Lens Capsule, Crystalline
Anterior Capsule of the Lens
Lens Implantation, Intraocular
Contact Lenses, Hydrophilic
Lens Cortex, Crystalline
Posterior Capsule of the Lens
Subrenal Capsule Assay
Diverse roles of Eph/ephrin signaling in the mouse lens. (1/3)(+info)
Integrin-linked kinase deletion in the developing lens leads to capsule rupture, impaired fiber migration and non-apoptotic epithelial cell death. (2/3)(+info)
Quantitative analysis of SOD2, ALDH1A1 and MGST1 messenger ribonucleic acid in anterior lens epithelium of patients with pseudoexfoliation syndrome. (3/3)PURPOSE: The aim of the study was to investigate the expression of selected genes encoding enzymes involved in the antioxidant defense system (superoxide dismutase 2, SOD2; aldehyde dehydrogenase 1, ALDH1A1; microsomal glutathione S-transferase 1, MGST1) in fragments of anterior lens capsules of patients with pseudoexfoliation syndrome (PEX). The specificity and sensitivity of these molecular markers for PEX development were also assessed. METHODS: The study group consisted of 20 patients (9 women and 11 men) with diagnosed PEX and cataract. The control group included 23 patients (8 women and 15 men) who needed cataract surgery but did not have PEX. Quantification of SOD2, ALDH1A1, and MGST1 messenger ribonucleic acid (mRNA) was performed with quantitative real-time PCR. RESULTS: SOD2, ALDH1A1, and MGST1 mRNAs were detected in all studied samples. The examined genes had statistically significant higher expression in the group of patients with PEX than in the control group (SOD2, p=0.0015; ALDH1A1, p=0.0001; MGST1, p=0.0001, Mann-Whitney U test). The areas under the curve (AUC) of SOD2, MGST1, and ALDH1A1 were 0.766, 0.818, and 0.957, respectively. CONCLUSIONS: Differential expression of SOD2, ALDH1A1, and MGST1 genes in the anterior lens capsules of patients with PEX suggest that diseased tissue appears to respond to the previously reported oxidative stress. A possible role of ALDH1A1 mRNA level as a risk factor or marker for PEX needs further confirmation. (+info)
The anterior capsule of the lens is a thin, transparent membrane that covers the anterior surface of the lens in the eye. It is a part of the lens capsule, which is a double-layered membrane that surrounds the lens and helps to maintain its shape. The anterior capsule is continuous with the posterior capsule, which is located on the posterior surface of the lens. The anterior capsule is important for maintaining the shape and stability of the lens, and it also plays a role in the process of accommodation, which is the ability of the eye to focus on objects at different distances. In some cases, the anterior capsule may become cloudy or thickened, which can interfere with vision and may require treatment.
In the medical field, "capsulorhexis" refers to the surgical procedure of making a circular opening in the anterior capsule of the lens of the eye. This is typically done during cataract surgery to remove the cloudy lens and replace it with an artificial one. The capsulorhexis is performed using a specialized surgical instrument called a capsulorhexis scissors or a capsulorhexis forceps. The size of the capsulorhexis opening is typically determined based on the size of the artificial lens that will be implanted. The capsulorhexis is an important step in cataract surgery, as it helps to ensure that the artificial lens is properly positioned and centered within the eye.
Lens diseases refer to a group of conditions that affect the lens of the eye. The lens is a transparent structure located behind the iris that focuses light onto the retina, allowing us to see clearly. Lens diseases can affect the structure, function, or both of the lens, leading to visual impairment or blindness. Some common types of lens diseases include: 1. Cataracts: A clouding of the lens that can cause vision loss. 2. Presbyopia: A natural age-related condition that causes difficulty in focusing on close objects. 3. Lens subluxation: A displacement of the lens from its normal position, which can cause vision problems. 4. Lens dislocation: A complete separation of the lens from its normal position, which can cause severe vision loss. 5. Lens luxation: A partial displacement of the lens from its normal position, which can also cause vision problems. 6. Lens opacities: A general term used to describe any clouding or opacity of the lens. 7. Lens subcapsular cataracts: A type of cataract that develops in the back of the lens. 8. Nuclear cataracts: A type of cataract that develops in the center of the lens. 9. Cortical cataracts: A type of cataract that develops on the surface of the lens. Lens diseases can be treated with medication, surgery, or a combination of both. Early detection and treatment are important to prevent vision loss or blindness.
A cataract is a clouding of the natural lens in the eye that affects vision. The lens is responsible for focusing light onto the retina, which is the light-sensitive tissue at the back of the eye. When the lens becomes cloudy, it can interfere with the ability of light to pass through and be focused properly, leading to vision problems. Cataracts are a common age-related condition, but they can also be caused by injury, disease, or certain medications. Symptoms of cataracts may include blurry vision, difficulty seeing at night, sensitivity to light, double vision, and the appearance of halos around lights. Treatment for cataracts typically involves surgery to remove the cloudy lens and replace it with an artificial lens. This procedure, called cataract surgery, is generally safe and effective, and can significantly improve vision in people with cataracts.
Cataract extraction is a surgical procedure to remove a cataract, which is a clouding of the natural lens in the eye. The cataract can cause vision loss and other complications, and cataract extraction is often the only effective treatment for this condition. During the procedure, the surgeon makes a small incision in the eye and removes the cloudy lens. The surgeon may then implant an artificial lens, called an intraocular lens (IOL), to replace the removed lens and improve vision. The IOL can be a permanent implant or can be removed at a later date if necessary. Cataract extraction is typically performed under local anesthesia, which numbs the eye and surrounding area. The procedure is usually quick and painless, and most people are able to return home the same day. After the procedure, patients may experience some discomfort, blurry vision, and sensitivity to light, but these symptoms usually improve within a few days to a week.
In the medical field, capsules are small, hollow, and usually spherical containers that are used to deliver medication or other substances to the body. Capsules are typically made of gelatin, but can also be made of other materials such as vegetable cellulose or hydroxypropyl methylcellulose (HPMC). There are two main types of capsules: hard capsules and soft capsules. Hard capsules are made of gelatin and are typically used to deliver solid or semi-solid medications. Soft capsules, on the other hand, are made of a softer material such as HPMC and are used to deliver liquid or semi-liquid medications. Capsules are often preferred over tablets because they are easier to swallow and may be more effective at delivering medication to the body. They are also less likely to cause stomach upset or other side effects. However, capsules may not be suitable for people with certain medical conditions or allergies to gelatin.
Acrylic resins are a type of polymer that are commonly used in the medical field for a variety of applications. They are typically made from acrylic acid or methacrylic acid, which are then polymerized to form a solid, durable material. One common use of acrylic resins in medicine is in the production of dental prosthetics, such as dentures and dental bridges. Acrylic resins are used to create the artificial teeth and gums that are used to replace missing teeth or to improve the appearance of the smile. Acrylic resins are also used in the production of medical devices, such as catheters and surgical instruments. They are often used because of their durability, flexibility, and ability to be molded into a variety of shapes and sizes. In addition, acrylic resins are sometimes used in the treatment of certain medical conditions. For example, they may be used to create implants for the treatment of joint disorders or to reinforce weakened bones. Overall, acrylic resins are a versatile and widely used material in the medical field, with a range of applications in dentistry, medical devices, and other areas.
Polymethyl Methacrylate (PMMA) is a synthetic polymer that is commonly used in the medical field for a variety of applications. It is a clear, hard, and durable material that is often used to make medical implants, such as hip and knee replacements, dental fillings, and dental crowns. PMMA is also used to make medical devices, such as surgical instruments and prosthetic devices. It is biocompatible, which means that it is generally well-tolerated by the body and does not cause an immune response. PMMA is also relatively easy to work with and can be shaped and molded into a variety of forms, making it a popular choice for medical applications.
Contact lenses are thin, transparent lenses that are placed directly on the surface of the eye to correct vision problems such as nearsightedness, farsightedness, and astigmatism. They are made of materials such as silicone hydrogel, hydrogel, or gas-permeable materials and come in various shapes and sizes to fit different eye shapes and prescriptions. Contact lenses can be worn on a daily, weekly, or monthly basis, and they can be disposable or reusable. They are a popular alternative to glasses for people who want to improve their vision and enhance their appearance. In the medical field, contact lenses are prescribed by eye care professionals, such as optometrists or ophthalmologists, and are fitted and monitored by trained technicians. Proper care and maintenance of contact lenses are essential to prevent eye infections and other complications.
Bacterial capsules are a protective layer that surrounds the cell wall of certain bacteria. The capsule is composed of polysaccharides, which are complex carbohydrates that provide a physical barrier against the host's immune system and other environmental stresses. The presence of a capsule can have significant implications for the pathogenicity of bacteria. Capsules can help bacteria evade the host's immune system by preventing antibodies and immune cells from binding to the bacterial surface. They can also help bacteria resist phagocytosis, a process by which immune cells engulf and destroy bacteria. Bacterial capsules are commonly found in pathogenic bacteria such as Streptococcus pneumoniae, Haemophilus influenzae, and Neisseria meningitidis. They are also found in some non-pathogenic bacteria, such as Escherichia coli and Salmonella. In the medical field, the presence of bacterial capsules is often studied in the context of infectious diseases. Understanding the role of bacterial capsules in pathogenesis can help researchers develop new strategies for preventing and treating infections caused by these bacteria.
Capsule Endoscopy is a minimally invasive medical procedure used to examine the lining of the small intestine. It involves swallowing a small, wireless camera capsule that takes images of the inside of the digestive tract as it passes through the body. The capsule is equipped with a battery and a wireless transmitter that sends images to a receiver worn around the patient's waist. The procedure is painless and does not require any sedation or anesthesia. Capsule endoscopy is often used to diagnose conditions such as Crohn's disease, celiac disease, and small intestine bleeding, which can be difficult to diagnose with traditional endoscopy methods.
Contact lenses, hydrophilic are a type of contact lens that are made from a hydrophilic (water-loving) material. These lenses are designed to absorb and retain water, which helps to keep the surface of the lens moist and comfortable on the eye. Hydrophilic contact lenses are typically worn for longer periods of time than other types of contact lenses, as they are less likely to dry out and irritate the eye. They are also generally easier to handle and put in and out of the eye than other types of contact lenses. Hydrophilic contact lenses are available in a variety of materials, including silicone hydrogel, and are used to correct a range of vision problems, including nearsightedness, farsightedness, and astigmatism.
Capsule endoscopes are small, wireless cameras that are swallowed by patients to examine the inside of their digestive tract. They are typically used to diagnose and treat conditions such as inflammatory bowel disease, celiac disease, and small intestine cancer. The capsule endoscope is about the size of a vitamin pill and contains a tiny camera, light source, and battery. It transmits images of the inside of the digestive tract to a receiver worn on the patient's waistband. The receiver records the images, which are then analyzed by a healthcare provider. Capsule endoscopes are non-invasive and do not require any sedation or anesthesia. They are typically used in patients who are unable to undergo traditional endoscopy procedures due to medical conditions or a fear of needles. However, they may not be suitable for patients with certain medical conditions, such as a history of bowel obstruction or difficulty swallowing. Overall, capsule endoscopes are a safe and effective tool for diagnosing and treating conditions of the digestive tract.
Crystallins are a group of proteins that are found in the lens of the eye. They are responsible for maintaining the transparency and shape of the lens, which is essential for focusing light onto the retina and allowing us to see clearly. There are several different types of crystallins, including alpha, beta, and gamma crystallins, each with its own unique structure and function. In the medical field, crystallins are often studied in the context of age-related eye diseases such as cataracts, which are caused by the accumulation of abnormal protein aggregates in the lens.
Contact lenses, extended-wear, are a type of contact lens that can be worn for an extended period of time, typically overnight, without being removed and cleaned. These lenses are designed to be worn continuously for up to 30 days, depending on the specific type of lens and the individual's eye health. Extended-wear contact lenses are typically made of silicone hydrogel materials, which allow more oxygen to pass through to the cornea than traditional hydrogel lenses. This can help to reduce the risk of eye irritation and dryness that can occur with extended wear. However, extended-wear contact lenses do require special care and maintenance to ensure that they remain clean and free of bacteria. It is important to follow the manufacturer's instructions for cleaning, disinfecting, and storing the lenses, and to have regular eye exams to monitor for any potential problems. Extended-wear contact lenses are generally not recommended for individuals with certain eye conditions, such as dry eye, allergies, or a history of eye infections. It is important to discuss the risks and benefits of extended-wear contact lenses with an eye care professional before deciding to use them.
Lens subluxation is a condition in which the lens of the eye becomes dislocated from its normal position within the eye. This can occur as a result of trauma, aging, or other factors. Lens subluxation can cause a range of symptoms, including blurred vision, sensitivity to light, and difficulty seeing at night. In severe cases, it can lead to vision loss. Treatment for lens subluxation typically involves surgery to reposition the lens or remove it and replace it with an artificial lens.
Contact lens solutions are solutions used to clean, disinfect, and store contact lenses. They typically contain a combination of surfactants, solvents, and preservatives that help to remove protein, lipid, and other deposits that can accumulate on the lenses over time. Contact lens solutions are an essential part of contact lens wear, as they help to prevent the growth of bacteria, fungi, and other microorganisms that can cause eye infections and other complications. There are several different types of contact lens solutions available, including multipurpose solutions, daily disinfecting solutions, and hydrogen peroxide solutions. It is important to follow the instructions provided by the manufacturer when using contact lens solutions to ensure that the lenses are properly cleaned and disinfected.
Presbyopia is a common age-related condition that affects the ability of the eye to focus on close objects. It occurs when the lens of the eye becomes less flexible and loses its ability to change shape, making it difficult to focus on objects that are close to the eye. This condition typically affects people over the age of 40 and is a natural part of the aging process. Symptoms of presbyopia may include difficulty reading small print, seeing objects clearly up close, and having to hold reading materials farther away from the face than usual. Treatment for presbyopia may include the use of glasses or contact lenses with bifocal or multifocal lenses, which allow the wearer to see both faraway and nearby objects clearly. In some cases, surgery may also be an option to correct the condition.
The Bowman's capsule is a double-walled cup-shaped structure in the kidney that surrounds the glomerulus, a network of tiny blood vessels responsible for filtering waste products from the blood. The inner layer of the Bowman's capsule is called the visceral layer, and the outer layer is called the parietal layer. The space between these two layers is called the Bowman's space or the glomerular capsule. The Bowman's capsule plays a crucial role in the filtration process of the kidneys. As blood flows through the glomerulus, small molecules such as water, ions, and waste products are filtered out of the blood and into the Bowman's space. The filtered fluid then moves into the renal tubules, where it is further processed and eventually eliminated from the body as urine. Any damage or disease affecting the Bowman's capsule can lead to impaired kidney function and the development of kidney disease.
In the medical field, "Accommodation, Ocular" refers to the ability of the eye to change its focus in order to see objects at different distances. This process involves the contraction and relaxation of the ciliary muscles, which control the shape of the lens inside the eye. When the ciliary muscles contract, the lens becomes thicker and more rounded, allowing the eye to focus on objects that are close to the eye. When the muscles relax, the lens becomes thinner and flatter, allowing the eye to focus on objects that are far away. The ability to accommodate is an important aspect of vision and is necessary for clear vision at all distances.
Capsule opacification is a medical procedure used to improve the visibility of the lens capsule during cataract surgery. The lens capsule is a thin, transparent membrane that surrounds the lens of the eye. During cataract surgery, the cloudy lens is removed, and the capsule is left behind. In capsule opacification, a small amount of a special dye is injected into the capsule to make it more visible during surgery. This helps the surgeon to better visualize the capsule and ensure that it is properly removed or repaired during the procedure. Capsule opacification is typically performed as an outpatient procedure and is usually done in conjunction with cataract surgery. It is a safe and effective way to improve the outcome of cataract surgery and reduce the risk of complications.
Eye proteins are proteins that are found in the eye and play important roles in maintaining the structure and function of the eye. These proteins can be found in various parts of the eye, including the cornea, lens, retina, and vitreous humor. Some examples of eye proteins include: 1. Collagen: This is a protein that provides strength and support to the cornea and lens. 2. Alpha-crystallin: This protein is found in the lens and helps to maintain its shape and transparency. 3. Rhodopsin: This protein is found in the retina and is responsible for vision in low light conditions. 4. Vitreous humor proteins: These proteins are found in the vitreous humor, a clear gel-like substance that fills the space between the lens and the retina. They help to maintain the shape of the eye and provide support to the retina. Disruptions in the production or function of these proteins can lead to various eye diseases and conditions, such as cataracts, glaucoma, and age-related macular degeneration. Therefore, understanding the structure and function of eye proteins is important for the development of effective treatments for these conditions.
Silicones are a group of synthetic polymers that are widely used in various medical applications due to their unique properties, such as biocompatibility, chemical stability, and thermal stability. They are typically composed of silicon, oxygen, and carbon atoms, and can be further modified to include other elements such as hydrogen, nitrogen, and fluorine. In the medical field, silicones are used in a variety of applications, including: 1. Implants: Silicones are commonly used in medical implants such as breast implants, artificial joints, and heart valves due to their biocompatibility and durability. 2. Wound dressings: Silicones are used in wound dressings due to their ability to prevent bacterial growth and promote healing. 3. Drug delivery systems: Silicones are used in drug delivery systems such as microspheres and nanoparticles to improve the delivery of drugs to specific areas of the body. 4. Medical devices: Silicones are used in medical devices such as catheters, syringes, and endoscopes due to their non-stick properties and ability to reduce friction. 5. Cosmetics: Silicones are used in cosmetics such as lotions, creams, and shampoos due to their ability to provide a smooth and silky texture. Overall, silicones are a versatile and important material in the medical field due to their unique properties and wide range of applications.
Beta-crystallins are a family of proteins that are primarily found in the lens of the eye. They are responsible for maintaining the transparency and shape of the lens, which is essential for clear vision. There are several different types of beta-crystallins, each with its own unique function and location within the lens. Beta-crystallins are also found in other tissues, including the retina, cornea, and skin. In these tissues, they may play a role in maintaining tissue structure and function. Mutations in the genes that encode beta-crystallins can lead to a variety of eye disorders, including cataracts, a condition in which the lens becomes cloudy and impairs vision. Other disorders associated with beta-crystallin mutations include congenital cataracts, juvenile cataracts, and some forms of retinal dystrophy.
Polysaccharides, bacterial are complex carbohydrates that are produced by bacteria. They are composed of long chains of sugar molecules and can be found in the cell walls of many bacterial species. Some common examples of bacterial polysaccharides include peptidoglycan, lipopolysaccharide, and teichoic acid. These molecules play important roles in the structure and function of bacterial cells, and they can also have medical significance. For example, lipopolysaccharide is a component of the outer membrane of certain gram-negative bacteria and can trigger an immune response in the body. In some cases, bacterial polysaccharides can also be used as vaccines to protect against bacterial infections.
Aphakia is a medical condition in which the lens of the eye is completely or partially missing. This can occur due to trauma, surgery, or a congenital defect. Without a lens, the eye is unable to focus light properly, leading to vision loss or blindness. In some cases, an artificial lens may be implanted to replace the missing lens and restore vision. Aphakia can also increase the risk of other eye problems, such as cataracts and glaucoma.
Alpha-crystallins are a group of small, heat-stable proteins that are found in the lens of the eye. They are also present in other tissues, such as the retina and the cornea. Alpha-crystallins are important for maintaining the transparency and structure of the lens, and they play a role in protecting the lens from damage caused by oxidative stress and other factors. In addition, alpha-crystallins have been shown to have anti-inflammatory and anti-aging properties, and they may play a role in the development of age-related eye diseases, such as cataracts and age-related macular degeneration.
Capsule of lens
Lens induced glaucomas
Lens (vertebrate anatomy)
Electromagnetic radiation and health
Intraocular lens scaffold
Manual small incision cataract surgery
Zonule of Zinn
Illinois Eye and Ear Infirmary
David J. Apple
Glued intraocular lens
Santosh G. Honavar
List of MeSH codes (A09)
Ultrastructure of the anterior lens capsule and epithelium in cataracts associated with granulomatosis with polyangiitis |...
Traumatic Cataract: Background, Pathophysiology, Epidemiology
Molecular Vision: Loss of AND-34/BCAR3 expression in mice results in rupture of the adult lens
Table - Novel Retinal Lesion in Ebola Survivors, Sierra Leone, 2016 - Volume 23, Number 7-July 2017 - Emerging Infectious...
Dieter P. Reinhardt | Anatomy and Cell Biology - McGill University
Novel Intraocular Lens May Prevent Negative Dysphotopsia
The Veteran With a Blind Painful Eye - American Academy of Ophthalmology
CRSTG | Europe Edition | Cracking the Nucleus With Manual Fragmentation
NIOSHTIC-2 Search Results - Full View
CRSToday | Phacoemulsification of the Mature Nucleus
Challenging Cataract Cases - American Academy of Ophthalmology
Gonioscopy-Assisted Transluminal Trabeculotomy (GATT) - a glaucoma surgery - EyeWiki
Everything You Need to Know about EMF Threats | Ener-G-Polari-T Products
Wissenschaftliche Originalarbeiten 2001
Clinical Ophthalmic Echography | Κωνσταντάρας
MODIP - Aristoteles-Universität Thessaloniki | Curriculum Vitae
WO2020180729A1 - Numerical system control of ophthalmic visualization and imaging system - Google Patents
forceps | Taber's Medical Dictionary
Congenital Cataract - Pediatrics - MSD Manual Professional Edition
Discover images - Retina Image Bank
CPC sample question # 9
Intraocular Lens Implant (IOL)-Types, Advantages, Disadvantages | IOLs
Anterior - SNAP Cats
Laser Cataract Surgery
Clinical Comparison of Visual and Refractive Outcomes of Two Models of Accommodative Intraocular Lenses - Philippine Journal Of...
Возрастные изменения структуры и биомеханических свойств фиброзной оболочки глаза (обзор зарубежной литературы). Сообщение 2....
- A small percentage of AND-34 −/− mice show distinctive small white eye lesions resulting from the migration of ruptured cortical lens tissue into the anterior chamber. (molvis.org)
- Posterior synechiae and/or pigment on anterior lens capsule, keratic precipitates but no anterior chamber inflammation, or both. (cdc.gov)
- 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)
- With this finding, we diagnosed lens luxation into the anterior chamber. (aao.org)
- 1) When we first examined Mr. Grover, his right eye had a dense mass that could be seen in the inferior angle of 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)
- The anterior chamber was relatively shallow. (crstodayeurope.com)
- The goal of hydrodissection was therefore to prolapse the lens into the anterior chamber. (crstodayeurope.com)
- A chop setting can be used with high vacuum to lift the lens into the anterior chamber. (crstodayeurope.com)
- In addition to the dense nuclear sclerosis, note other complicating factors, including endothelial dystrophy, a shallow anterior chamber, a pre-existing bleb, the presence of exfoliation, or evidence of previous trauma or inflammation. (crstoday.com)
- A goniotomy was performed (whiter image) to allow the entry of the Prolene suture into the Schlemm's canal, and there is some blood escaping from the ends of the goniotomy into the anterior chamber. (aao.org)
- Viscoelastic was used to deepen the anterior chamber and a clear cornea temporal incision was made. (codingahead.com)
- The phacoemulsification hand-piece was introduced into anterior chamber and the nucleus was carefully removed. (codingahead.com)
- Viscoelastic was injected into the anterior chamber. (codingahead.com)
- 1999-2000 - Reduction of Manifest Astigmatism with the Toric Posterior Chamber Intra-ocular lens versus Astigmatic Keratotomy: a comparison study - presented at ASCRS - Boston, May 2000. (miramareye.com)
- Light passing through the cornea is converged (bent) where it passes through the anterior chamber and the pupil, a circular opening regulating the amount of light entering the eye. (medscape.com)
- NEW ORLEANS - A novel intraocular lens (IOL) appears to prevent negative dysphotopsia associated with cataract surgery, according to prospective studies in 100 patients. (medscape.com)
- A forceps for making an opening in the anterior capsule of the lens during cataract surgery. (unboundmedicine.com)
- An IOL (Intraocular Lens) is a small, lightweight, clear plastic disk placed within the eye during cataract surgery. (eyemantra.in)
- The rapid evolution of IOL (Intraocular Lens) designs, materials, and implant techniques have made them secure and practical due to restoring normal vision after cataract surgery. (eyemantra.in)
- It is not the physiological position of the natural lens of the attention, and this sort of lens isn't the popular IOL after non-complicated cataract surgery. (eyemantra.in)
- These lenses are considered entry-level options for cataract surgery and are recommended for somebody on a coffee budget. (eyemantra.in)
- The main goal of cataract surgery is to remove the cataractous lens that obstructs the field of vision and maintain an intact capsular bag so that an intraocular lens (IOL) can be implanted for visual rehabilitation. (paojournal.com)
- Currently, there are three main types of intraocular lenses used in cataract surgery: monofocal non-accommodating, multifocal, and monofocal accommodating. (paojournal.com)
- For these lenses to perform as they are designed to, it is important that refractive outcomes after cataract surgery are on target and near emmetropia. (paojournal.com)
- 1999 - Anterior Capsule Staining for White Cataracts - presentation at Jules Stein Eye Institute, UCLA Annual Cataract Surgery Conference. (miramareye.com)
- While Akt Ser 473 phosphorylation was readily detectable in AND-34 +/+ lens epithelial cells, it was markedly reduced in the AND-34 −/− lens epithelium. (molvis.org)
- Basal levels of p130Cas phosphorylation were higher in AND-34 +/+ than in AND-34 −/− lens epithelium. (molvis.org)
- Lenticular 0pacities appeared as small white dots at the level of the anterior epithelium beneath the anterior capsule. (cdc.gov)
- 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)
- Cataracts may be located in the center of the lens (nuclear), or they may involve the lens material underneath the anterior or posterior lens capsule (subcapsular or cortical). (msdmanuals.com)
- As with other cataracts, the lens opacity obscures vision. (msdmanuals.com)
- Cataracts are simply a clouding of the otherwise normal crystalline lens caused typically by the aging process, although sometimes injuries or drugs can contribute to this disorder. (premiermedicalgrp.com)
- Cataracts cause the clear lens to become cloudy or opaque inhibiting the passage of light to the back of the eye and causing a significant reduction in vision oftentimes leading to the complaint of frosted or fogged vision by the patient. (premiermedicalgrp.com)
- Ophthalmologic abnormalities-cataracts (most common), anterior lenticonus (a regular conical protrusion on the anterior aspect of the lens due to thinning of the lens capsule), spherophakia (spherical lens deformation that can predispose to lens subluxation), nystagmus, retinitis pigmentosa, blindness-also occur but less frequently than hearing loss. (msdmanuals.com)
- Following initial vacuolization and liquefaction of the lens cortex first observed at postnatal day three, posterior lens rupture occurs in all AND-34 −/− mice, beginning as early as three weeks and seen in all mice at three months. (molvis.org)
- This equatorial stretching can disrupt the lens capsule, zonules, or both. (medscape.com)
- 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)
- It is responsible for Vossius ring (imprinted iris pigment) sometimes found on the anterior lens capsule following blunt injury. (medscape.com)
- Along with ND, the researchers looked for other complications, such as iris chafe, "given that the optic projects in front of the capsule," he said. (medscape.com)
- The first two versions eliminated ND but did not eliminate capsule block or iris-optic capture. (medscape.com)
- In the original version, none of 39 patients developed ND, but 3 had capsule block and 2 had iris-optic capture, in which the iris was "caught in the margin of the groove," he said. (medscape.com)
- To date, 13 patients have been implanted with version 3 of the 90S, and none has developed ND, capsule block, or iris-optic capture, Dr Masket reported. (medscape.com)
- No patient developed iris chafe, capsule block has been eliminated as a complication, and the risk for iris-optic capture "has clearly been reduced and possibly eliminated," he said. (medscape.com)
- In rabbits irradiance exceeding 4.0 watts per square centimeter (W/sq cm) resulted in threshold radiant exposure of 1250 joules per square centimeter (J/sq cm) for the corneas, 1250 J/sq cm for the iris and 2250 J/sq cm for the lens. (cdc.gov)
- In the primate, irradiance above 4.0W/sq cm resulted in radiant exposure thresholds of 8000 J/sq cm for the cornea and iris and 10,000 J/sq cm for the lens. (cdc.gov)
- Posterior iris fixation of the iris-claw intraocular lens implantation through a scleral tunnel incision. (ophtec.com)
- These lenses are placed on top of the iris. (eyemantra.in)
- They are the result of inflammation in the iris and are particularly common with anterior uveitis (inflammation of the dark tissues of the eye) and trauma to the eye. (snapcats.org)
- Anterior synechiae is defined as an adhesion between the iris and the cornea. (snapcats.org)
- Posterior synechiae is the adherence of the iris to the capsule surrounding the lens of the eye. (snapcats.org)
- The iris forms a contractile diaphragm in front of the lens, and is pierced, a little to the nasal side of its centre, by an almost circular aperture, the pupil, which, during life, is continually varying in size in order to regulate the amount of light admitted into the interior of the eye. (co.ma)
- Light is further converged by the crystalline lens located posterior to the iris. (medscape.com)
- In addition, the FemtoSecond Laser actually softens the nucleus (the inside portion) of the cataractous lens allowing the cataract to be suctioned and removed from the eye more efficiently with less ultrasound energy for the patient. (premiermedicalgrp.com)
-  TINU has been reported to be responsible for approximately 32% of children under 20 years old with sudden onset bilateral anterior uveitis. (thepajo.org)
- Most patients present with bilateral anterior uveitis characterized by red eye, blurry vision, pain, and photophobia among others. (thepajo.org)
- The effects of infrared radiation on rabbit and monkey eyes were tested to establish the ocular threshold exposure values for radiation in the 700 to 1400 nanometers (nm) wavelength range necessary to produce cateracts in the crystalline lenses. (cdc.gov)
- 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)
- Lens luxation (or dislocation) can be associated with various processes that can weaken or damage the zonular-capsular complex. (aao.org)
- A capsule polisher was used to remove posterior capsular opacities off the lens. (codingahead.com)
- The lens was folded and inserted through the temporal incision into the capsular bag and removed into position with the Lester hook. (codingahead.com)
- Multifocal IOLs are lenses that supply an appropriate restoration of vision for both near and distance. (eyemantra.in)
- Their idea for correcting this in version 3 was to enlarge the anterior part of the optic to 6.4 mm and to use a myotic at the time of surgery in order to keep the pupil small in the early postoperative period. (medscape.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 pupillary or free margin forms the circumference of the pupil, and rests upon the anterior surface of the capsule of the lens. (co.ma)
- Reshaping of the cornea with corneal incisions to reduce astigmatism, and the removal of the front surface (anterior lens capsule) of the crystalline lens that contains the cataract. (premiermedicalgrp.com)
- It partially divides the space between the cornea and lens into two portions, which are filled by the aqueous humour, and are named, respectively, the anterior and posterior chambers of the eye. (co.ma)
- Photons within the visible spectrum (ie, light) enters the eye first by passing through the cornea, a clear, dome-shaped structure at the anterior post portion of the globe. (medscape.com)
- If the optic is in front of the capsule, the symptoms will either not develop or will be improved. (medscape.com)
- Synechiae may be anterior or posterior. (snapcats.org)
- It rectifies the focusing power of the eye's natural lens. (eyemantra.in)
- These lenses are tucked into the place over the residual posterior capsule within the physiological position of the natural lens of the attention and are the favored lenses. (eyemantra.in)
- Monofocal lenses, unlike the natural lens of the attention, can only restore vision for one distance, that's for distance, or for near. (eyemantra.in)
- These findings paved the way for the quest to create the ideal accommodating IOL which could mimic the function and properties of the natural lens. (paojournal.com)
- I use the technique in all of my cataract cases-from trainee cases to surgery on eyes with traumatic, dense white lenses. (crstodayeurope.com)
- Western blot analysis and in situ hybridization confirmed the presence of AND-34 RNA and protein in lens epithelial cells, particularly at the lens equator. (molvis.org)
- Pars ciliaris retina Wards, towards the equator of the lens, while the apex is continuous behind with some three or four ridges of the orbiculus ciliaris. (co.ma)
- As an anterior segment and glaucoma surgeon, I frequently operate on eyes with a traumatic or uveitic cataract or a cataract from pseudoexfoliation (PXF) syndrome. (crstodayeurope.com)
- A 36-year-old patient with Marfan syndrome presented with a severely dislocated crystalline lens (Figure 3). (crstodayeurope.com)
- Severely dislocated lens in the eye of a patient with Marfan syndrome. (crstodayeurope.com)
- Winkler J, Lünsdorf H, Wirbelauer C, Reinhardt DP, Laqua H (2001) Immunohistochemical and charge-specific localization of anionic constituents in pseudoexfoliation deposits on the central anterior lens capsule from individuals with pseudoexfoliation syndrome. (uksh.de)
- Soft, foldable lenses are often inserted through a touch incision which shortens recovery time follow surgery. (eyemantra.in)
- While choosing an IOL , it's vital to recollect that multifocal lenses provide you freedom from glasses for both near and distance, and will be customized to your active lifestyle. (eyemantra.in)
- Phacoemulsification with intraocular lens implantation in the left eye. (codingahead.com)
- However, these are the lenses that are imported and are manufactured by Bausch & Lomb (USA). (eyemantra.in)
- Only 85% patients who experience anterior segment injury reach a final visual acuity of 20/40 or better, whereas only 40% patients with posterior segment injury reach this level. (medscape.com)
- According to Dr Masket, ND can be induced by any "in the bag" IOL with the anterior capsulotomy edge overlying the optic. (medscape.com)
- Regardless of the cause, he said, his experience has shown that "ND is prevented, relieved, or improved when the IOL optic edge overlies the anterior capsulotomy, either sulcus-placed or with reverse optic capture…The optic is anterior to the capsule edge but the haptics remain within the capsule bag. (medscape.com)
- His "capsulotomy-fixated" IOL features a groove on the anterior optic that captures the capsulotomy, he explained. (medscape.com)
- Part of the optic overlies the capsule, rather than vice versa, and the lens is essentially fixated by the anterior capsule. (medscape.com)
- The lens was then modified to include fixation holes that made it easier for surgeons to capture the optic and an "escape route" that prevents the entrapment of fluid. (medscape.com)
- It has hinges that connect the two haptic plates to the optic allowing the lens to vault forward due to a pressure gradient from the vitreous cavity and move backward when the pressure dissipates.6 When a pseudophakic eye tries to accommodate, the ciliary muscle contracts increasing the pressure inside the vitreous cavity. (paojournal.com)
- Aside from vaulting of the entire optic forward, another proposed mechanism of action is arching of the center of the lens optic increasing its radius of curvature. (paojournal.com)
- The third generation Crystalens AT-50SE involved enlarging the lens optic to 5 mm to decrease glare and halo effects, and increased arc length of the haptics for better stability. (paojournal.com)
- The lens plays a crucial role in focusing images on the retina. (eyemantra.in)
- If the lens loses its vision clarity because it does when a cataract develops, light rays don't focus clearly and thus the image one sees becomes blurry. (eyemantra.in)
- The facility of the Monofocal Intraocular lenses is typically calculated so that the patient doesn't need glasses for sight. (eyemantra.in)
- The term describes a very short ultrasound phacoemulsification with a compact linear groove aiming toward the posterior pole of the lens. (crstoday.com)
- What happens is that the eye lens gets covered with a cloudy substance which results in vision loss. (eyemantra.in)
- On examination, PXF material was evident on the lens capsule (Figure 1). (crstodayeurope.com)
- Slit-lamp photograph of PXF material on the anterior lens capsule. (crstodayeurope.com)
- Also, select the IOL material and design based on the situation anticipated but predetermine a back-up lens. (crstoday.com)
- High vacuum and a low power (epinuclear) setting were then used to remove the lens without ultrasound. (crstodayeurope.com)
Surface of the eye2
- See What the Eyes Tell You: 15 Abnormalities of the Lens , a Critical Images slideshow, to help recognize lens abnormalities that are clues to various conditions and diseases. (medscape.com)
- After creation of the capsulorhexis, two capsule retractors (MicroSurgical Technology) were placed to support and center the crystalline lens. (crstodayeurope.com)
- These results demonstrate the loss of AND-34 dysregulates focal adhesion complex signaling in lens epithelial cells and suggest that AND-34-mediated signaling is required for maintenance of the structural integrity of the adult ocular lens. (molvis.org)