enveloped by a loose membrane termed the fascia bulbi (O.T. capsule of Tenon). (co.ma)
The sclera is a firm, opaque membrane, forming approximately the posterior five-sixths of the outer tunic. (co.ma)
The lens focuses light that passes into your eye, producing clear, sharp images on the retina - the light-sensitive membrane on the back inside wall of your eyeball that functions like the film of a camera. (prashantsrivastava.com)

Because multifocal intraocular lenses are highly functional, precise surgery and examination are required, and depending on the patient's eyes, personality and life, it may be worse than monofocal intraocular lenses. (miyoshi-eye-clinic.com)
For lens replacement, we provide monofocal intraocular lenses (IOLs), toric IOLs for astigmatism, and multifocal IOLs for enhanced eyesight at any distance. (brobergeyecare.com)

Two types of intraocular lenses (IOLs) are mainly used in hyperopes: the precrystalline lens implant (implantable Collamer lens) and the iris-fixated lens (Artisan lens). (medscape.com)
In order for accommodating IOLs to have a future in cataract surgery and presbyopia correction, we must determine, once and for all, the best location for these lenses. (crstodayeurope.com)
Our ultra-precise surgical techniques, along with biocompatible technology like intraocular lenses (IOLs), have helped patients throughout the Austin area to overcome this common degenerative disease. (brobergeyecare.com)

In almost all surgeries, an artificial intraocular lens (IOL) replaces the natural lens. (healthnews.com)
The result is the natural lens tissue is emulsified. (healthnews.com)
The natural lens is manually removed. (healthnews.com)
An ocular cataract is the clouding of the natural lens of the eye, which causes considerable loss of vision, especially in people over 40 years of age. (scopeheal.com)

Yellowish or brown coloration of the central portion of the lens on biomicroscopy. (icrcat.com)

This occurs because of migration, expansion, and also differentiation of lens epithelial cells (LECS). (withink1.us)
Increasing attention is now being directed at the network of signaling pathways that effect the EMT in lens epithelial cells, with the aim of identifying potential therapeutic targets to inhibit cataract, particularly PCO, which remains a significant clinical problem in ophthalmology. (nih.gov)
The lens is an epithelial structure as it is derived from primitive ectoderm. (medscape.com)

Refractive corneal surgery had the potential to rival the visual results of phakic lens implants, as it can correct both the spherical error and the cylindrical error. (medscape.com)
Apart from accuracy in calculating the refractive correction, selection of the appropriate size of the ICL is crucial in achieving a desirable outcome since most postoperative complications associated with this surgery are related to suboptimal lens sizing. (biomedcentral.com)
All refractive procedures, including prescription of spectacles, corneal refractive procedures and lens extraction, should be deferred until normalisation of BGL in phakic and pseudophakic PDM, as higher sugar levels affect corneal curvature and thickness and overall vision. (avehjournal.org)

In intra-capsular cataract extraction (ICCE), whole lens including the anterior part of the capsule is removed. (wikipedia.org)
Absence of the crystalline lens resulting from cataract extraction. (lookformedical.com)
Presence of an intraocular lens after cataract extraction. (lookformedical.com)

Radiated opacities in the periphery of the lens that expand to encompass the anterior and posterior portions. (icrcat.com)
On the other hand, a cortical cataract begins at the periphery of the lens and spreads toward the center. (scopeheal.com)

To compare the measurements obtained from the Orbscan II, IOLMaster 700, Pentacam AXL, and Castroviejo caliper and their effects on calculating the recommended implantable collamer lens (ICL) size and postoperative vault measurements. (biomedcentral.com)

Lens-induced uveitis may develop, and the degree of intraocular inflammation in these patients often is governed by the size of the retained lens fragment, the time since cataract surgery, the patient's individual inflammatory response, and the extent of other intraocular manipulations. (medscape.com)
These fragment the opaque crystalline through a microincision, with minimum trauma for the patient. (camospa.it)
An ultrasonic probe is used to fragment the opacified crystalline lens, and the resulting material is extracted through a minimal incision using a suction system always under the control of the surgeon. (scopeheal.com)

Lens proteins are most likely immunologically privileged, and they may initiate an immunologic sensitization only after entering the aqueous humor. (medscape.com)

Eye phenotype and lens histology and ultrastructure were analyzed in adult mice. (molvis.org)

The lens is resistant to damage caused by YAG laser and eliminates the need for ridges of any kind on the surface of the lens which has previously been used to keep the lens off the posterior capsule of the crystalline lens. (justia.com)
The opacities are located near the posterior surface of the lens and often form a plaque. (icrcat.com)

Sometimes a rigid polymethyl methacrylate or PMMA lens is used which is rigid and requires a larger incision. (healthnews.com)

We pondered what would cause anterior lens dislocation this late after trauma. (aao.org)

Continuous curvilinear capsulorhexis is the most widely used due to its numerous advantages that facilitate stabilization and centering of the intraocular lens. (scopeheal.com)

This privilege is probably because of numerous factors, as follows: lens proteins are isolated from the fetal circulation early in embryonic life, the lens is devoid of innervation, and the adult lens is completely avascular. (medscape.com)

The disclosed lens is a synthetic sapphire lens having either a silicone or polyimide haptic thereby making the lens autoclavable. (justia.com)

In a phase 3 clinical study evaluating the AcrySof Toric IOL, 94 of patients implanted with the lens (n = 37) achieved a distance UCVA of 20/40 or better. (crstoday.com)
1 The study also evaluated the rotational stability of the lens, which of course is crucial to the effectiveness of a toric design. (crstoday.com)
One important key to my success with this lens is using the online AcrySof Toric IOL Calculator ( www.acrysoftoriccalculator.com ) that the manufacturer provides. (crstoday.com)
The Toric intraocular lens, instead of the lens cloudy in cataract surgery, intraocular lens to be implanted one of the, correct astigmatism you can. (miyoshi-eye-clinic.com)

Visualization of the posterior segment is critical to performing pars plana vitrectomy. (eyewiki.org)
Injuries affecting the posterior segment have been considered as a major impact on raptor vision. (spie.org)
Hence, in vivo examination of the structure of the posterior segment of the raptors would be helpful for the diagnosis of traumatized birds. (spie.org)

Jan Worst, the designer of the lens, considers the peripheral part of the iris as a silent area. (medscape.com)
The final step of the surgery is to use a dual irrigation-aspiration (I-A) probe or a bimanual I-A system to remove any remaining lens or peripheral material. (healthnews.com)

If medical therapy fails, future options include scleral contact lenses, keratolimbal allograft, or keratoprosthesis. (uiowa.edu)

The ligaments suspending the lens form attachments in the equatorial area and more so just to the front and back of the equator. (wikipedia.org)
There are tens of thousands of these ligaments in a mouse lens and for the most part they appear to connect directly to the lens capsule. (wikipedia.org)
A sheet or band of tough, inelastic, fibrous connective tissue.Around joints, ligaments form a cuff or 'capsule', along with additional strengthening bands outside it (e.g. (montserrat-flights.com)
See: The collective term for the medial ankle ligaments, formed by the anterior tibiotalar, tibionavicular, tibiocalcaneal, and posterior tibiotalar ligaments. (montserrat-flights.com)

Aging can cause the proteins in your eye to clump together, clouding a portion of the lens. (brobergeyecare.com)
It is a cataract-removal surgery that involves removing the front portion of the lens from the eye while retaining the posterior capsule. (scopeheal.com)

With the support of ultrasound, the crystalline lens is fragmented (emulsified) and aspirated for cleaning the area. (scopeheal.com)

The dimensions of the Artisan phakic lens. (medscape.com)
Explantation of the phakic lens may ameliorate some of the complications. (medscape.com)

Retropupillaire fixatie maakt een gemakkelijke en snelle procedure mogelijk. (ophtec.com)

Anatomy21

Organisms3

Diseases17

Chemicals and Drugs17

Analytical, Diagnostic and Therapeutic Techniques and Equipment28

Psychiatry and Psychology1

Phenomena and Processes9

Technology, Industry, Agriculture4

Health Care4

Opacification8

Rupture4

Implantation9

Epithelium5

Subcapsular1

Vitreous7

Nucleus6

Zonular3

Cornea8

Cataracts6

Human crystalline lens3

Phacoemulsification3

Chamber7

Anterior capsule1

Capsular bag3

Ciliary body1

Opaque posterior1

Cortex2

Fibers4

Elastic1

Artificial lens3

Cataractous3

Nuclear cataract1

Optic5

Pole1

Membrane7

Monofocal intraocular lenses2

IOLs3

Natural lens4

Biomicroscopy1

Epithelial3

Refractive3

Cataract extraction3

Periphery of the lens2

Implantable Collamer lens1

Fragment3

Aqueous1

Histology1

Surface of the lens2

Incision1

Dislocation1

Capsulorhexis1

Embryonic1

Haptic1

Toric4

Segment3

Peripheral2

Scleral1

Ligaments4

Portion of the lens2

Ultrasound1

Phakic lens2

Procedure1