Lens Subluxation
Dislocations
Retained intravitreal lens fragments after phacoemulsification: a clinicopathological correlation. (1/65)
AIMS: To explore the relation between clinical course and timing of vitrectomy with the nature and intensity of intraocular inflammatory response in eyes with retained intravitreal lens fragments following complicated phacoemulsification. METHODS: Prospective evaluation of 22 eyes with retained lens fragments with emphasis on corneal clarity, uveitis, intraocular pressure (IOP), timing of vitrectomy, and visual outcome. Numbers of different types of inflammatory cells in vitreous washings were counted, masked to clinical details, in three non-overlapping adjacent high power fields. Relations between clinical and pathological findings were assessed. RESULTS: The IOP was raised in 19 eyes before vitrectomy and remained high in nine postoperatively. The latter had higher median total cell count (104 cells/mm(2)) than those with normal postoperative IOP (37 cells/mm(2)) but this difference was not statistically significantly different (p=0.17). Nine of 22 eyes underwent vitrectomy within 1 week of cataract surgery. Median total cell count in these eyes was 20 cells/mm(2) compared with 140 cells/mm(2) in eyes vitrectomised later-this difference was statistically significant (p <0.001). Final visual acuity was 6/12 or better in 13 eyes, these had fewer intravitreal inflammatory cells than the remaining six with poor visual outcome and no pre-existing cause for this (three patients excluded) (p=0.02). Macrophages were the predominant inflammatory cell type. CONCLUSION: There was significantly less inflammatory cell activity in eyes which had retained lens fragments removed early (within 1 week). Later removal was associated with persistently elevated IOP and poorer visual outcome. (+info)Incidence and management of posteriorly dislocated nuclear fragments following phacoemulsification. (2/65)
PURPOSE: To report the incidence, management and complications of nucleus dislocation into the vitreous during phacoemulsification. METHODS: Retrospective review of 1250 consecutive phacoemulsification performed by consultants and residents in a teaching hospital. RESULTS: The incidence of nucleus drops was 0.8% (10 out of 1250). Loss of nuclear fragments occurred during phacoemulsification in 9 patients. In one, the dislocation was caused by hydro-dissection. All except one patient (who refused further intervention) underwent pars plana vitrectomy with removal of nuclear fragments. Eight of them had intraocular lens (IOL) inserted at the time of cataract surgery or at vitrectomy; one patient was scheduled for a secondary IOL. Postoperative best corrected visual acuity ranged from 6/24-6/6; 8 patients achieved a vision of 6/12 or better. Complications included cystoid macular oedema (5 patients), retinal break (1 patient) and retinal detachment (1 patient). CONCLUSION: Appropriate management of posteriorly dislocated nucleus can restore good visual acuity. The use of phacoemulsification mandates availability of referral facilities for management of complications. (+info)DeltaFosB-induced cataract. (3/65)
PURPOSE: The objective of this study was to investigate a possible relationship between posterior subcapsular cataract (PSC) formation and expression of the transcription factor DeltaFosB. METHODS: Western blot analysis was performed on bitransgenic NSE-tTA, TetOp-DeltaFosB, and single-transgenic NSE-tTA control mice to determine the pattern of DeltaFosB expression within the eye. Light and scanning electron microscopy and biochemical analyses were also performed. RESULTS: In mice expressing DeltaFosB, cataract developed that initially appeared to be posterior subcapsular and gradually matured to involve the entire lens. The enlarged posterior ends of developing secondary fibers curved away from the visual axis to form an elevated opaque posterior plaque. As a result, posterior suture formation did not occur. At a later time, the attenuated posterior capsule overlying the plaque ruptured and the lens nucleus subluxated into the vitreous. Retinal damage was also observed but only from postnatal day 65, a time when extensive lens degeneration had already occurred. DeltaFosB expression was observed well before the detection of morphologic change in both the lens and the retina. Within the lens, DeltaFosB expression was found in both the epithelium and fibers. The development of cataracts was a direct consequence of DeltaFosB expression and was not due to the disruption of an endogenous gene by transgene integration since cataracts could be prevented by silencing expression of DeltaFosB by feeding bitransgenic animals doxycycline (Dox). Moreover, cataracts were observed in bitransgenic mice derived from two independent TetOp-DeltaFosB founder lines but not in single NSE-tTA transgenic controls. Cataractogenesis was not a consequence of abnormal development, because mice conceived and raised on Dox to prevent expression of DeltaFosB also were subject to formation of PSC when expression of DeltaFosB was turned on in adult animals by removing Dox. Examination of biochemical parameters indicated that the earliest change observed was the disruption of calcium homeostasis with a significant increase in Ca(2+) influx, followed by a gradual but marked decrease in protein content. Significant changes in certain metabolic parameters and protein composition were also observed. CONCLUSIONS: The DeltaFosB-induced cataract in which the major morphologic early event was the disruption of normal posterior fiber formation, may be a good model for PSC. By identifying DeltaFosB-regulated target genes, it should be possible to achieve a better understanding of the molecular mechanisms through which PSC is formed. (+info)Combined pars plana lensectomy-vitrectomy with open-loop flexible anterior chamber intraocular lens (AC IOL) implantation for subluxated lenses. (4/65)
OBJECTIVES: To review our experience with combined pars plana lensectomy-vitrectomy and open-loop flexible anterior chamber intraocular lens (AC IOL) implantation for managing subluxated crystalline lenses. METHODS: Retrospective review of 36 consecutive eyes (28 patients), all of which had subluxated crystalline lenses, managed by pars plana lensectomy-vitrectomy with insertion of an open-loop flexible AC IOL. The study was performed at the Medical College of Wisconsin, Milwaukee, over an 8-year period. RESULTS: An average preoperative visual acuity of 20/163 (range, 20/25 to hand motions) improved to 20/36 (range, 20/20 to 4/200) with surgery after a mean follow-up of 14 months (range, 1 to 59 months) (P < .001, Student's paired t test). Final visual acuity of 20/40 or better was achieved in 75% of eyes (27/36). Complications included cystoid macular edema (8% [3/36]), pupillary block (6% [2/36]), retinal detachment (3% [1/36]), hyphema (3% [1/36]), wound leak (3% [1/36]), and transient vitreous hemorrhage (3% [1/36]). No persistent ocular hypertension was seen, nor did angle abnormalities or corneal decompensation develop. CONCLUSIONS: Pars plana lensectomy-vitrectomy with AC IOL implantation appears to be an excellent technique for managing subluxated crystalline lenses. It is associated with a significant improvement in visual acuity (P < .001) and avoids many of the complications seen with extraction of a subluxated lens through a limbal wound. Additionally, use of an AC IOL offers a simplified alternative to placement of a ciliary sulcus sutured posterior chamber intraocular lens (PC IOL). (+info)Results of vitrectomy performed at the time of phacoemulsification complicated by intravitreal lens fragments. (5/65)
AIM: To evaluate outcome of vitrectomy performed at the time of phacoemulsification complicated by intravitreal lens material. METHODS: Clinical records associated with consecutive 8536 phacoemulsification procedures were reviewed retrospectively. RESULTS: 17 (0.20%) eyes had a posterior capsule rupture with retained lens material in the vitreous cavity that required vitrectomy. Final visual acuity was 0.5 or better in 14 eyes (82%) and 0.4 to 0.1 in three eyes (18%). Retinal detachment occurred in one eye during vitrectomy and two after the surgery. Cystoid macular oedema was observed in two eyes and none developed glaucoma. The corneal endothelial cell loss was 5.7% (SD 6.8 %) (n=15) at 3-6 months postoperatively. CONCLUSIONS: Combined vitrectomy and intraocular lens implantation at the time of phacoemulsification complicated by intravitreal lens material is an option to be considered to reduce the risk of postoperative complications including secondary glaucoma and corneal endothelial cell damage. (+info)Five cases of microphthalmia with other ocular malformations. (6/65)
We report five cases of complex microphthalmia with other ocular malformations in infants or children, which were evaluated to investigate the relationship between the corneal diameters and total axial length. The size of the globe was measured by using computerized tomographic scans (CT scan), A-scan ultrasonography, or magnetic resonance imaging (MRI). There is a limited range of well-described malformation, including anterior or posterior segment dysgenesis or combined pathology such as corneal opacity, small cornea, iris hypoplasia, lens dislocation, cataract, chorioretinal coloboma, persistent hyperplastic primary vitreous (PHPV), retinal dysplasia, and intraocular tumor. Corneal diameters were correlated significantly with total axial length (r2 = 0.88) and decreased linearly as the total axial length decreased in these cases. However, there was no relationship seen between the total axial length and posterior segment length (r2 = -0.06). The results of this study may aid the clinical ophthalmologist to accurately understand or assess microphthamia combined with other ocular malformations. (+info)Ocular injuries due to projectile impacts. (7/65)
An animal model has been developed using enucleated porcine eyes to evaluate ocular trauma. The eyes were pressurized to approximately 18 mmHg and mounted in a container with a 10% gelatin mixture. The corneas of sixteen pressurized eyes were impacted by a blunt metal projectile (mass of 2.6 gm, 3.5 gm or 45.5 gm) at velocities of 4.0 to 38.1 m/s. The impacted eyes were evaluated by an ophthalmologist. A numerical classification scheme was used to categorize the severity of the ocular injury. A chi-squared test indicates that the injury level is associated with the kinetic energy (KE) and not the momentum of the projectile. The enucleated eyes began to experience lens dislocations when the KE of the projectile was approximately 0.75 Nm, and retinal injuries when the KE was approximately 1.20 Nm. (+info)Phacofragmentation for the treatment of a completely posterior dislocation of the total crystalline lens. (8/65)
In order to evaluate the effectiveness and safety of intravitreal phacofragmentation, we analyzed cases of pars plana vitrectomy (PPV) with intravitreal phacofragmentation and scleral fixation of an intraocular lens (IOL) performed in patients with a crystalline lens completely dislocated into the vitreous cavity without any damage to the lens capsule. Of the 23 eyes examined, the dislocated lens was related with a hypermature cataract in 4 eyes and Marfan syndrome in 2 eyes, developed after argon and Nd:YAG laser iridotomy in 2 eyes, and was due to ocular trauma in 15 eyes. The dislocated lens was present for more than a year in 6 eyes and less than 4 weeks in 13 eyes. PPV, intravitreal phacofragmentation and scleral fixation of IOL were performed in all 23 eyes. Additionally, trabeculectomy was performed in 4 eyes, iridoplasty in 1 eye and cryopexy with intravitreal injection of sulfur hexafluoride in 2 eyes. Perfluorocarbon liquid was used in 9 eyes. The mean follow-up period was 11.7 months. On final examination, the visual acuity was better than 20/40 in 17 eyes (73.9%) and counting fingers in 1 eye due to traumatic optic neuropathy. There was no postoperative retinal detachment. These results demonstrated that PPV with intravitreal phacofragmentation and other combined procedures is a safe and effective surgical method for treating a completely dislocated crystalline lens. (+info)Lens subluxation, also known as lens dislocation or ectopia lentis, is a condition where the lens of the eye becomes partially or completely displaced from its normal position. The lens is held in place by tiny fibers called zonules, which can become weakened or broken due to various reasons such as genetic disorders (like Marfan syndrome, homocystinuria, and Weill-Marchesani syndrome), trauma, inflammation, or cataract surgery complications. This displacement can lead to symptoms like blurry vision, double vision, sensitivity to light, or the appearance of a shadow in the peripheral vision. In some cases, lens subluxation may not cause any noticeable symptoms and can be discovered during routine eye examinations. Treatment options depend on the severity and underlying cause of the subluxation and may include eyeglasses, contact lenses, or surgical intervention to remove and replace the displaced lens with an intraocular lens (IOL).
A dislocation is a condition in which a bone slips out of its normal position in a joint. This can happen as a result of trauma or injury, such as a fall or direct blow to the body. Dislocations can cause pain, swelling, and limited mobility in the affected area. In some cases, a dislocation may also damage surrounding tissues, such as ligaments, tendons, and nerves.
Dislocations are typically treated by reducing the dislocation, which means putting the bone back into its normal position. This is usually done with the help of medication to relieve pain and relaxation techniques to help the person stay still during the reduction. In some cases, surgery may be necessary to repair damaged tissues or if the dislocation cannot be reduced through other methods. After the dislocation has been reduced, the joint may be immobilized with a splint or sling to allow it to heal properly.
It is important to seek medical attention promptly if you suspect that you have a dislocation. If left untreated, a dislocation can lead to further complications, such as joint instability and chronic pain.
The atlanto-axial joint is the joint between the first and second cervical vertebrae, also known as C1 (atlas) and C2 (axis). It consists of two separate joints: the median atlanto-axial joint, which is a pivot joint that allows for rotation of the head, and the paired lateral atlanto-axial joints, which are plane joints that allow for limited gliding movements.
The atlanto-axial joint is surrounded by several ligaments that provide stability and limit excessive movement. The transverse ligament, located on the anterior aspect of the joint, is particularly important as it prevents excessive movement of the atlas on the axis and helps to protect the spinal cord.
Abnormalities or injuries to the atlanto-axial joint can result in instability and potentially serious neurological complications.
Aphakia
Marfan syndrome
Ectopia lentis
Diktyoma
Iridodonesis
Subluxation
Vitreomacular adhesion
Lens induced glaucomas
Ciliary body melanoma
Toftness device
Uveitis-glaucoma-hyphema syndrome
Glued intraocular lens
Glaucoma
Diplopia
Zonule of Zinn
Homocystinuria
Phacodonesis
Ehlers-Danlos syndromes
List of MeSH codes (C11)
Cataract surgery
List of syndromes
Index of anatomy articles
Bilateral Subluxation of Microspherophakic Lens in a Child with Cohen Syndrome - PubMed
Lens Subluxation | Profiles RNS
Subluxation of Lens - Retina Image Bank
Difference Between Subluxation And Dislocation Of Lens
Ciliary Body Melanoma: Overview, Pathophysiology, Etiology
Isolated ectopia lentis: MedlinePlus Genetics
February 2001 - Volume 27 - Issue 2 : Journal of Cataract & Refractive Surgery
Eyelid Coloboma Clinical Presentation: History, Physical, Causes
The influence of capsular tension ring on post-operation refraction in lens subluxation patients combined with high myopia
2020-2021 BCSC Basic and Clinical Science Course™
Aphakia - Wikipedia
Isolated ectopia lentis: MedlinePlus Genetics
Zika virus disease - About the Disease - Genetic and Rare Diseases Information Center
Ivermectin - Rat Guide
Juvenile Glaucoma: Background, Pathophysiology, Epidemiology
Megalocornea Workup: Other Tests, Histologic Findings
Reindeer Warble Fly-associated Human Myiasis, Scandinavia - Volume 19, Number 5-May 2013 - Emerging Infectious Diseases journal...
Biomarkers Search
Molecular Vision: Identification of a novel FBN1 gene mutation in a large Pakistani family with Marfan syndrome
Congenital Contractural Arachnodactyly - GeneReviews® - NCBI Bookshelf
Conditions of the Lens - WSAVA 2003 Congress - VIN
Onchocerciasis (River Blindness) - Infectious Diseases - Merck Manuals Professional Edition
Ultrasound biomicroscopy of the iridocorneal angle of the eye before and after phacoemulsification and intraocular lens...
Paintball Accidents Attorney | Liability for Paintball Accidents - Downtown LA Law Group
Methionine Metabolism Disorders - Pediatrics - MSD Manual Professional Edition
Wildervanck Syndrome - Symptoms, Causes, Treatment | NORD
Marfan Syndrome - American Association for Pediatric Ophthalmology and Strabismus
This Is Not Conjunctivitis - WSAVA 2003 Congress - VIN
GMS | GMS German Medical Science - an Interdisciplinary Journal | Internal limiting membrane peeling in macular hole surgery
MeSH Browser
Glaucoma4
- One year efficacy of combined surgical approaches in the treatment of secondary glaucoma due to lens subluxation [J]. Ophthalmology in China, 2015, 24(4): 250-253. (j-bio.net)
- Congenital megalocornea with zonular weakness and childhood lens-related secondary glaucoma - a distinct phenotype caused by recessive LTBP2 mutations. (medscape.com)
- Other eye problems in Marfan syndrome include ectopia lentis (see below), corneal thinning, flattened cornea, cataracts (cloudy spot in the lens) , glaucoma (high eye pressure) , strabismus (eye movement problems) , and retinal detachment (where the inner lining of the back wall of the eye falls off). (aapos.org)
- Primary Lens Luxation can lead to inflammation and Glaucoma. (jrthealthregistry.com)
Congenital4
- Outcome of two IOL implantation options for congenital subluxation of the lens: CTR with IOL vs. PPL with sclera-sutured IOL [J]. Ophthalmology in China, 2015, 24(1): 47-50. (j-bio.net)
- Aphakia is the absence of the lens of the eye, due to surgical removal, such as in cataract surgery, a perforating wound or ulcer, or congenital anomaly. (wikipedia.org)
- Spontaneous traumatic absorption or congenital absence of lens matter is rare. (wikipedia.org)
- As an example he sites[sic] the case of Marfan's disease, or arachnodactyly, in which a single dominant pleiotropic gene is responsible for the subluxation of the lens, the characteristic elongated body build, congenital heart disease, etc. (nih.gov)
Ectopia Lentis8
- Isolated ectopia lentis is a condition that affects the eyes, specifically the positioning of the lens. (medlineplus.gov)
- In people with isolated ectopia lentis, the lens in one or both eyes is not centrally positioned as it should be but is off-center (displaced). (medlineplus.gov)
- The displaced lens cannot focus light correctly, contributing to the vision problems that are common in people with isolated ectopia lentis. (medlineplus.gov)
- Ectopia lentis is characterized by the dislocation of the lens, which typically occurs in patients between birth and 20 years of age after that lens is stabilized. (molvis.org)
- Many patients develop ectopia lentis (lens subluxation), intellectual disability, and osteoporosis. (msdmanuals.com)
- Some of the more common problems in people with Marfan syndrome are ectopia lentis (when the lens of the eye is not in the right spot, discussed later), aortic dissection (a large artery in the body has a weakness in its wall), family history of Marfan syndrome, and genetic testing showing the abnormal FBN1 gene. (aapos.org)
- Subluxated lens (ectopia lentis). (aapos.org)
- Ectopia lentis is when the lens inside the eye is not in the right spot, it is also called lens subluxation or lens dislocation. (aapos.org)
Aphakia5
- Surgical removal of a lens, mainly in cataract surgery, is the most common cause of aphakia. (wikipedia.org)
- Loss of accommodation: Since the lens and its zonules are responsible for adjusting the focus of vision to different lengths, patients with aphakia will have a total loss of accommodation. (wikipedia.org)
- Retinal detachment Aphakic bullous keratopathy Aphakia can be corrected by wearing glasses or contact lenses, by artificial lens implantation, or by refractive corneal surgeries. (wikipedia.org)
- cite book}}: CS1 maint: others (link) aphakia at Wiktionary https://en.wiktionary.org/wiki/aphakia aphakia. (wikipedia.org)
- Bilateral Artisan lens for aphakia and megalocornea: Long-term follow-up. (medscape.com)
Vertebral subluxation2
- Here at Spinal Research, we recently launched our strategic goal - a bold pledge to facilitate $1,000,000 in vertebral subluxation research in the next five years. (spinalresearch.com.au)
- We acknowledge the devastating effects of the vertebral subluxation on human health and therefore recognize that the spines of all children need to be checked soon after birth, so they may grow up healthy. (getbetterhealth.com)
Vitreous6
- In dislocation, or complete rupture, the lens is displaced forward into the anterior chamber or backward into the vitreous body. (ouhsc.edu)
- it produces aqueous humor, facilitates trabecular outflow, intervenes in alteration of the shape of the crystalline lens during accommodation, and secretes hyaluronic acid into the vitreous. (medscape.com)
- Severe trauma leads to lens subluxation, retinal dialysis, optic nerve avulsion, and/or vitreous hemorrhage. (aao.org)
- Abnormalities of the zonular fibers that normally hold the lens in position may occur, resulting in luxation of the lens from its normal position into the anterior chamber or into the vitreous humor. (vin.com)
- The lens is seated in the patellar fossa, a shallow depression in the vitreous body. (vin.com)
- In cases of lens subluxation a little "cloud" of vitreous may be seen leaking into the anterior chamber between the iris and lens. (vin.com)
Myopia5
- Affected individuals often have nearsightedness (myopia) and can have an irregular curvature of the lens or a structure that covers the front of the eye (the cornea), which causes blurred vision (astigmatism). (medlineplus.gov)
- Objective To research the influence of capsular tension ring (CTR) on post-operation refraction in lens subluxation patients combined with high myopia. (j-bio.net)
- Conclusion Capsular tension ring implantation had no significant effect on refractive error in lens subluxation patients combined with high myopia. (j-bio.net)
- Clinical research on the implantation of posterior chamber phakic intraocular lens for high myopia [J]. Ophthalmology in China, 2012, 21(6): 390-394. (j-bio.net)
- Safety analysis of the implantation of posterior chamber phakic intraocular lens for high myopia [J]. Ophthalmology in China, 2011, 20(6): 396-400. (j-bio.net)
Corneal1
- Traumatic hyphema is frequently associated with corneal abrasion, anterior uveitis, and mydriasis, as well as with simultaneous injuries to the angle structures, lens, posterior segment, and orbit. (aao.org)
Astigmatism1
- Growth of the melanoma into the lens may produce its subluxation, lenticular astigmatism, or cataract. (medscape.com)
Bilateral2
- Here, we present the first documented case of a 5-year-old Amish child with Cohen Syndrome who presented with bilateral subluxation of microspherophakic lenses - rare findings themselves, let alone coexisting in a patient with a rare genetic syndrome. (nih.gov)
- but individuals with bilateral dislocated lenses will often have an underlying genetic cause. (teach-kids-attitude-1st.com)
Cataracts1
- Cataracts caused by blunt trauma classically form stellate- or rosette-shaped posterior axial opacities that may be stable or progressive, whereas penetrating trauma with disruption of the lens capsule forms cortical changes that may remain focal if small or may progress rapidly to total cortical opacification. (medscape.com)
Trauma4
- A single dislocated lens may result from trauma. (teach-kids-attitude-1st.com)
- Trauma causes posterior displacement of the lens-iris interface with equatorial scleral expansion. (aao.org)
- Spontaneous hyphema (ie, a hyphema that occurs without any history of trauma) is much less common and should alert the examiner to the possibility of rubeosis iridis (mainly central retinal vein obstruction and diabetic retinopathy), clotting abnormalities, herpetic disease, or intraocular lens (IOL) problems. (aao.org)
- Penetrating trauma that directly compromises the lens capsule leads to cortical opacification at the site of injury. (medscape.com)
Hypermetropia1
- Hypermetropia: Without the focusing power of the lens, the eye becomes very farsighted. (wikipedia.org)
Crystalline1
- Management Of Traumatic Crystalline Lens Subluxation And Dislocation. (teach-kids-attitude-1st.com)
Pupillary2
- tn When the lens is displaced but remains in the pupillary area. (teach-kids-attitude-1st.com)
- Zonular fibers extend from the ciliary body to the anterior and posterior capsule circumferentially near the equator and suspend the lens in the pupillary axis. (vin.com)
Abnormalities3
- Abnormalities of the lens are frequently detected during the ophthalmic examination. (vin.com)
- A number of defects in methionine metabolism lead to accumulation of homocysteine (and its dimer, homocystine) with adverse effects including thrombotic tendency, lens dislocation, and central nervous system and skeletal abnormalities. (msdmanuals.com)
- See What the Eyes Tell You: 16 Abnormalities of the Lens , a Critical Images slideshow, to help recognize lens abnormalities that are clues to various conditions and diseases. (medscape.com)
Zonules3
- The zonules are fibers that extend from the ciliary body to hold the lens in position. (teach-kids-attitude-1st.com)
- This movement of the lens is caused by weakness in the connective tissue that holds the lens in place (zonules). (aapos.org)
- This equatorial stretching can disrupt the lens capsule, zonules, or both. (medscape.com)
Dialysis1
- Zonulopathy is a condition where zonular support for the lens capsule is lacking as a result of zonular dialysis or weakness. (eyepatient.net)
Iris3
- Blunt force applied to the eye displaces the aqueous volume peripherally, causing an increase in hydraulic pressure at the lens, iris root, and trabecular meshwork. (aao.org)
- Siepser slipknot for McCannel iris-suture fixation of subluxated intraocular lenses. (medscape.com)
- It is responsible for Vossius ring (imprinted iris pigment) sometimes found on the anterior lens capsule following blunt injury. (medscape.com)
MeSH1
- Lens Subluxation" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings) . (ouhsc.edu)
Partial1
- Subluxation is the partial (100%) loss of articular congruity. (teach-kids-attitude-1st.com)
Capsule12
- Cataract (opacity of the lens or its capsule) is the most common disorder of the lens that occurs in domesticated animals. (vin.com)
- The lens is a transparent, biconvex structure that consists of a capsule surrounding the lens proper. (vin.com)
- The lens capsule consists of anterior and posterior parts that meet at the equator. (vin.com)
- The lens epithelium is located beneath the anterior lens capsule. (vin.com)
- Lens cortex apposes the lens epithelium anteriorly ( anterior cortex ) and the lens capsule posteriorly ( posterior cortex ). (vin.com)
- A cataract is an opacity of the lens or its capsule. (vin.com)
- Capsular-- opacity confined to the lens capsule. (vin.com)
- Subcapsular --most of opacity involves cortex directly beneath lens capsule. (vin.com)
- the 2 hyperechoic thin linear structures represent the lens capsule, and the thick echogenic curvilinear structure represents the cataract. (avma.org)
- The goal of surgery is to ensure the integrity of the remaining zonular fibers is preserved to stabilize the lens capsule for better long-term visual outcomes. (eyepatient.net)
- Treatment is aimed at preserving the integrity of the remaining zonular fibers so that they can support the lens capsule during cataract surgery. (eyepatient.net)
- To make lens rotation easier in the event of zonular weakness, the surgeon can use a bimanual technique to reduce the force placed on the capsule. (eyepatient.net)
Traumatic2
- Traumatic subluxation or dislocation of a lens may cause it. (wikipedia.org)
- Lens dislocation and subluxation are commonly found in conjunction with traumatic cataract. (medscape.com)
Axial1
- Anterior/Posterior-- used to describe opacities of the capsular, subcapsular, polar/axial, and cortical areas of the lens. (vin.com)
Ophthalmology5
- Comparative study of angle changes after implantable collamer lens with or without center hole implantatione [J]. Ophthalmology in China, 2017, 26(6): 393-396. (j-bio.net)
- Second stage fixed to the ciliary sulcus of common capsular tension ring for moderate and severe lens subluxation [J]. Ophthalmology in China, 2016, 25(2): 76-81. (j-bio.net)
- The efficiency and necessity of phakic intraocular lens implantation [J]. Ophthalmology in China, 2013, 22(2): 80-81. (j-bio.net)
- Application of non-perfusion anterior vitrectomy in the lens subluxation surgery [J]. Ophthalmology in China, 2012, 21(2): 90-92. (j-bio.net)
- Capsular hooks and modified capsular tension rings for moderate-severe lens subluxation [J]. Ophthalmology in China, 2012, 21(1): 52-55. (j-bio.net)
Diseases1
- A ten year old male presenting with joint hypermobility, lens subluxation, elevated hepatic transaminases and generalized lipodystrophy with abnormal body weight was evaluated at the National Institutes of Health Undiagnosed Diseases Program (UDP). (nih.gov)
Phakic1
- gt;This article presents two cases of phakic refractive lens (PRL) complications in China. (uwi.edu)
Capsular4
- 1 To my mind, late subluxation of the IOL-capsular bag complex qualifies as an epidemic except that its prevalence has risen over decades with the universal adoption of the continuous curvilinear capsulorhexis (CCC) instead of suddenly. (crstodayeurope.com)
- Subluxation of the IOL-capsular bag complex, however, has been reported with every IOL material when the lens is placed in the bag. (crstodayeurope.com)
- If there are more than 3 clock hours of zonulolysis, if the lens does not center well, or if pseudophacodonesis is suspected, I fixate the IOL to the sclera using an Ahmed Capsular Tension Segment (Morcher) and an 8-0 PTFE suture (GoreTex, W.L. Gore & Associates). (crstodayeurope.com)
- The procedure aims to mobilize the lens inside the capsular bag to minimize zonular fiber stress when the surgeon rotates the lens and disassembles the nucleus. (eyepatient.net)
Refractive index2
- The refractive index of the denser portion of the lens is increased. (vin.com)
- Due to decrease in refractive index of lens in old age due to cortical sclerosis. (medical-junction.com)
Implantation1
- Likewise, with zonulopathy, intraocular lens (IOL) implantation and lens fragmentation can make cataract surgery more challenging. (eyepatient.net)
Displacement1
- Whereas alveolar bone resorption prevailed in intrusion cases and root canal obliteration in concussion/ subluxation cases, tooth displacement occurred most often in intrusion and lateral luxation/extrusion cases. (bvsalud.org)
Patients1
- The younger patients are, the more likely they are to live long enough to experience subluxation of the IOL. (crstodayeurope.com)
Cortical2
- Cortical-- opacity of the lens cortex (may be anterior or posterior cortical). (vin.com)
- If the rent is sufficiently large, the entire lens rapidly opacifies, but when small, cortical cataract can seal itself off and remain localized. (medscape.com)
Commonly1
- This imparts a grayish appearance to the lens of an old dog (nuclear sclerosis) and is commonly confused with lens opacity (cataract). (vin.com)
Phacoemulsification1
- The surgeon can use the 'cross chop' and 'double-chop' techniques to divide and remove the lens in nuclear fragmentation and phacoemulsification. (eyepatient.net)
Eyeglasses1
- They can be fitted into the frame or placed on top of other lenses in the eyeglasses. (eyecareoftexaspc.com)
Contact lens1
- The use of a three-mirror contact lens improves the optics observing the peripheral retina. (forextrading-madeeasy.com)
Cornea1
- These refractive errors (problems focusing due to a need for glasses) can be very large since the connective tissue problem may affect the cornea (clear covering in the front of the eye), lens (focusing part in the middle of the eye), and how long or short the eye is. (aapos.org)