Artificial Lens Implant Migration: The shifting and or tilting of implanted artificial lens resulting in impaired vision.Eye, Artificial: A ready-made or custom-made prosthesis of glass or plastic shaped and colored to resemble the anterior portion of a normal eye and used for cosmetic reasons. It is attached to the anterior portion of an orbital implant (ORBITAL IMPLANTS) which is placed in the socket of an enucleated or eviscerated eye. (From Dorland, 28th ed)Lenses, Intraocular: Artificial implanted lenses.Lenses: Pieces of glass or other transparent materials used for magnification or increased visual acuity.Cataract Extraction: The removal of a cataractous CRYSTALLINE LENS from the eye.Lens Implantation, Intraocular: 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.Cataract: Partial or complete opacity on or in the lens or capsule of one or both eyes, impairing vision or causing blindness. The many kinds of cataract are classified by their morphology (size, shape, location) or etiology (cause and time of occurrence). (Dorland, 27th ed)Lens Capsule, Crystalline: The thin noncellular outer covering of the CRYSTALLINE LENS composed mainly of COLLAGEN TYPE IV and GLYCOSAMINOGLYCANS. It is secreted by the embryonic anterior and posterior epithelium. The embryonic posterior epithelium later disappears.Visual Acuity: Clarity or sharpness of OCULAR VISION or the ability of the eye to see fine details. Visual acuity depends on the functions of RETINA, neuronal transmission, and the interpretative ability of the brain. Normal visual acuity is expressed as 20/20 indicating that one can see at 20 feet what should normally be seen at that distance. Visual acuity can also be influenced by brightness, color, and contrast.Patents as Topic: Exclusive legal rights or privileges applied to inventions, plants, etc.Receptors, sigma: A class of cell surface receptors recognized by its pharmacological profile. Sigma receptors were originally considered to be opioid receptors because they bind certain synthetic opioids. However they also interact with a variety of other psychoactive drugs, and their endogenous ligand is not known (although they can react to certain endogenous steroids). Sigma receptors are found in the immune, endocrine, and nervous systems, and in some peripheral tissues.Capsule Opacification: Clouding or loss of transparency of the posterior lens capsule, usually following CATARACT extraction.Inventions: A novel composition, device, or process, independently conceived de novo or derived from a pre-existing model.Posterior Capsule of the Lens: The posterior aspect of the casing that surrounds the natural CRYSTALLINE LENS.Capsulorhexis: 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. (Dorland, 28th ed)Pseudophakia: Presence of an intraocular lens after cataract extraction.Anterior Chamber: 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. (Cline et al., Dictionary of Visual Science, 4th ed, p109)Endophthalmitis: Suppurative inflammation of the tissues of the internal structures of the eye frequently associated with an infection.Iris: The most anterior portion of the uveal layer, separating the anterior chamber from the posterior. It consists of two layers - the stroma and the pigmented epithelium. Color of the iris depends on the amount of melanin in the stroma on reflection from the pigmented epithelium.Electricity: The physical effects involving the presence of electric charges at rest and in motion.Optic Nerve: The 2nd cranial nerve which conveys visual information from the RETINA to the brain. The nerve carries the axons of the RETINAL GANGLION CELLS which sort at the OPTIC CHIASM and continue via the OPTIC TRACTS to the brain. The largest projection is to the lateral geniculate nuclei; other targets include the SUPERIOR COLLICULI and the SUPRACHIASMATIC NUCLEI. Though known as the second cranial nerve, it is considered part of the CENTRAL NERVOUS SYSTEM.Accidents, Occupational: Unforeseen occurrences, especially injuries in the course of work-related activities.Shoulder: Part of the body in humans and primates where the arms connect to the trunk. The shoulder has five joints; ACROMIOCLAVICULAR joint, CORACOCLAVICULAR joint, GLENOHUMERAL joint, scapulathoracic joint, and STERNOCLAVICULAR joint.Mandibular Injuries: Injuries to the lower jaw bone.Eye: The organ of sight constituting a pair of globular organs made up of a three-layered roughly spherical structure specialized for receiving and responding to light.Accommodation, Ocular: The dioptric adjustment of the EYE (to attain maximal sharpness of retinal imagery for an object of regard) referring to the ability, to the mechanism, or to the process. Ocular accommodation is the effecting of refractive changes by changes in the shape of the CRYSTALLINE LENS. Loosely, it refers to ocular adjustments for VISION, OCULAR at various distances. (Cline et al., Dictionary of Visual Science, 4th ed)Siloxanes: Silicon polymers that contain alternate silicon and oxygen atoms in linear or cyclic molecular structures.Phacoemulsification: 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. (Cline, et al., Dictionary of Visual Science, 4th ed & In Focus 1993;1(1):1)Intraocular Pressure: The pressure of the fluids in the eye.Isosorbide: 1,4:3,6-Dianhydro D-glucitol. Chemically inert osmotic diuretic used mainly to treat hydrocephalus; also used in glaucoma.Polymers: Compounds formed by the joining of smaller, usually repeating, units linked by covalent bonds. These compounds often form large macromolecules (e.g., BIOPOLYMERS; PLASTICS).Quaternary Ammonium Compounds: Derivatives of ammonium compounds, NH4+ Y-, in which all four of the hydrogens bonded to nitrogen have been replaced with hydrocarbyl groups. These are distinguished from IMINES which are RN=CR2.Tetraoxanes: Compounds with two peroxide groups, that is, two pairs of adjacent OXYGEN atoms. They may have activity against PLASMODIUM similar to the ARTEMISININS.Ionophores: Chemical agents that increase the permeability of biological or artificial lipid membranes to specific ions. Most ionophores are relatively small organic molecules that act as mobile carriers within membranes or coalesce to form ion permeable channels across membranes. Many are antibiotics, and many act as uncoupling agents by short-circuiting the proton gradient across mitochondrial membranes.Device Approval: Process that is gone through in order for a device to receive approval by a government regulatory agency. This includes any required preclinical or clinical testing, review, submission, and evaluation of the applications and test results, and post-marketing surveillance. It is not restricted to FDA.Equipment and Supplies: Expendable and nonexpendable equipment, supplies, apparatus, and instruments that are used in diagnostic, surgical, therapeutic, scientific, and experimental procedures.Refractometry: Measurement of the index of refraction (the ratio of the velocity of light or other radiation in the first of two media to its velocity in the second as it passes from one into the other).Niobium: Niobium. A metal element atomic number 41, atomic weight 92.906, symbol Nb. (From Dorland, 28th ed)Biocompatible Materials: Synthetic or natural materials, other than DRUGS, that are used to replace or repair any body TISSUES or bodily function.Ophthalmologic Surgical Procedures: Surgery performed on the eye or any of its parts.Biomedical Engineering: Application of principles and practices of engineering science to biomedical research and health care.Toe Joint: The articulation between the head of one phalanx and the base of the one distal to it, in each toe.Finite Element Analysis: A computer based method of simulating or analyzing the behavior of structures or components.Metallurgy: The science, art, or technology dealing with processes involved in the separation of metals from their ores, the technique of making or compounding the alloys, the techniques of working or heat-treating metals, and the mining of metals. It includes industrial metallurgy as well as metallurgical techniques employed in the preparation and working of metals used in dentistry, with special reference to orthodontic and prosthodontic appliances. (From Jablonski, Dictionary of Dentistry, 1992, p494)Gift Giving: The bestowing of tangible or intangible benefits, voluntarily and usually without expectation of anything in return. However, gift giving may be motivated by feelings of ALTRUISM or gratitude, by a sense of obligation, or by the hope of receiving something in return.Bone Density: The amount of mineral per square centimeter of BONE. This is the definition used in clinical practice. Actual bone density would be expressed in grams per milliliter. It is most frequently measured by X-RAY ABSORPTIOMETRY or TOMOGRAPHY, X RAY COMPUTED. Bone density is an important predictor for OSTEOPOROSIS.Implantable Neurostimulators: Surgically placed electric conductors through which ELECTRIC STIMULATION of nerve tissue is delivered.Corneal Surgery, Laser: Surgical techniques on the CORNEA employing LASERS, especially for reshaping the CORNEA to correct REFRACTIVE ERRORS.Wound Healing: Restoration of integrity to traumatized tissue.Bandages: Material used for wrapping or binding any part of the body.Fibronectins: Glycoproteins found on the surfaces of cells, particularly in fibrillar structures. The proteins are lost or reduced when these cells undergo viral or chemical transformation. They are highly susceptible to proteolysis and are substrates for activated blood coagulation factor VIII. The forms present in plasma are called cold-insoluble globulins.Cicatrix: The fibrous tissue that replaces normal tissue during the process of WOUND HEALING.Occlusive Dressings: Material, usually gauze or absorbent cotton, used to cover and protect wounds, to seal them from contact with air or bacteria. (From Dorland, 27th ed)

Risk of late intraocular lens dislocation after cataract surgery, 1980-2009: a population-based study. (1/6)

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Effect of decentration on the optical performance in multifocal intraocular lenses. (2/6)

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Pathologic assessment of complications with asymmetric or sulcus fixation of square-edged hydrophobic acrylic intraocular lenses. (3/6)

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Scleral fixation of a one-piece toric intraocular lens. (4/6)

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Dislocation of polyfocal full-optics accommodative intraocular lens after neodymium-doped yttrium aluminum garnet capsulotomy in vitrectomized eye. (5/6)

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Visual outcome and rotational stability of open loop toric intraocular lens implantation in Indian eyes. (6/6)

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A BRITISH woman is one of the first eye patients to boost her sight with a revolutionary new artificial lens implant that mimics a camera zoom.
[131 Pages Report] Check for Discount on United States Artificial Lens Industry 2016 Market Research Report report by QYResearch Group. The United States Artificial Lens Industry 2016 Market Research Report...
A large, uniquely crafted microscope suspends from the ceiling of the high tech eye surgery suite at Cornell University. The veterinary ophthalmologist views the widely magnified diseased eye of his patient staring into binoculars. A few feet below he utilizes a deft touch to guide instruments that accomplish the miraculous task of restoring sight to a dog whose world had turned dark. Dr. Eric Ledbetter places a fine incision in the eye to allow ultrasound instruments to gently jiggle and then detach the cloudy cataract tissue before sucking it out through the same incision. He then squeezes a soft, rather fluid artificial intraocular lens into the space formerly occupied by the old lens. "We inject the artificial lens and the capsule holds it in place. The artificial lens restores their vision to what it was before," said Ledbetter ...
When a cataract progresses to the point that it affects a persons ability to do normal everyday tasks, surgery may be needed. Cataract surgery involves removing the lens of the eye and replacing it with an artificial lens. The artificial lens requires no care and significantly improves vision. Cataract surgeries are typically out-patient procedures and allow the patient to return home that same day. If surgery is recommended Dr. Ruan can recommend highly skilled and qualified surgeons in the area and will provide follow-up care throughout the process to make sure there are absolutely no complications. ...
In laser cataract surgery, the lens inside your eye that has become cloudy is removed and replaced with an artificial lens to restore clear vision. The result …
The only effective way of treating loss of vision is through surgery. Cataract surgery is very common. During the surgery the clouded lens are removed. The lens is what makes it possible for a person to focus on an object. When it is removed it can be replaced with an artificial lens which is called an IOL. At times this may not be used and glasses or lenses will make up for the lens that has been removed. Surgery may not be needed and it could be delayed for many months. Theres a significant
Topography & Autorefraction are done at the same time. Topography is a topographical map of your cornea. You may have this done if you have corneal trouble such as Keratoconus or if you have cataracts. Autorefraction provides an objective measurement of your refractive error (the strength glasses you wear). It is particularly important to know your refraction prior and after cataract surgery to calculate the most suitable artificial lens. Currently Medicare does not offer a refund for this vital test.. ...
She then looked in his eye and told me that she thought he had a cataract. This would require surgery to remove the lens of his eye, which could then be replaced with an artificial lens and that he would get his vision back. She gave me a referral to a paediatric ophthalmologist. I went home and rang my husband (who was away travelling for work) and burst into tears, telling him that Adam was blind and would require surgery on his eye. After I had calmed down a little bit, done some Googling, I told a few friends, and I remember saying "at least its not cancer". As traumatic as him having a cataract would have been, I wish that is all it was ...
A cataract is a clouding of the lens in your eye. It can affect one or both eyes. Cataracts are treated by surgery, where the cloudy lens is removed and replaced by a clear artificial lens.
The use of one or more open loop dc centrifugal fans in a housing having this geometrical configuration provides an efficient and versatile method of cooling the units and power supply. The speed of an open loop centrifugal brushless dc fan (distinct from the fan described in EP 320 720) varies with back pressure and because the fans are located adjacent to the receiving means, as the impedance presented by the unit or units in the receiving means decreases, then so does the back pressure. This results in a decrease in fan speed and hence of fan noise. Apparatus with this type of housing and cooling arrangement would find use in a variety of different environments. In one configuration all the units are of the same type, for example magnetic disk drives. If one set of units is replaced with a second set having lower air flow impedance the overall air flow through the housing increases while the speed and noise of the fans automatically decreases. This would be especially useful in the case where ...
An on-chip calibration system comprises a transmitter, a receiver, a phase and amplitude determination element configured to determine amplitude and phase characteristics of an output signal generated
The 2014 International Consumer Electronics Show highlighted the strong interest in smart materials, and the industry believes that this market will hit $1.2 billion in 2014. Although the commercial sector s interest in these types of materials is relatively new, animals have been evolving some of the most advanced materials for millions of years in order to develop very effective features and adaptations. Examples include dolphin skin s anti-drag properties, the octopus camouflage properties, blood clots, and scar formation, to name a few.. APL researchers have designed hydrogel materials based on features exemplified by animals that can undergo large property changes in response to specific aqueous environments. For example, circulatory materials mimic octopus skin through dynamic self-assembly triggered by chemical, thermal, and mechanical stimuli. Hydrogels expand and contract in response to temperature, light, salt, humidity, and pH. Therefore, exposing them to hot or cold water, brightness ...
Sterling silver-filled earwires have a high-perceived value at a fraction of the cost of sterling silver. Sterling silver-filled earwires are made of a durable outer layer of sterling silver surrounding a copper-alloy core. Finished with an additional silver plating for uniformity and an anti-tarnish coating to preserve the beauty. Straight kidney earwires are packaged in multiple pairs for easy resale.|br /||br /|For optimal results, use nylon jaw pliers or pliers dipped in Tool Magic® heavy-duty rubber coating when working with sterling silver-filled earwires to prevent scratching or marring. Contains 10% silver, 1/10 silver filled. Stamped ".925/10SF."
For position control, Boadicea uses a proportional-integral (P-I) control law. The advantage of an integrator is that it provides high gain at low frequencies and attenuates higher frequency noise. The biggest disadvantage the P-I control law is integral windup. Also, the servo response is slow because the valve does not open until after an error is established. To solve these shortcomings, Boadicea uses a feed-forward control law for a short time after a change in goal position. When the goal position changes, the P-I feedback controller is disabled, and the feed-forward controller operates open loop while the leg is moving. The feed-forward controller provides several advantages. First, because the integrator is disabled during the motion, it does not build up a large error. Second, the response time of the system is improved because the valve opens full bore without waiting for an error to accumulate. A third benefit is that the feedback controller only operates on smaller errors, so the ...
Finish your designs with glowing style using the JBB antique copper-plated brass flower pinch end cap. This wide end cap features a cut-out design of flowers on the front side. The cut-out design allows stringing material to peek through. This end is perfect for using with wider stringing material such as leather or suede. The inside of the cap features teeth that will firmly grip the ends of your stringing material. An open loop is located at the top, so you can easily attach it to a clasp. This end cap displays a warm copper color, perfect for pairing with rich tones.. These items are sold individually, but usually used in pairs. Make sure to buy at least two.. ...
This device includes a centrifugal cup or bowl (2) rotating at the speed of 2ω around its revolving axis, a separation chamber (3) connected to the center of this cup or bowl (3) by three channels (4, 5, 6) integral to three flexible tubes (4 a , 5 a , 6 a) forming open loops driven at the speed of ω while their second respect extremities, coaxially located with respect to the first ones, are stationary. The radius and height of this cup or bowl (2) are between 25-50 mm, and 75 to 125% respectively of this radius; its angular speed 2ω is |500 rad/sec to ensure a flow rate for the liquid to be centrifuged of at least 100 ml/min. The material and the dimensions of the tubes (4 a , 5 a , 6 a) are chosen so that the traction force exerted on them is |0.7 N/mm2, its elasticity module is |5 N/mm2 and its rupturing resistance to alternate bending is higher than 1.5 N/mm2.
A-scan ultrasound biometry, commonly referred to as an A-scan (short for Amplitude scan), is routine type of diagnostic test used in optometry or ophthalmology. The A-scan provides data on the length of the eye, which is a major determinant in common sight disorders. The most common use of the A-scan is to determine eye length for calculation of intraocular lens power. Briefly, the total refractive power of the emmetropic eye is approximately 60. Of this power, the cornea provides roughly 40 diopters, and the crystalline lens 20 diopters. When a cataract is removed, the lens is replaced by an artificial lens implant. By measuring both the length of the eye (A-scan) and the power of the cornea (keratometry), a simple formula can be used to calculate the power of the intraocular lens needed. There are several different formulas that can be used depending on the actual characteristics of the eye. All the information here is not valid for medical purposes. The other major use of the A-scan is to ...
Aphakia is the absence of the lens of the eye, due to surgical removal, a perforating wound or ulcer, or congenital anomaly. It causes a loss of accommodation, far sightedness (hyperopia), and a deep anterior chamber. Complications include detachment of the vitreous or retina, and glaucoma. Babies are rarely born with aphakia. Occurrence most often results from surgery to remove congenital cataract (clouding of the eyes lens, which can block light from entering the eye and focusing clearly). Congenital cataracts usually develop as a result of infection of the fetus or genetic reasons. It is often difficult to identify the exact cause of these cataracts, especially if only one eye is affected. People with aphakia have relatively small pupils and their pupils dilate to a lesser degree. Without the focusing power of the lens, the eye becomes very farsighted. This can be corrected by wearing glasses, contact lenses, or by implant of an artificial lens. Artificial lenses are described as ...
A recently completed Harris Interactive survey found an extraordinary lack of understanding of the mid- life vision condition called "presbyopia." However, it also found that the vast majority of patients who underwent implantation of artificial lenses to correct the condition were overwhelmingly satisfied.. Presbyopia is a common eye condition, typically beginning around age 45, in which the natural lens of the eye becomes firmer and resists changing focus from far to near, making everyday tasks such as reading difficult.. The survey was conducted for the American Society of Cataract and Refractive Surgery Foundation (ASCRS) to gather a better understanding of peoples attitudes toward/knowledge of presbyopia and the available treatment options to correct this problem. The telephone survey polled 500 adults, aged 45+ from the general population, and 250 patients who had presbyopia- correcting artificial lenses implanted in their eyes.. "Survey results showed that most adults in both sample ...
Youll see a lot on our coverage of the Curiosity landing about Open Loop Recording, something which was hinted at in a previous post about the difference between signal and data.. OLR refers to the type of recording that will be made by Mars Express as Curiosity descends towards Mars, and in parallel by ESAs New Norcia station here on Earth.. In open loop recording, we dont try to decode the bits and bytes being sent by the descending lander but instead try and listen to as much of the radio spectrum as we can, hopefully detecting the tone of the landers transmissions within this spectrum. Think of it like listening to a crowd of people - you can either focus on the words one person is saying, or listen to the whole crowd to get a full picture of whats going on; thats what well do with open loop recording.. On Mars Express well use our UHF Melacom radio to listen in on the UHF part of the spectrum - usually used on Earth for radio and television transmissions; its also used at Mars ...
During cataract surgery, your cloudy natural lens is removed and replaced with a clear artificial lens. That lens is called an intraocular lens (IOL).
Early stage cataracts may be able to be treated with glasses or lifestyle changes, such as using brighter lights, but if they are hindering the ability to function in daily life, it might mean it is time for cataract surgery.. Cataract surgery is one of the most common surgeries performed today and it involves removing the natural lens and replacing it with an artificial lens, called an implant or an intraocular lens. Typically the standard implants correct the patients distance vision but reading glasses are still needed. However as technology has gotten more sophisticated you can now get multifocal implants that can reduce or eliminate the need for glasses altogether. Usually the procedure is an outpatient procedure (you will go home the same day) and 95% of patients experience improved vision almost immediately.. ...
Early stage cataracts may be able to be treated with glasses or lifestyle changes, such as using brighter lights, but if they are hindering the ability to function in daily life, it might mean it is time for cataract surgery.. Cataract surgery is one of the most common surgeries performed today and it involves removing the natural lens and replacing it with an artificial lens, called an implant or an intraocular lens. Typically the standard implants correct the patients distance vision but reading glasses are still needed. However as technology has gotten more sophisticated you can now get multifocal implants that can reduce or eliminate the need for glasses altogether. Usually the procedure is an outpatient procedure (you will go home the same day) and 95% of patients experience improved vision almost immediately.. ...
Early stage cataracts may be able to be treated with glasses or lifestyle changes, such as using brighter lights, but if they are hindering the ability to function in daily life, it might mean it is time for cataract surgery.. Cataract surgery is one of the most common surgeries performed today and it involves removing the natural lens and replacing it with an artificial lens, called an implant or an intraocular lens. Typically the standard implants correct the patients distance vision but reading glasses are still needed. However as technology has gotten more sophisticated you can now get multifocal implants that can reduce or eliminate the need for glasses altogether. Usually the procedure is an outpatient procedure (you will go home the same day) and 95% of patients experience improved vision almost immediately.. ...
For people with astigmatism, there is an IOL called a toric lens. Astigmatism is a refractive error caused by an uneven curve in your cornea or lens. The toric lens is designed to correct that refractive error.. An intraocular lens (or IOL) is a tiny, artificial lens for the eye. It replaces the eyes natural lens that is removed during cataract ...
The International Ophthalmology Day is celebrated on August 8, 2017. The International Ophthalmology Day is the recognition of the importance and effectiveness of the hard work of industry specialists, the improvement of international relations and the exchange of experience in this field.. Ophthalmologists started celebrating their professional holiday the "International Day of Ophthalmology" in 2004. The date of the "International Day of Ophthalmology" was August 8 - the birthday of the famous ophthalmologist Svyatoslav Fyodorov.. S.N. Fyodorov was not just a highly professional microsurgeon- ophthalmologist. Not abandoning medical practice, he was actively engaged in scientific research, and together with his colleague V. Zakharov created one of the worlds hardest artificial lens - Fyodorov-Zakharov model intraocular lenses.. The ophthalmologists job is to diagnose the condition of the eyes, identify certain abnormalities and prescribe appropriate treatment. The profession of an ...
An artificial lens with an integrated sensor is being developed as a permanent implant that could provide better long-term monitoring of high pressure
Answers from doctors on izon lens. First: This is most commonly recommended in younger people with more extreme degrees of visual need beyond what lasik can easily accomplish. It involves the removal of the natural lens and replacement with an artificial lens of the correct power. This can be of great benefit to those with extreme eyeglass needs but it does carry some risk.
The ideal amplifier An ideal amplifier will pass the input signal through to the output undistorted but enlarged (gain set by user), with no delay. It will not be affected by the output impedance of the source (sensor). In addition the ideal amplifier will be able to drive any load: supply any current. No real amplifier is ideal, but an op amp can come close, at least with regard to gain at low frequency. The typical IC op amp has an open loop gain of 10^6 and a low frequency input impedance of about 10^12 ohms. Well see shortly how such high open loop gain is harnessed to create user-desired gains. Nonlinear gain: Consider log amplifiers and anti-log amplifiers: for enhancing or minimizing waveform spikes. Filtering by amplitude. In Simulink: the Deadzone operator. Off-the-shelf amplifiers In this chapter you will learn how to apply off-the-shelf amplifier ICs (integrated circuits) to problems in instrumentation. First will come ...
This malpositioned lens needs to be surgically corrected since leaving a decentered lens, fixed dilated pupil, and eroding sutures is quite intolerable.. The IOL can be either replaced or repositioned and fixated to the adjacent structures. There seems to be no more capsular support (Figure 2). The lenses used 15 years ago were usually 13.0 mm and longer (since in 70% at least 1 loop was out of the bag), and still it was not enough for a stable fixation. Therefore, sulcus fixation alone is out of question.. Anterior chamber IOL is a reasonable option, especially the Artisan lens. However, pupilloplasty needs to be done first to ensure stable fixation and avoid diplopia.. My preference is to reposition and refixate the same IOL with minimal surgical intervention. This eye had a suprachoroidal hemorrhage in the past, probably as a result of a prolonged hypotony during the scleral fixation procedure. It is, therefore, at high risk to develop a second event if the eye is opened again. A closed ...
An all digital controlled current driver is used for each pulsed electromagnet (e.g., gradient coils) in a magnetic resonance imaging (MRI) system. Such an all digital current controller may be advantageously employed in either closed loop or open loop gradient coil control circuits. The elimination of analog components decreases cost, increases operating efficiency and improves operating characteristics of the MRI system.
As with all microscopes, it is important to continue or to start a maintenance contract to enable the best optical performance from your instrument.We are able to cover the whole of the United Kingdom and are fully equipped for any job no matter how large or small. Major repairs and spare parts are all charged for separately and can be carried out on or off site. If you would like a quotation or any further assistance, please do not hesitate to Contact Us.. Work carried out includes:. ...
Purpose : To compare clinical outcomes and find out proper formula of two 1-piece hydrophobic acrylic intraocular lens(IOLs) insertion of different properties in primary angle closure glaucoma patients. Methods : Total 66 eyes of 55 primary angle closure glaucoma patients had undergone phacoemulsification with posterior chamber(PC) IOL implantation operated by the one surgeon from 2013 to 2016 were included. Postoperative best corrected visual acuity(BCVA), intraocular pressure(IOP), spherical equivalent(SE), and effective lens position(ELP) during 6 months after insertion of two 1-piece hydrophobic acrylic IOLs of different physical properties(Envista MX60, Tecnis ZCB00) were obtained for statistical analysis. Results : 28 eyes in the Envista group and 34 eyes in the Tecnis group were included. Postoperative BCVA and IOP were significantly different after 6 months but no significant differences between two IOL groups(p=0.058). In the Envista group, SE changes were smaller than those of the ...
Results Data collection ran from June 1998 to November 2013, and 866 eyes of 786 patients were included. The mean (SD) age was 70.7 (12.4) years with 62% women. Low levels of perioperative and postoperative complications were noted, and the visual outcomes at 2 weeks in this audit were significantly better than those of the CND, with 75.4% achieving a best-corrected vision of ≥6/6 and 87.3% ≥6/12, improving to 95.8% and 100%, respectively, for best-case analysis (p,0.001 for all comparisons). 99% achieved the same or a better postoperative visual acuity than preoperatively compared with 95% in the CND (p,0.001) and none lost two lines of Snellen acuity (versus 1.24%; p,0.001). Patients receiving one of the two designs of square-edged hydrophobic acrylic intraocular lenses used in this audit did not require later YAG laser treatment compared with 2.72% of those who had a polymethylmethacrylate intraocular lens (p,0.02). Biometry accuracy was within ±1.0 D of the predicted refraction in ...
0068]In accordance with one embodiment of the disclosure described herein, TCP coatings can be prepared on a commercially pure Ti (cp-Ti) substrate using LENS®, a laser engineered net shaping and rapid prototyping (RP) process. TCP can be used as a representative material from the calcium phosphate family of bioceramics for which 45-150 micron size powders, desirable for LENS® processing, can be readily available. However, this process can be easily extended to other calcium phosphate, calcium silicate and calcium sulfate-based materials. Laser beams, owing to their high coherence and directionality, have the ability to locally melt the surface of a metal substrate. A schematic representation of the LENS® processing device 100 is shown in FIG. 5. The device can include a Nd:YAG (neodymium-doped yttrium aluminum garnet) laser that can have laser power 102 focused onto a metal substrate 104 to create a molten metal pool on the substrate surface 106. The laser beam 102 can be focused on the ...
In accordance with the present invention, a multifocal intraocular lens provides greater or lesser refraction in relation to the position of the head and eyes of a user. A multifocal intraocular lens body for insertion into a fluid-filled enucleated natural lens capsule of an eye is provided wherein the lens body encompasses the optical axis of the eye and provides different greater or lesser refraction depending upon the position of the eye. In a second embodiment, the lens body can be used with an artificial lens capsule implanted within an eye.
A hybrid haptic feedback system in which a host computer and haptic feedback device share processing loads to various degrees in the output of haptic sensations, and features for efficient output of haptic sensations in such a system. A haptic feedback interface device in communication with a host computer includes a device microcontroller outputting force values to the actuator to control output forces. In various embodiments, the microcontroller can determine force values for one type of force effect while receiving force values computed by the host computer for a different type of force effect. For example, the microcontroller can determine closed loop effect values and receive computed open loop effect values from the host; or the microcontroller can determine high frequency open loop effect values and receive low frequency open loop effect values from the host. Various features allow the host to efficiently stream computed force values to the device.
Much of the new research into cataracts has to do with the technology that is emerging to help treat cataracts surgically. The ability to customize the type of lens that I insert into the eye provides patients with more options than in years past. We now have lenses that can correct both near and distance vision at the same time, as well as lenses that correct astigmatism. The entire process of removing a cataract is very sophisticated now. The deteriorated lens is broken up into tiny fragments using a method called phacoemulsification and removed from the eye, creating space for a new, artificial lens called an intraocular lens (IOL). An IOL is generally made out of plastic, and it is folded up like a burrito. Using the incision that I used to remove the old lens, I insert the folded IOL into the eye and it opens up in that space. Ten years ago, there were few options for IOLs and we only had single distance lenses. Now, there are multifocal IOLs, which act like no-line bifocal glasses and ...
The prospect of cataract surgery can be quite daunting. It may be an extremely common and simple procedure, but it is surgery nonetheless and any surgery can be frightening. The first step in alleviating your fears is talking to your doctor. He or she will discuss with you how the procedure is done so some of the fear of the unknown diminishes.. Many people think that cataract is similar to LASIK surgery. They may both be quick, outpatient procedures, but the techniques used are different. At your initial consultation for cataract surgery in Houston, your ophthalmologist will explain to you what will be done. Contrary to popular beliefs, a laser is not used to remove the cataracts. And what most people do not know is that in order to remove the infected lens, the entire lens must be removed. In order to do this, ultrasound waves are used to break up the lens and then the pieces of the lens are suctioned from the eye. Ones the entire infected lens has been removed, an intraocular artificial lens ...
MODEL RELEASED. Cataract surgery. Image 4 of 4. Close-up of a surgeons hands suturing (stitching) a patients eye after the insertion of an artificial lens to treat a cataract. A cataract is a loss of transparency of the lens of the eye. It is extremely common in old age, and is considered to be part of the ageing process. It causes a gradual loss of visual acuity (sharpness) and increasing short-sightedness. For a sequence showing the complete procedure, see images M570/133-136. - Stock Image M570/0136
MODEL RELEASED. Eye cataract surgery by phacoemulsification. A surgeon (foreground) uses a microscope during this microsurgery. In this technique, the eyes internal lens is emulsified with an ultrasonic handpiece, and removed by aspiration from the eye. These fluids removed from the front of the eye are replaced with a balanced salt solution, and a new artificial lens is fitted to restore sight. - Stock Image C002/5490
Cataracts occur when the lens inside your eye becomes increasingly opaque resulting in misty or foggy vision.. The cause of cataract is age; however, they can be worsened by steroid use, diabetes and sunlight.. Someone with early stages of cataracts may notice a film in their vision. Often, things that used to be black and white now look grey and colours are perceived as dull. In early stage cataracts, new spectacles may improve vision but as the cataract worsens, spectacles often will not provide significant improvement. You may not be aware of cataracts in your vision because changes can be gradual. As cataracts become more advanced, vision becomes foggy, less detail is seen, reading can be slower, television isnt perfectly clear and driving becomes difficult when driving into the sun. At this stage, new spectacles will not restore normal vision and surgery is required.. Corrective surgery removes the cataract (the cloudy lens) and an artificial lens (intra ocular lens) is put into ...
Refractive lens exchange (RLE) is a surgical procedure where the patients own crystalline lens is removed and replaced with an artificial lens to achieve less dependence from glasses or contact lenses. The surgery is the same to that performed for cataract removal. Once RLE is performed the patient will no longer need to worry about cataract surgery in the future.. ...
In the process of eliminating cataracts, refractive lensectomy nowadays can also correct visual defects such as myopia, hyperopia, astigmatism, and even presbyopia. As well as eliminating the problem of clouded vision, artificial lenses allow patients to discard corrective eyewear. With refractive lensectomy it is possible to correct high refractive defects and to restore vision almost immediately. Cataracts may also be removed in patients affected by high myopia, for whom this problem occurs relatively early in life (between 50 and 60). Multifocal intra-ocular lenses (IOL) may be used to correct a range of visual defects (for example myopia and presbyopia) in a single operation, thereby ensuring optimal 360° vision both close up and at a distance.. Correcting acute visual ...
Refractive lens exchange surgery can correct both myopia, hyperopia and astigmatism whilst preventing or removing cataracts in one simple, permanent lens replacement procedure.. Ideal for the over 50s, the refractive lens exchange procedure permanently replaces the natural lens of the eye with a multifocal artificial lens. The aim of the procedure is to significantly reduce and in many cases eliminate the need for bifocal, multifocal or reading glasses.. Learn more about Refractive Lens Exchange. ...
As a part of Göteborg Energis work towards a smarter electric grid, the company has chosen to investigate the possibilities of automation in their middle voltage grid. In Europe, there are example cases where these technologies already are installed which many articles on the CIRED conference 2011 proved. Netcontrol Oy in Finland has, together with Tekla, created an automated SCADA system that Vattenfall in Finland today uses. The grid mainly consists of 10 kV open loop fed city grid and this automation is mainly designed for this type of grid. The intention of the automation is to when a fault occurs, the automation disconnects the faulted cable in the loop and then reconnects, this in as little time as possible in order to not make customers suffer.There are several different theories about how automation can be implemented, the two main principles are local automation and centralized automation. The local automation is implemented at station level with fault detectors that communicate with ...
Urea selective catalytic reduction (SCR) is a key technology for heavy-duty diesel engines to meet the increasingly stringent nitric oxides (NOx) emission limits of regulations. The urea water solution injection control is critical for urea SCR systems to achieve high NOx conversion efficiency while keeping the ammonia (NH3) slip at a required level. In general, an open loop control strategy is sufficient for SCR systems to satisfy Euro IV and Euro V NOx emission limits. However, for Euro VI emission regulation, advanced control strategy is essential for SCR systems due to its more tightened NOx emission limit and more severe test procedure compared to Euro IV and Euro V. This work proposed an approach to achieve model based closed loop control for SCR systems to meet the Euro VI NOx emission limits. A chemical kinetic model of the SCR catalyst was established and validated to estimate the ammonia storage in the SCR catalyst ...
Urea selective catalytic reduction (SCR) is a key technology for heavy-duty diesel engines to meet the increasingly stringent nitric oxides (NOx) emission limits of regulations. The urea water solution injection control is critical for urea SCR systems to achieve high NOx conversion efficiency while keeping the ammonia (NH3) slip at a required level. In general, an open loop control strategy is sufficient for SCR systems to satisfy Euro IV and Euro V NOx emission limits. However, for Euro VI emission regulation, advanced control strategy is essential for SCR systems due to its more tightened NOx emission limit and more severe test procedure compared to Euro IV and Euro V. This work proposed an approach to achieve model based closed loop control for SCR systems to meet the Euro VI NOx emission limits. A chemical kinetic model of the SCR catalyst was established and validated to estimate the ammonia storage in the SCR catalyst ...
TABLE-US-00001 TABLE 1 Table 1. Results summary of time spent over 180 mg/dL (TO180[min]) and number of hypoglycemic events (HYPO# [--]) for ten subjects in all nine experiments. Subject # Exp# 1 Exp# 2 Exp# 3 Exp# 4 Exp# 5 Exp# 6 Exp# 7 Exp# 8 Exp# 9 1 TO180 1107 1074 970 938 1006 947 919 1156 1018 Hypo# 0 0 0 0 0 0 0 0 0 2 TO180 993 587 412 221 487 189 156 1115 540 Hypo# 0 0 0 0 0 0 0 0 0 3 TO180 657 486 471 456 455 434 417 730 470 Hypo# 0 0 0 0 0 0 0 0 0 4 TO180 1140 587 480 466 57 0 0 1147 155 Hypo# 0 0 0 0 0 0 0 0 0 5 TO180 708 635 538 485 208 171 160 889 405 Hypo# 0 0 0 0 0 0 1 0 0 6 TO180 1149 766 596 520 635 417 259 1150 711 Hypo# 0 0 0 0 0 0 0 0 0 7 TO180 413 428 309 291 73 56 58 739 195 Hypo# 0 0 0 0 0 0 0 0 0 8 TO180 457 855 585 523 612 475 349 1098 743 Hypo# 0 0 0 0 0 0 0 0 0 9 TO180 153 385 319 269 265 181 120 477 324 Hypo# 0 0 0 0 0 0 0 0 0 10 TO180 492 596 444 421 233 119 88 885 423 Hypo# 0 0 0 0 0 0 0 0 0 As noted, Exp#8 (Experiment # 8, open loop with 40%) meal uncertainty, ...
This section of the course reinforces the material taught in the lecture notes. There are two parts which are outlined below. Firstly there are a couple of simulations which cover tuning a controller using the Zeigler Nichols open loop method. Then there are a number of tutorials on all aspects of this part of the course both controlling simple processes and simple controller design. ...
Houston LASIK & Eye is pleased to offer Toric intraocular lens implant for individuals who want independence from glasses or contacts.
AIM: To report a case of successful drainage of a large pre-macular haemorrhage using laser photo-disruption of the posterior hyaloid membrane. MATERIALS AND METHODS: A case report. RESULTS: A 47-year-old man presented acutely to our emergency department complaining of a 24-h history of sudden onset, painless and persistent loss of vision in his left eye. Immediately before noticing this loss of vision, he had been vomiting violently from excessive alcohol intake. The left visual acuity was counting fingers. Dilated fundoscopy of the left eye revealed a large pre-macular haemorrhage which was 14 disc diametres in size. Clotting investigations were normal. A diagnosis of valsalva retinopathy was made and the patient elected to receive a prompt neodymium-doped yttrium aluminium garnet (Nd:YAG) laser posterior hyaloidotomy as an outpatient. At 1 week follow-up, the haemorrhage had drained completely into the vitreous space revealing a healthy macula and the visual acuity had improved to 6/12 ...
Ahmadi, M. and Naderi Beni, Z. and Naderi Beni, A. and Kianersi, F. (2017) Efficacy of neodymium-doped yttrium aluminum garnet laser iridotomies in primary angle-closure diseases: superior peripheral iridotomy versus inferior peripheral iridotomy. Current Medical Research and Opinion, 33 (4). pp. 687-692. Ahmadi, M. and Rostamzadeh, A. and Fathi, F. and Mohammadi, M. and Rezaie, M.J. (2017) The effect of Melatonin on histological changes of ovary in induced polycystic ovary syndrome model in mice. Middle East Fertility Society Journal. Ahmadi, M. and Ghanbari, H. and Naderi Beni, A. and Naderi Beni, Z. and Kianersi, F. (2015) Anti-vascular Endothelial Growth Factor for Choroidal Neovascularization Associated with Toxoplasmosis: A Case Series. J Clin Exp Ophthalmol, 6. Ahmadi, M. and Poormansouri, S. (2015) Effectiveness of self- management educational program on fatigue in sickle cell patients. Journal of Clinical Nursing and Midwifery, 4. Mohammadian-Hafshejani, A. and Mosleh, N. and Shomali, ...
Among available methods for treating astigmatism in cataract surgery, the implantation of toric IOLs is an emerging technology that shows promising results. Similar to implanting a one-piece acrylic lens, toric IOLs provide good distance vision and, in many patients, freedom from spectacles for distance vision. A low absolute residual refractive cylinder has been associated with the implantation of toric IOLs, and the safety profile for toric IOLs has been good. As improvements with regard to rotational stability and treatment and cylinder power range are made, toric IOLs will emerge as an effective, safe treatment option for correcting astigmatism during cataract surgery.. Further, to evidence on the safety and efficacy of TORIC IOL for patients having cataract associated with astigmatism served as the basis for us to identify the published literature on the safety and efficacy of TORIC IOL implantation in the treatment of cataract associated with astigmatism, thus provide a background for the ...
Among available methods for treating astigmatism in cataract surgery, the implantation of toric IOLs is an emerging technology that shows promising results. Similar to implanting a one-piece acrylic lens, toric IOLs provide good distance vision and, in many patients, freedom from spectacles for distance vision. A low absolute residual refractive cylinder has been associated with the implantation of toric IOLs, and the safety profile for toric IOLs has been good. As improvements with regard to rotational stability and treatment and cylinder power range are made, toric IOLs will emerge as an effective, safe treatment option for correcting astigmatism during cataract surgery.. Further, to evidence on the safety and efficacy of TORIC IOL for patients having cataract associated with astigmatism served as the basis for us to identify the published literature on the safety and efficacy of TORIC IOL implantation in the treatment of cataract associated with astigmatism, thus provide a background for the ...
The self securing suture includes a suture having at least one terminal end and a toggle, formed of suture material, at the sutures terminal end. In one embodiment, the suture toggle is a bar. In another embodiment the suture is a wire and the toggle is a wire element toggle. The wire element toggle is a double strand segment or an open loop segment. The suture delivery system includes a slotted needle configured such that a protruding tab or leg of the toggle bar fits within slot of the needle. For wire sutures, the open loop wire element toggle fits within the slotted needle. In another embodiment, a depending wire tip, from the wire element toggle, fits within the slot in the needle. In either situation, after the needle pierces the bodily structure, tissue or organ, the tab, leg, depending wire tip or open loop wire segment coacts with the inboard portion of the bodily structure, tissue or organ, and, as the delivery needle is withdrawn, the toggle at the terminal end of the suture remains in the
Abstract:Image-guided system (IGS, Verion®) compared with manual marking method for toric intraocular lens implantation.Purpose: To evaluate the difference between the preoperative marking methods for toric intraocular lens implantations using the Image guided system (IGS, Verion®), compared to using the manual marking method.
IOLs are used for vision correction and the process is known as refractive lens exchange. IOL is a synthetic artificial lens. The lens is implanted to replace the eyes natural lens. Glasses may be required after surgery for reading and short or long distance sight depending on the power of lens used. Several types of IOLs are available in the market and can be differentiated into four major segments: monofocal IOLs, multifocal IOLs, toric IOLs, and accommodative IOLs. The US FDA had approved IOLs for implantation. The ideal IOLs tend to provide benefit to the surgeon as well as the individual. The surgeon looks for ease of implantation and lack of intraoperative complications, the individual asks for better vision and refractive stability. Foldable IOLs are preferred in recent times ...
Low Risk. High Reward.. Cataract surgery is a safe and effective way to restore vision. Its usually done on an outpatient basis and only requires a short recovery period. The surgery generally completes the procedure in 10 to 15 minutes, and severe complications are rare. After cataract surgery, patients can resume most of their normal activities the following day.. Cataract Treatment. The surgery involves removing the patients cloudy lens and replacing it with an artificial lens called an IOL, or intraocular lens. An IOL is a clear, plastic lens that requires no care and becomes a permanent part of the eye. Click ...
Treatment. Cataract surgery is a low-risk treatment that effectively restores vision. The surgery is usually done on an outpatient basis, it generally takes less than fifteen minutes and serious complications are rare. The recovery period is relatively short, and you can resume most of your normal activities the following day.. Procedure. Cataract surgery involves removing the eyes cloudy lens and replacing it with an artificial lens called an IOL, or intraocular lens. An IOL is a clear, plastic lens that requires no care and becomes a permanent part of your eye. Click ...
There are two main types of cataract surgery procedures: phacoemulsification and laser.. Phacoemulsification involves using ultrasound waves to break up the formed cataract. The cataract pieces are then gently suctioned out of the lens capsule. A new, artificial lens, one that is clear, is inserted and positioned precisely where the cloudy lens used to be.. Advances in technology have provided other options other than the mono-focal lens used previously in phacoemulsification procedures. An inserted Toric lens can also correct distance vision while a multi-focal inter-ocular lens (IOL) corrects both near- and far-sightedness.. Laser technology, the exact technology used in Lasik surgeries, can also be used to remove cataracts. This technology, known as femtosecond laser technology, uses an accurate, predictable and safe laser to make the corneal incision, gain access to the cataract through the lens capsule, and break up the cataract tissue for easy removal. Using a laser also makes it less ...
There are two main types of cataract surgery procedures: phacoemulsification and laser.. Phacoemulsification involves using ultrasound waves to break up the formed cataract. The cataract pieces are then gently suctioned out of the lens capsule. A new, artificial lens, one that is clear, is inserted and positioned precisely where the cloudy lens used to be.. Advances in technology have provided other options other than the mono-focal lens used previously in phacoemulsification procedures. An inserted Toric lens can also correct distance vision while a multi-focal inter-ocular lens (IOL) corrects both near- and far-sightedness.. Laser technology, the exact technology used in Lasik surgeries, can also be used to remove cataracts. This technology, known as femtosecond laser technology, uses an accurate, predictable and safe laser to make the corneal incision, gain access to the cataract through the lens capsule, and break up the cataract tissue for easy removal. Using a laser also makes it less ...
The symptoms of early cataract may be improved with new eyeglasses, brighter lighting, anti-glare sunglasses, or magnifying lenses. If these measures do not help, surgery is the only effective treatment. Surgery involves removing the cloudy lens and replacing it with an artificial lens.. A cataract needs to be removed only when vision loss interferes with your everyday activities, such as driving, reading, or watching TV. You and your eye care professional can make this decision together. Once you understand the benefits and risks of surgery, you can make an informed decision about whether cataract surgery is right for you. In most cases, delaying cataract surgery will not cause long-term damage to your eye or make the surgery more difficult. You do not have to rush into surgery.. Sometimes a cataract should be removed even if it does not cause problems with your vision. For example, a cataract should be removed if it prevents examination or treatment of another eye problem, such as age-related ...
Cataract - Lens Replacement Eye Surgery Animation , Cataract - Lens Replacement Eye Surgery. This medical animation shows the extracapsular removal of a cloudy lens, and the placement of an artificial lens in a patient with a cataract. This animation may be customized in any way you desire, including adding new footage, labels, voiceover narration, or interactivity.
Page contains details about DSPE-PEG-NH2-coated sodium gadolinium fluoride-coated neodymium-doped sodium gadolinium fluoride nanoparticles . It has composition images, properties, Characterization methods, synthesis, applications and reference articles : nano.nature.com
This study is being done to collect more information about the safety and effectiveness of TECNIS Toric intraocular lenses (IOLs), Models ZCT300 and ZCT400...
According to a report on CBS News, a Facebook group called "Essure Problems" currently has more than 34,000 members. The group shares their stories and complaints about the device, which has been linked to chronic pain, bleeding, implant migration and the need for surgery to remove the device. The most common side effects associated with Essure include pain, hemorrhaging, headaches, menstrual irregularities, weight fluctuation, device migration and suspected nickel allergy. Some women have reportedly had a hysterectomy or other procedures to remove coils ...
A light clock measures time by having a light pulse source initiating a light pulse which travels a preset distance in an open or closed loop. A counter is increases incrementally upon detection of the light pulse by a light pulse detector. Each increment is a time interval, which is determined by the preset distance divided by the speed of the light pulse. If the loop is an open loop, another light pulse may be initiated upon detection of the previous light pulse. If the loop is a closed loop, no further light pulse initiation beyond the initial light pulse is required, but, when necessary, a light pulse amplifier is used to amplify the light pulse for the next cycle around the closed loop in the light pulse transmission device.
The present paper is focused on techniques aimed at including hydraulic servo-actuator dynamics into linear flutter equations.A large aircraft has been taken as test case for setting up the methodology. The hydraulic servo-actuator pertains the elevator. Without losing generality symmetric modal association has been used. The extra degrees of freedom of the control surface and additional terms due to the actuator have been modeled by means of dynamic sub-structuring approach.Starting from a set of flutter analyses performed at different stiffness values of the control surface rotational degree of freedom a minimum requirement for the elevator stiffness is obtained. This value has been used for a preliminary design of the hydraulic servo-actuator, allowing its subsequent dynamic characterization.The next step has been the inclusion of the servo-actuator dynamics into flutter equations (open loop flutter). The equations governing the dynamics of the servo-actuator are added to the aeroelastic ...
Both hdrophylic acrylic IOL design showed excellent postoperative rotational stability between day 1 and month 3. Intraperative misallignment of toric IOL seems to be the major cause for unsatisfactory refractory results. FINANCIAL INTEREST: ... receives consulting fees, retainer, or contract payments from a company producing, developing or supplying the product or procedure presented, ... travel has been funded, fully or partially, by a competing company, ... travel has been funded, fully or partially, by a company producing, developing or supplying the product or procedure presented, ... research is funded, fully or partially, by a competing company, ... research is funded, fully or partially, by a company producing, developing or supplying the product or procedure presented, ... receives consulting fees, retainer, or contract payments from a competing company Back to previous ...
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The best candidates for multifocal intraocular lenses (IOLs) are highly motivated, have nearly perfect optics, and have healthy tear film. Otherwise, patients could have issues with contrast sensitivity, glare, and haloes. ...
This superb wide angle prime remains true to the original Sonnar concept with a bright F2.8 maximum aperture. A perfect match for α7 series full frame bodies, with outstanding optical performance in a versatile 35mm focal length, this ZEISS lens delivers superior contrast and resolution throughout the image
This article described the new Trulign toric intraocular lens implant for patients with astigmatism undergoing cataract surgery in our state-of-the-art surgical center (ASC) in Millville New Jersey.
Sachin, G Roy (2006) An Epidemiological Study on Chronic Bacterial Folliculitis. Masters thesis, Madras Medical College, Chennai. Samuel Jeyaraj, Daniel (2006) A Clinico Pathological Study of 300 cases of warts in immunocompetent and immunocompromised patients. Masters thesis, Madras Medical College, Chennai. Sangeetha, K (2018) Clinico epidemiological, mycological and therapeutic study of dermatophytosis in hundred new patients. Masters thesis, Madras Medical College, Chennai. Santhiya Vadhanaa, A (2016) Clinico etiological study of allergic contact dermatitis with patch testing. Masters thesis, Tirunelveli Medical College, Tirunelveli. Saradha, K P (2008) A Clinico-Mycological study of 100 cases of Pityriasis Versicolor. Masters thesis, Madras Medical College, Chennai. Saraswathy, P (2015) Study on Linear Dermatoses. Masters thesis, Madras Medical College, Chennai. Sarathchandran, B (2018) A comparative study on efficacy of Q switched neodymium-doped yttrium aluminium garnet (Nd:YAG) laser ...
Background: Onychomycosis is one of the most prevalent fungal diseases in the general population. However, treatment is of limited effectiveness and must be administered for long periods of time. Systemic antifungal agents are associated with adverse effects. Objective: We evaluated the clinical efficacy and safety of a 1,064-nm neodymium-doped yttrium aluminium garnet (Nd:YAG) laser with amorolfine nail lacquer to treat onychomycosis. Methods: The 128 patients were randomly divided to 2 groups: 64 in the experimental group were treated with 1,064-nm Nd:YAG laser therapy and amorolfine nail lacquer; the other 64 were in a control group treated with topical amorolfine lacquer monotherapy ...
Initially we took a wait-and-see approach. Over the following years, the plaques extended to the adjacent skin and took on a more atrophic appearance, with very dilated vessels. No new lesions appeared.. At 7 years of age, the lesions were still asymptomatic, but their appearance (Fig. 1C) negatively affected the patients self-esteem, leading us to evaluate the treatment options. The size of the lesions limited a possible surgical intervention. It was decided to start treatment with combined pulsed dye (PDL) (595nm) and neodymium-doped yttrium aluminium garnet (Nd:YAG) (1064nm) lasers (Cynergy Multiplex™, Cynosure, Westford, Massachusetts, United States), with a spot size of 10mm, a PDL pulse duration of 0.5ms and fluence of 8.5-9J/cm2, followed by a pulse of Nd:YAG with a duration of 15ms and fluence of 50J/cm2. A cooling system was used simultaneously to prevent epidermal damage. The sessions were performed under general anesthesia every 2 or 3 months. The post-treatment recommendations ...
CONCORD, N.H. (AP) A falcon in New Hampshire has undergone eye surgery to remove cataracts and has received new synthetic lenses.Banner, a 4-year-old falcon, lost its sight and hasnt been able to fly or hunt for the past two years. On Monday, a team at Capital Veterinary Emergency Services in Concord removed the cataracts and put in artificial lenses in the hour-long procedure.The Concord Monitor reports (http://bit.ly/1DUMvpn) I-Med, a Canadian ophthalmology supply manufacturer, donated the 6-milimeter-wide lenses. Dozens of people in Montreal, California, Ohio, Germany and Abu Dhabi were involved in their design. A surgeon and veterinary ophthalmologist donated their time for the operation.Banners owners, Nancy and Jim Cowan of the New Hampshire School of Falconry in Deering, say its the first time this surgery has been done on a falcon.Banner will need anti-inflammatory eye drops for a few weeks to make sure her eyelids dont become too irritated by the sutures in her corneas."When we ...
The presence of more than 1.00 D of astigmatism in eyes implanted with diffractive multifocal IOLs has been shown to compromise corrected distance and distance-corrected near visual acuities. This...
Could glasses be a thing of the past with lens implants?. It may sound like science fiction but more and more people are opting to bin their reading glasses in favour of having artificial plastic lens implants inserted into their eyes instead. The procedure is becoming increasingly popular, particularly amongst middle aged people who want to avoid the possible onset of presbyopia, or the deterioration of sight related to age. It almost sounds too good to be true, but surely if it really works it could be the end to all our vision worries?. The idea of having your natural lenses removed from your eyes and replaced with a small piece of plastic might not be one for the squeamish, but in fact the procedure works surprisingly well. The number of patients opting for the surgery has doubled since 2004, with most people reporting that the implants have made a huge difference to their sight, often meaning they no longer need to wear their prescription glasses at all.. So how does it all work? Well, the ...
DENSOs oxygen sensor started to appear on vehicles with the development of fuel injection systems. The basic job of the sensor is to monitor the air fuel mixture under idle, moderate acceleration and cruise conditions. Under heavy acceleration the oxygen sensor goes into "open loop" Which basically means that the engine management computer system ignores the oxygen sensor. Oxygen sensors have a smaller range of limits in detecting and adjusting the difference from an optimum air/fuel ratio.. As the automotive industry continues to improve on their standards DENSO is keeping the pace with advancements in our engineering to meet the demands from the industry. Also as car owners are holding on to their cars for longer periods. DENSO continues to make auto parts available for those critical replacement parts.. Oxygen sensors, also known as Lambda sensors or O2 sensors among some vehicle manufacturers, are among the most sensitive and critical components on your cars engine. Earlier fuel injection ...
Downloadable (with restrictions)! This paper considers efficient and monopolistic extraction of non-renewable (energy) resources when the resource consumption leads simultaneously to a stock externality (global warming). The case of monopolistic supply leads to a dynamic game between cartelised producers and a consumers government. For this game, we compute linear Markov perfect strategies that are characterized by preemption of the tax at the wellhead (when compared with the open loop solution). Unfortunately, the general, asymmetric two-state variable model does not allow for an explicit analytical solution. Therefore, a simplified version with one state variable (neglecting depreciation of the stock of the pollutant) is studied and a numerical example is presented. It turns out that the simplified and analytically solved framework provides a good approximation of the initial phase of the transient behaviour but not of the long run. Copyright Kluwer Academic Publishers 1995
DENSOs oxygen sensor started to appear on vehicles with the development of fuel injection systems. The basic job of the sensor is to monitor the air fuel mixture under idle, moderate acceleration and cruise conditions. Under heavy acceleration the oxygen sensor goes into "open loop" Which basically means that the engine management computer system ignores the oxygen sensor. Oxygen sensors have a smaller range of limits in detecting and adjusting the difference from an optimum air/fuel ratio.. As the automotive industry continues to improve on their standards DENSO is keeping the pace with advancements in our engineering to meet the demands from the industry. Also as car owners are holding on to their cars for longer periods. DENSO continues to make auto parts available for those critical replacement parts.. Oxygen sensors, also known as Lambda sensors or O2 sensors among some vehicle manufacturers, are among the most sensitive and critical components on your cars engine. Earlier fuel injection ...
Health,... Clinical study compares rotational stability of two differently desi...JACKSONVILLE Fla. Dec. 5 /- For contact lens wearers wh...(Photo: A HREF http://www.newscom.com/cgi-bin/prnh/20071205/CLW016 ...According to the study which used a novel infrared video-basedtech...,Contact,Lens,Shift,Can,Compromise,Vision,of,People,with,Astigmatism,with,the,Blink,of,an,Eye,medicine,medical news today,latest medical news,medical newsletters,current medical news,latest medicine news
Multifocal Lens Implants Lexington KY - Kentucky Eye Center offers Multifocal Lens Implants. Our practice serves Lexington KY and surrounding areas.
Superior optical performance and large f/1.2 aperture Faster ring-type USM, high-speed CPU and optimized AF algorithms High-speed AF and circular aperture for beautiful backgrounds Floating optical system includes an aspherical lens element
Shelton Cataract Surgeon James Pinke is trained in the use of all 3 types of lens implants and individualizes the choice based on the needs of each patient.
Results Sphere changed from −1.77±6.57D (−11.00 to 7.00) preoperatively to 0.08±0.79D (−1.25 to 1.75) postoperatively (p=0.211), and cylinder changed from −2.95±1.71D (−7.00 to −0.75) to −1.40±1.13D (−3.25 to 0.00) (p=0.016). UDVA (logMAR) changed from 1.33±0.95 (0.40 to 2.77) to 0.32±0.38 (0.00 to 1.30) (p=0.008) and CDVA (logMAR) changed from 0.32±0.45 (0.01 to 1.77) to 0.20±0.36 (−0.03 to 1.30) (p=0.013). Efficacy and safety indexes were 1.38±0.58 and 1.17±0.66, respectively. Refraction and corneal topography were stable during the follow-up (9.10±5.54 months, 3-15). ...
Cataract surgery is a very common procedure with low risks involved. Less than a single percent of patients will suffer from any serious complications that will necessitate further surgeries. If complications do arise, these are, more often than not, successfully treated through additional procedures.. While it is possible that your vision may get worse or that permanent damage may occur after the cataract surgery, these cases are extremely rare. Still, a comprehensive consultation with your eye doctor should be done so that you will be fully informed of all the possible risks.. Posterior Capsule Opacification. The most common risk that a cataract patient may encounter after surgery is the development of a condition called posterior capsule opacification, or PCO. In this condition, a portion of the capsule of your lens may thicken and lead to a cloudy vision. While some may mistake this as a sign of the cataract returning, it is actually cells growing at the back of the artificial lens.. This is ...
Dr. David Wilkie was chosen as the recipient of the 2017 American Association of Veterinary Clinicians (AAVC) Clinical Faculty Achievement Award. All member institutions of the AAVC are allowed to nominate one faculty member annually for this award. The Clinical Faculty Achievement Award is given to one member of the AAVC who, for at least five years, has achieved recognition for his or her efforts on behalf of veterinary medicine.. Dr. Wilkie is a professor and Chair of the Department of Veterinary Clinical Sciences and is currently the Editor-in-Chief for the journal of Veterinary Ophthalmology. He is an international speaker having presented seminars in the USA, Canada, Japan, Germany, Italy, Spain, Denmark, Netherlands, Great Britain, Russia, Slovenia, Finland, Ireland and Switzerland. He has twice been nominated for the Norden Distinguished Teacher Award. Dr Wilkies areas of interest include Ocular Pharmacology, Intraocular Surgery, and Artificial Lens Implantation. The award was presented ...
The Operating Unit conducts outpatient diagnostic testing, therapeutic services and surgical activity following the Day Hospital program and hospitalization.. The team carries out interventions for cataracts with a phacoemulsification ultrasound technique and implantation of artificial lens for glaucoma and congenital strabismus (both childhood and paralytic strabismus), after functional assessment by the department of pediatric ophthalmology and orthoptics.. The Unit also deals with retinal diseases (retinal detachment, vitrectomy), cornea transplant , stem cell therapy, amniotic membrane transplant, as well as refractive laser eye surgery for the correction of myopia, astigmatism, hyperopia, and presbyopia.. Surgical interventions that are also performed include tear duct surgery, eyelid surgery, orbital surgery and outpatient laser treatments used to treat glaucoma, retinal diseases, and secondary cataract; while diagnostic tests are effective for examinations such as as retinal fluorescein ...
D. A. Guilhot, G. D. Emmerson, C. B. E. Gawith, S. P. Watts, D. P. Shepherd, R. B. Williams, and P. G. R. Smith, "Single-mode direct-ultraviolet-written channel waveguide laser in neodymium-doped silica on silicon," Opt. Lett. 29, 947-949 (2004 ...
Modern cataract surgery has seen many advances during the last few years. The intraocular lenses which are placed at the time of cataract surgery can now offer correction of astigmatism, nearsightedness and farsightedness. There are also special lenses which can correct both near and distance vision.. The astigmatism correcting lenses are called Toric intraocular lenses. Astigmatism means the eye has different radii of curvature in the vertical and horizontal axes, as would a football laying on the ground. In the past, these patients would require glasses to correct the astigmatism after their cataract surgery. Now they can have good distance vision without glasses in most cases.. Another really exciting new development is the advent of lenses which correct for both distance and near. There are two types of lenses in this category, Multifocal lenses and Accomodating lenses. Multifocal lenses have rings which allow the patient to have two focal points, one for far and one for near. Accomodating ...
Storrer, J., and Cruse, Holk. 1977. "Systemanalytische Untersuchung eines aufgeschnittenen Regelkreises, der die Beinstellung der Stabheuschrecke Carausius morosus kontrolliert: Kraftmessungen an den Antagonisten Flexor und Extensor tibiae: Open Loop Analysis of a Feedback Mechanism Controllingthe Leg Position in the Stick Insect Carausius morosus: Measurements of the Forces Produced by the Flexor and Extensor Tibiae Muscles". Biological cybernetics 25 (3): 131-142 ...
Learn more about the lens implants offered at LASIK MD. LASIK MD offers the highest standard of laser eye surgery at the most affordable price.
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What to expect with Toric Lens Implant for cataract patients with astigmatism. Leaders in refractive cataract eye surgery in the Dallas Fort Worth Metroplex
Tokai Lutina Resonas WS Double Aspheric Neuroscience Technology varifocal Tokai presents a revolutionary new superior type of varifocal lens which are not just an item for vision correction but also an item to save the eyes. Age-related Macular Degeneration is the most common cause of vision loss for the age group 50+. Tokai Lutina will reduce the amount of UV rays and protect the essential Lutein within the eyes. Give your eyes the best quality in progressive, protective lenses: Lutina Resonas WS Aspheric Neuroscience! · This lens combines the advantages of the Resonas design in a WS lens. WS has the combined aspheric front curve which highly improves the aesthetic and the optical performance of the lens. The result of this, better image perception to the brain · The fusion of the Resonas technology with the WS lens resulted in the development of the Resonas WS lens, the most advanced progressive lens with unequalled optical performance, aesthetic features and wearer comfort · Combined ...
Tokai Lutina Resonas WS Double Aspheric Neuroscience Technology varifocal Tokai presents a revolutionary new superior type of varifocal lens which are not just an item for vision correction but also an item to save the eyes. Age-related Macular Degeneration is the most common cause of vision loss for the age group 50+. Tokai Lutina will reduce the amount of UV rays and protect the essential Lutein within the eyes. Give your eyes the best quality in progressive, protective lenses: Lutina Resonas WS Aspheric Neuroscience! · This lens combines the advantages of the Resonas design in a WS lens. WS has the combined aspheric front curve which highly improves the aesthetic and the optical performance of the lens. The result of this, better image perception to the brain · The fusion of the Resonas technology with the WS lens resulted in the development of the Resonas WS lens, the most advanced progressive lens with unequalled optical performance, aesthetic features and wearer comfort · Combined ...
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PURPOSE To evaluate the uveal and capsular biocompatibility of hydrophilic acrylic, hydrophobic acrylic, and silicone intraocular lenses (IOLs) in eyes with uveitis. SETTING Department of Ophthalmology, University of Vienna, Vienna, Austria. METHODS This prospective study comprised 72 eyes with uveitis and 68 control eyes having phacoemulsification and IOL implantation by 1 surgeon. Patients received 1 of the following IOLs: foldable hydrophilic acrylic (Hydroview, Bausch & Lomb), hydrophobic acrylic (AcrySof, Alcon), or silicone (CeeOn 911, Pharmacia). Postoperative evaluations were at 1, 3, and 7 days and 1, 3, and 6 months. Cell reaction was evaluated by specular microscopy of the anterior IOL surface and the anterior and posterior capsule reaction, by biomicroscopy. RESULTS Small round cell deposition was observed on all IOLs in the immediate postoperative period, especially in eyes with uveitis. This reaction decreased 3 to 6 months after surgery. Although the CeeOn 911 had a higher mean
AIM: To evaluate the clinical utility of automated refraction (AR) and keratometry (KR) compared with subjective or manifest refraction (MR) after cataract or refractive lens exchange surgery with implantation of Lentis Mplus X (Oculentis GmbH) refractive multifocal intraocular lens (IOL). METHODS: Eighty-six eyes implanted with the Lentis Mplus X multifocal IOL were included. MR was performed in all patients followed by three consecutive AR measurements using the Topcon KR-8000 autorefractor. Assessment of repeatability of consecutive AR before and after dilation with phenylephrine 10%, and comparison of the AR and KR with MR using vector analysis were performed at 3mo follow-up. RESULTS: Analysis showed excellent repeatability of the AR measurements. Linear regression of AR versus MR showed good correlation for sphere and spherical equivalent, whereas the correlation for astigmatism was low. The mean difference AR-MR was -1.28 0.29 diopters (D) for sphere. Astigmatism showed better correlation
A surface treated intraocular lens implant for use in the replacement of a cataractous natural lens to prevent posteriror capsular opacification. The surface treated intraocular lens includes one or more proteins, polypeptides, polyamino acids or polyamines bound to the surface of the intraocular lens implant covalently, non-covalently or a combination thereof. The one or more proteins, polypeptides, polyamino acids or polyamines present on the surface of the intraocular lens implant serves to reduce or eliminate residual lens epithelial cell migration within the lens capsule. By preventing residual lens epithelial cell migration, posterior capsular opacification of the intraocular lens implant is thus reduced or eliminated.
... artificial hip joints, bone cements, dental composite materials (white fillings) and even in breast implants. Many implantable ... Many high-quality flashlights use borosilicate glass for the lens. This increases light transmittance through the lens compared ... The chemical resistance of borosilicate glass minimizes the migration of sodium ions from the glass matrix, thus making it well ... Main use in lens and mirrors for laser, cameras and telescopes. Duran of DURAN Group, similar to Pyrex, Simax or Jenaer Glas. ...
After lens removal, an artificial plastic lens (an intraocular lens implant) can be placed in either the anterior chamber or ... the posterior capsular cells undergo hyperplasia and cellular migration, showing up as a thickening, opacification and clouding ... an artificial intraocular lens implant is inserted (eye surgeons say that the lens is "implanted"). Cataract surgery is ... Artificial intraocular lenses are used to replace the eye's natural lens that is removed during cataract surgery. These lenses ...
... a technique that seems to improve implant movement and reduce the incidence of implant migration. Porous implants may be ... integrated implants' that are directly connected to the artificial eye. Historically, implants that directly attached to the ... replacement intraocular lenses when the original lens has been removed in the treatment of cataracts and has historically been ... Moreover, the concern is that imbrication of the recti over nonintegrated implants actually can result in implant migration. ...
Google's DeepMind AlphaGo artificial intelligence defeats South Korea's Lee Se-dol in the first of a series of Go games in ... "Implant lets paralysed man 'play guitar'". BBC News. 13 April 2016. Retrieved 14 April 2016. "The feeble giant. Discovery of a ... Zimmer, Carl (21 September 2016). "How We Got Here: DNA Points to a Single Migration From Africa". New York Times. Retrieved 22 ... by using hundreds to thousands of tiny lenses. The diameter does not change, but the SPIDER system is thinner and does not need ...
In some cases implants contain electronics e.g. artificial pacemaker and cochlear implants. Some implants are bioactive, such ... Therefore, concerns have been raised regarding the loosening and migration of implant, heating of the implant metal which could ... Examples include the intraocular lens, intrastromal corneal ring segment, cochlear implant, tympanostomy tube, and ... The many examples of implant failure include rupture of silicone breast implants, hip replacement joints, and artificial heart ...
Cell migration[edit]. Cell migration is essential for the formation of granulation tissue.[18] The early stage of granulation ... One in vivo study, where HA hydrogels with endothelial colony forming cells were implanted into mice three days after hydrogel ... In the late 1970s, intraocular lens implantation was often followed by severe corneal edema, due to endothelial cell damage ... Hyaluronic acid has been used in various formulations to create artificial tears to treat dry eye.[31] ...
Bioglass implants can be used in non-load-bearing applications, for buried implants loaded slightly or compressively. Bioglass ... Without additional antimigration coating it is subject to migration in the tissue. The antimigration coating is a material that ... Sometimes, Bioglass can be converted into an artificial cocaine. This has no known side-effects.[7] ... The most common use of Bioglass 8625 is in the housings of RFID transponders for use in human and animal microchip implants. It ...
For receiving sound) Cochlear implants (CIs), auditory brain stem implants (ABIs), and auditory midbrain implants (AMIs) are ... Blindness can result from damage to the optical pathway (cornea, aqueous humor, crystalline lens, and vitreous). This can ... This reprogramming option compensates for postural changes, electrode migration, changes in pain location, and suboptimal ... "The artificial silicon retina microchip for the treatment of vision loss from retinitis pigmentosa," Arch.Ophthalmol., vol. 122 ...
The lens is mostly spherical, and much of the retina is equidistant from the lens center. The cornea has a flattened center ... The northern elephant seal has one of the longest recorded migration distances for a mammal, at 18,000-21,000 km (11,000-13,000 ... Some modern exhibits have rocky backgrounds with artificial haul-out sites and a pool, while others have pens with small rocky ... wherein the embryo remains in suspended development for weeks or months before it is implanted in the uterus. Delayed ...
"Super-small transistor created: Artificial atom powered by single electron". Nature Nanotechnology. Science Daily. 6: 343-347. ... as part of the migration in client side scripting toward HTML5.[109] ... Bionic contact lens. *Head-mounted display. *Head-up display. *Optical head-mounted display ...
Artificial neural network with two layers, an interconnected group of nodes, akin to the vast network of neurons in the human ... One of the dogs used in Pavlov's experiment with a surgically implanted cannula to measure salivation, preserved in the Pavlov ... Cecilia Taiana, "Transatlantic Migration of the Disciplines of Mind: Examination of the Reception of Wundt's and Freud's ... that applies transnational feminist lenses to the field of psychology to study, understand, and address the impact of ...
Kastner, M. A. (1993). "Artificial Atoms". Physics Today. 46 (1): 24-31. Bibcode:1993PhT....46a..24K. doi:10.1063/1.881393.. ... The ability to image single-cell migration in real time is expected to be important to several research areas such as ... Bionic contact lens. *Head-mounted display. *Head-up display. *Optical head-mounted display ... Ashoori, R. C. (1996). "Electrons in artificial atoms". Nature. 379 (6564): 413-419. Bibcode:1996Natur.379..413A. doi:10.1038/ ...
Cell migrationEdit. Cell migration is essential for the formation of granulation tissue.[26] The early stage of granulation ... One in vivo study, where HA hydrogels with endothelial colony forming cells were implanted into mice three days after hydrogel ... In the late 1970s, intraocular lens implantation was often followed by severe corneal edema, due to endothelial cell damage ... Hyaluronic acid has been used in various formulations to create artificial tears to treat dry eye.[44] ...
Artificial Lens Implant Migration/surgery , Lens Implantation, Intraocular/methods , Lenses, Intraocular/adverse effects , ... Artificial Lens Implant Migration/physiopathology , Lens Implantation, Intraocular/adverse effects , Medical Records , ... In the present retrospective case series, management of dislocated IOLs with repositioning or exchange of the primary implant ... Surgical management of intraocular lens dislocations / Tratamento cirúrgico dos deslocamentos de lentes intraoculares ...
By preventing residual lens epithelial cell migration, posterior capsular opacification of the intraocular lens implant is thus ... surface of the intraocular lens implant serves to reduce or eliminate residual lens epithelial cell migration within the lens ... polyamino acids or polyamines bound to the surface of the intraocular lens implant covalently, non-covalently or a combination ... The surface treated intraocular lens includes one or more proteins, polypeptides, ...
Class name: Eye prosthesis (e.g., lens or corneal implant, or artificial eye, etc.) intraocular lens focal power of lens can be ... In particular, an intraocular implant which implanted between an intraocular lens and the surface of the posterior capsule of ... In particular, an intraocular implant which implanted between an intraocular lens and the surface of the posterior capsule of ... In particular, an intraocular implant which implanted between an intraocular lens and the surface of the posterior capsule of ...
The capsule is left behind after cataract removal and is the receptacle for the artificial lens implant. PCO occurs when lens ... prior to artificial lens implantation, in order to prevent subsequent regrowth and migration of these cells. Laser therapy and ... 0036]c) detecting any increase in pigmentation in the lens epithelial cells within said lens capsule and/or in cultured lens ... to prevent or treat lens epithelial cell re-growth over lens implants, that is, the complication of posterior capsule ...
Cell Migration on Artificial Surfaces 28 A . Mechanisms of cell migration 28 B . Cell migration on implants in vivo. 30 C. ... 600,000 artificial lenses and corneas; 250,000 total or partial hip implants; 100,000 2 knee prostheses; 400,000 finger joint ... Cell Migration on Artificial Surfaces. 28 IV. Wound Healing 32 V . Complications and failure modes of percutaneous implants 49 ... B. Cell migration on implants in vivo It should be noted that the relationship of cell to implant is not necessarily a static ...
One patient with an artificial iris and a scleral fixated lens presented with the implant in the posterior chamber and another ... an iris defect or vitrectomized pseudophakic patients had a risk for migration of the implant into the anterior chamber (6 ... Patients after complicated cataract surgery or with special lenses (e.g. iris- or scleral-fixated intraocular lens), ... In one case, the implant was stuck in the sclera due to early retraction of the needle while injecting. One eye was treated ...
... having a lens body and resilient lens centering strands. The strands extend from the lens body and curve behind and underneath ... posterior capsule of the eye and creates a space between the lens body and posterior capsule which prevents damage to the lens ... a rear surface of the lens body before curving radially outwardly for engaging eye tissue. The portion of the strands curving ... An intraocular lens is provided for implantation in a human eye, preferably after extracapsular cataract extraction, ...
Artificial Lens Implant Migration/surgery , Lens Implantation, Intraocular/methods , Lenses, Intraocular/adverse effects , ... Artificial Lens Implant Migration/physiopathology , Lens Implantation, Intraocular/adverse effects , Medical Records , ... Results: Both of the patients had well centered lenses postoperatively. Corrected distant and near visual acuities of the ... In the present retrospective case series, management of dislocated IOLs with repositioning or exchange of the primary implant ...
Selective control of cellular response to polymeric biomaterials is an important consideration for many ocular implant ... Ocular biomaterials and implants. Biomaterials. 2001;22(8):769-85.CrossRefPubMedGoogle Scholar ... Keratoprostheses: advancing toward a true artificial cornea. Surv Ophthalmol. 1997;42(2):175-89.CrossRefPubMedGoogle Scholar ... Correlation between substratum roughness and wettability, cell adhesion, and cell migration. J Biomed Mater Res. 1997;36(1):99- ...
The method of implanting the lens in the eye and the method of making the lens are also disclosed. ... The lens provides multiple focuses as the result of a bi-directional shift along the eyes optical axis, and also minimizes or ... The lens includes a first component which consists of an optical body and a haptic body, a second component which is ... structurally adapted to maintain substantial contact with the posterior surface of the capsular bag of the eye (when implanted ...
Artificial Lens Implant Migration. *Cataract. *Lens Subluxation. Below are MeSH descriptors whose meaning is more specific than ... Partial or complete opacity on or in the lens or capsule of one or both eyes, impairing vision or causing blindness. The many ... Kanner EM, Netland PA, Sarkisian SR, Du H. Ex-PRESS miniature glaucoma device implanted under a scleral flap alone or combined ...
... artificial,compound,eye,biological,biology news articles,biology news today,latest biology news,current biology news,biology ... Lees team has shown that the lenses and waveguides of the artificial eyes focus and conduct light in the same way as an ... Vital step in cellular migration described by UCSD medical researchers. 6. ASU researchers finds novel chemistry at work to ... and a number of clinical treatments that can be controlled by implanted light delivery devices. ...
Four months after the accident, the man had surgery to remove the cataracts and implant a new lens, and his vision improved ... For patients whose bodies reject a transplanted or artificial cornea, this procedure "implants the patients tooth in the eye ... to sense the Earths magnetic field is crucial to navigating the long-distance voyages these animals undertake during migration ... causing nearsighted vision and a lifetime of corrective glasses or contact lenses. No More Readers? New Implant May Help Aging ...
The intraocular lens is designed with specific flexibility characteristics so as to exhibit greater than approximately 1.0 mm ... An accommodating intraocular lens including an optic portion having an outer peripheral edge and two, three or four balanced ... the eyes optical axis under a compression force suitable to effect a 1.0 mm in diameter compression of the intraocular lens. ... Accommodating intraocular lens. US5578081 *. 30 Oct 1995. 26 Nov 1996. Henry H. McDonald. Eye muscle responsive artificial lens ...
Synthetic materials have been used in many areas of medical treatment including artificial ocular lenses, heart valves, bypass ... implants, artificial hearts, dialysis tubes and similar devices, having improved antimicrobial/antithrombogenic properties, and ... Ionophores chelate with charged species and allow electro-migration of these charged species in neutral lipophilic solutions ... Antimicrobial Implant with a Flexible Porous Structure. US20090074826 *. 22 Ago 2008. 19 Mar 2009. Noble Fiber Technologies, ...
... fibular artery implants, plantar artery implants, dorsalis-pedis artery implants, arterial-venous fistulae, and venous implants ... foldable polymer materials suitable for use in artificial lenses. There are three major categories of these polymers, i.e., ... As a result, cell migration between the back of the IOL and the posterior capsule of the eye [a process that often results in ... coronary artery implants, femorofemoral artery implants, femoral-poplitial artery implants, femoro-tibial artery implants, ...
5) Artificial Eye Motility: Implant Pegging Procedures. a) To peg or not to peg? One of the many advantages of porous implants ... The implant becomes more fixed and therefore resists migration. The implant allows attachment of the extraocular muscles which ... b) Evisceration Surgery - Evisceration surgery refers to the removal of the inside contents of the eye (cornea, iris, lens, ... The hydroxyapatite implant, also known as the Bio-Eye™ (integrated Orbital implants, San Diego) is called a "porous implant." ...
Artificial articular joints: Partial and total joint replacement, spinal discs, explant analysis, implant corrosion and wear, ... Due to migration of article submission systems, please check the status of your submitted manuscript in the relevant system ... Ocular tribology: Ocular surfaces, contact lenses, tear lubrication and Dry Eye Syndrome. • Skin tribology: Damage mechanisms, ... Dental tribology: Tooth and implant wear, implant anchoring, tribo-corrosion of dental surfaces, fracture mechanism of teeth. ...
... intraocular lens (IOL) implants, glaucoma valves, cataract surgery, keratectomies, vitrectomy ,/li, ,li,LASIK ,ul, ,li,In depth ... Qualitative evaluation of the risk for implanted device migration in soft tissue,/li, ,/ul, ,br, ,p,,strong,Cardiovascular ... Artificial heart valves and devices-percutaneous (TAVI/TAVR) and surgically placed ,/li, ,li,Ventricular reconstruction ... Robust contact algorithms for implant and bone interactions ,/li, ,li,Customized implant geometries ,/li, ,li,Virtual ...
... to be implanted in combination with a posterior chamber intraocular lens (IOL) to inhibit cellular migration across the ... c) PDMSe patches were removed and cell migration into the artificial wound was monitored. ... Nagamoto T, Fujiwara T. Inhibition of lens epithelial cell migration at the intraocular lens optic edge: role of capsule ... residual lens epithelial cells (LECs) rapidly proliferate and migrate behind the newly implanted intraocular lens (IOL). As ...
Can artificial metalloenzymes become as catalytically efficient as naturally-evolved metalloenzymes, even in complex biological ... wireless-powered implants providing closed-loop bioelectronic control, which allow real-time monitoring of metabolic conditions ... migration) processes and generates configurations that compute functional phenotypes. In particular, I will combine experiments ... and Googles proposal to develop glucose-monitoring contact lenses has triggered a wave of interest in harnessing the full ...
Analysis of cell migration by inducing artificial wound in Hela cells. a, a: pictures of the wound in untreated and treated ... contact lenses, prosthetic implants [50]. ... Cell migration assay. The cell migration assay was performed ... Analysis of wound healing and cell migration. In order to study cell migration and proliferation of untreated and treated cells ... The evaluation of cell migration inhibition by ROEO showed that the oil could prevent the rapid cell migration. We can conclude ...
... artificial hip joints, bone cements, dental composite materials (white fillings) and even in breast implants. Many implantable ... Many high-quality flashlights use borosilicate glass for the lens. This increases light transmittance through the lens compared ... The chemical resistance of borosilicate glass minimizes the migration of sodium ions from the glass matrix, thus making it well ... Main use in lens and mirrors for laser, cameras and telescopes. Duran of DURAN Group, similar to Pyrex, Simax or Jenaer Glas. ...
... which are artificial members, possibly simulating different components of the eye, that are suited, depending on their ... In use, when an artificial capsular bag 24 is being implanted in the eye to replace the removed lens capsule 7 (see FIG. 2), ... Once in place, the patch seals the tear, prevents it from becoming enlarged, and inhibits any migration of vitreous humor into ... Method of implanting an intraocular lens. US8486086. Nov 7, 2011. Jul 16, 2013. Optonol, Ltd. Flow regulating implant, method ...
Cbs Lens,. Collagen hydrogel for promoting epithelial cell growth and artificial lens using the same. ... Drug releasing surgical implant or dressing material. US5733884. 7 Nov 1995. 31 Mar 1998. Nestec Ltd.. Enteral formulation ... The protein provides a matrix for cell growth and migration and for the deposition of wound-healing substances. Additionally, ... After drying, the lens was carefully removed from the mold. The resulting film was transparent and shaped like a contact lens. ...
  • The topic of research should include a biological surface as part of the interface (e.g. articular cartilage, skin or dental enamel) or have a direct impact on biological function (e.g. prosthetic joints, dental implants). (elsevier.com)
  • The duration of dental implant treatment is dictated by the healing period of the jaw bones after removal of teeth and insertion of the dental implants, as well as the complexity of the treatment. (couponit.de)
  • is a leading Dental Implant Company in the dental implants systems market. (couponit.de)
  • Commercially pure titanium (cp Ti) dental implants have been widely and successfully used with high rates of clinical success in normal situations. (ibecbarcelona.eu)
  • 3. The method of claim 2, wherein said biocompatible flexible membrane further comprises patterned surface elements coupled to at least one of said front surface and said back surface of said biocompatible flexible membrane, said patterned surface elements having dimensional relations adapted to inhibit migration of said target cells into said localized region of said eye. (patentsencyclopedia.com)
  • 8. The method of claim 7, wherein said annular member has sufficient height to engage haptics of said lens engaged with said front surface of said biocompatible flexible membrane, and further comprising engaging said haptics of said lens with said annular member. (patentsencyclopedia.com)
  • In particular, there is often a need to have one surface of an ophthalmic implant capable of promoting cell attachment while the other needs to be resistant to this effect. (springer.com)
  • In the present retrospective case series, management of dislocated IOLs with repositioning or exchange of the primary implant conferred comparable surgical and visual outcomes. (bvsalud.org)
  • More particularly, the present invention relates to accommodating IOLs designed for refractive correction in aphakic eyes where a diseased natural lens is surgically removed, such as in the case of cataracts. (google.com.au)
  • The PM prototypes were tested in an in vitro PCO model for reduction of cell migration behind an IOL versus unpatterned prototypes and IOLs with no PM. In both assays, cell migration was analyzed with fluorescent microscopy. (arvojournals.org)
  • Micropatterned PMs reduced LEC migration in a PCO model by 50%, P = 0.0005 (ANOVA, Tukey Test) compared with both IOLs with no PM and IOLs with SM PMs. (arvojournals.org)
  • The present studies were aimed to determine whether surface topography could be used to impede epithelial downgrowth on percutaneous implants based on those principles that have been found to control the direction and rate of cell migration in vitro. (ubc.ca)
  • Extensive cell migration into the implants was evident. (arvojournals.org)
  • Our data are contrary to that assumption and show for the first time by direct measurement that traction forces driving collective cell migration arise predominately many cell rows behind the leading front edge and extend across enormous distances. (ibecbarcelona.eu)
  • The physiological function of the vitreous body involves supporting adjacent posterior segment structures, serving as an ocular refractive medium and a cell barrier to inhibit cell migration from the retina to the vitreous cavity. (arvojournals.org)
  • whereby said one or more proteins, polypeptides, polyamino acids or polyamines adhere said implant to an interior posterior surface of an aphakic eye's lens capsule upon contact therewith. (google.co.uk)
  • To create the artificial eye, the team first needed to construct a hemispherical mold of the eye's outer layer, a structure consisting of thousands of microlenses. (bio-medicine.org)
  • The intraocular lens is designed with specific flexibility characteristics so as to exhibit greater than approximately 1.0 mm axial displacement of the optic portion along the eye's optical axis under a compression force suitable to effect a 1.0 mm in diameter compression of the intraocular lens. (google.com.au)
  • To evaluate complications after intravitreal injection (IVI) of dexamethasone implants (Ozurdex®, Allergan) and their successional therapeutical management. (euretina.org)
  • Retinal Implant AG, retrieved from https://www.youtube.com/watch?v=WSdmWbItsvU ). (utah.edu)
  • B. Suprachoroidal Australian retinal implant patient negotiating an obstacle avoidance course (Bionic Vision Australia, retrieved from https://www.youtube.com/watch?v=6EmleCs0KGY ). (utah.edu)
  • Optical coherence tomography revealed decreased retinal thickness and an altered retinal structure in the implanted eyes compared to the control eyes. (arvojournals.org)
  • 1 Pars plana vitrectomy, combined with artificial vitreous substitutes, is an important treatment for severe retinal detachment (RD) caused by various retinopathies, such as proliferative vitreoretinopathy, proliferative diabetic retinopathy, and endophthalmitis. (arvojournals.org)
  • 4. The method of claim 1, comprising injecting the cross-linked mixture directly into breast tissue or into a breast implant to augment the soft tissue. (patents.com)
  • Thus, following removal of the eye, an orbital implant is put into the socket and the tissues are closed over top of it. (ocularist.co.in)
  • c) Secondary Orbital Implant Surgery - In some individuals who previously had an enucleation procedure years ago, the orbital implant may have shifted out of position, become exposed, infected, or is simply too small. (ocularist.co.in)
  • In this situation a secondary surgery can be performed to remove the first implant (secondary orbital implant surgery). (ocularist.co.in)
  • Secondary orbital implant surgery can be more challenging than enucleation or evisceration especially if the surgeon tries to localize and reconnect the extraocular muscles. (ocularist.co.in)
  • Selective control of cellular response to polymeric biomaterials is an important consideration for many ocular implant applications. (springer.com)
  • Ocular biomaterials and implants. (springer.com)
  • Biomaterials, such as ceramics and metals, are already used as implants to replace or improve the functionality of the damaged tissue or organ. (intechopen.com)
  • These 'biomaterials' for the earliest medical devices were initially simple and were implanted without knowledge of whether they were even biocompatible. (medapparatus.com)
  • The materials used for external prostheses, such as artificial limbs and hearing aids, are also not considered biomaterials most of the time. (medapparatus.com)
  • However, at 7.0 Tesla, several orthopaedic implants would show significant interaction with the MRI magnetic fields, such as heel and fibular implant. (wikipedia.org)
  • Some implants are bioactive , such as subcutaneous drug delivery devices in the form of implantable pills or drug-eluting stents . (wikipedia.org)
  • Examples include the artificial heart , artificial heart valve , implantable cardioverter-defibrillator , cardiac pacemaker , and coronary stent . (wikipedia.org)
  • 1 . A method of processing for intraocular implants and medical devices using hydrophobic core copolymers with a surface coating of biocompatible hydrophilic polymer. (google.co.uk)
  • Two different biomimetic strategies have been successfully developed combining topographical modification, inorganic treatments and/or biofunctionalization for improving bioactive integrative properties of cp Ti implants. (ibecbarcelona.eu)
  • This can cause the embryo not to reach the uterus in time to implant successfully. (ewtn.com)
  • However, hormones from the Pill can cause the corpus luteum to function inadequately, allowing the lining of the uterus to be shed before the embryo can successfully implant. (ewtn.com)
  • The biosynthetic stromal substitutes implants remained stably integrated into the host corneas over the 4-year follow-up period, without signs of wound dehiscence or implant extrusion. (diva-portal.org)
  • 2 - 6 A number of artificial vitreous substitutes (e.g., inert gas, silicone oil [SO], heavy SO, and hydrogels) have been adopted. (arvojournals.org)
  • In this study, an atmospheric pressure dielectric barrier discharge (DBD) has been used to modify the surface region of poly(methyl methacrylate) (PMMA), a well established ocular biomaterial, with the aim of promoting a controlled response to human lens epithelial cells (LEC) cultured thereon. (springer.com)
  • Different biomaterial types, lens implant designs, drugs, and other methods have been researched to improve the incidence of lens capsule scarring. (akcchf.org)
  • Complications related to the injection procedure of Ozurdex® were particularly misplacements of the implant. (euretina.org)
  • Uncontrolled treatment with the Ozurdex® implant can cause complications with severe sequelae for the patient. (euretina.org)
  • The degree of LEC proliferation and migration (capsule scarring) was compared at different time points of cell culture. (akcchf.org)
  • The results show that lens capsules containing both CTR and IOL showed a lesser degree of LEC proliferation and migration in a laboratory setting. (akcchf.org)
  • As one of the chief components of the extracellular matrix , hyaluronan contributes significantly to cell proliferation and migration, and may also be involved in the progression of some malignant tumors . (wikipedia.org)
  • Lithium stabilizes the polarized lens epithelial phenotype and inhibits proliferation, migration, and epithelial mesenchymal transition. (semanticscholar.org)
  • article{Stump2006LithiumST, title={Lithium stabilizes the polarized lens epithelial phenotype and inhibits proliferation, migration, and epithelial mesenchymal transition. (semanticscholar.org)
  • Alofanib dose dependently inhibited the proliferation and migration of human and mouse endothelial cells (GI50 11-58 nmol/L) compared with brivanib and bevacizumab. (medgadget.com)
  • A method for stabilizing a cervical spine segment includes implanting a respective uncinate joint stabilizer into each uncinate joint of the cervical spine. (patents.com)
  • Here we report that lithium chloride (LiCl) is a potent stabilizer of the lens epithelial phenotype. (semanticscholar.org)
  • Broekhuijse ML, Soštarić E, Feitsma H, Gadella BM (2012) The value of microscopic semen motility assessment at collection for a commercial artificial insemination center, a retrospective study on factors explaining variation in pig fertility. (springer.com)
  • There are many different types of implants, classification ranging from shape (Spherical vs egg (oval) shaped), stock vs custom, porous vs nonporous, specific chemical make-up, and the presence of a peg or motility post. (wikipedia.org)
  • Suprachoroidal drainage of aqueous humour with a novel implant: Suprajet. (deu.edu.tr)
  • 4 Sporadic attempts using implants to shunt aqueous to a variety of unconventional sites, including the vortex veins 5 and the nasolacrimal duct, 6 have since been reported. (bmj.com)
  • It's a procedure that involves the use of implants to restore breast volume that has been lost as a result of factors such as natural aging , pregnancy or a weight-loss. (thefreedictionary.com)
  • These eyes can eventually be used as cameras or sensory detectors to capture visual or chemical information from a wider field of vision than previously possible, even with the best fish-eye lens, said Luke P. Lee, the team's principal investigator. (bio-medicine.org)
  • Sensory and neurological implants are used for disorders affecting the major senses and the brain, as well as other neurological disorders. (wikipedia.org)
  • In vertebrates, placodes are transient epithelial thickenings within non-neural ectoderm that give rise to sensory neurons of the cranial ganglia as well as the lens and sensory structures of the nose and ear. (biologists.org)
  • andc) observing a reduction in viability or growth when said test agent, is contacted with said lens epithelial cells in proximity to the lens capsule. (patentsencyclopedia.com)
  • Along with the great attention that has been given to stem cell therapy, stem cell theranostics, which tracks and monitors the delivered cells in a noninvasive manner by using imaging agents and imaging modalities, is a promising technique for improving the understanding of the implanted cells' dynamics, including their viability, differentiation, migration, and engraftment in vivo [ 3 , 4 ]. (thno.org)
  • 6 The peri-implant sulcus shares the structural, ultrastructural, and functional characteristics with the gingival tissues. (couponit.de)
  • Structural similarity of bovine lung prostaglandin F synthase to lens epsilon- crystallin of the European common frog. (forexforumxl.com)
  • The present disclosure relates to an implant for insertion into an intervertebral space between a first vertebral member and a second vertebral member. (patents.com)
  • A spacer member is provided that is configured to be implanted adjacent an anatomical structure. (patents.com)
  • The surface treated intraocular lens includes one or more proteins, polypeptides, polyamino acids or polyamines bound to the surface of the intraocular lens. (google.co.uk)
  • One solution to this problem would be to have a surface of an implant that has the ability to impede the apical migration of epithelium. (ubc.ca)
  • In the shallower horizontal grooves [≤10 μm-deep] epithelial downgrowth was probably inhibited by contact guidance because there was no evidence of fibroblasts (F) inserting into the implant surface. (ubc.ca)
  • However, in the 19 μm-deep grooved surfaces, E cells bridged over the grooves and their migration appeared to be inhibited by the F that inserted into the implant surface. (ubc.ca)
  • The extraocular muscles can be hooked up to the implant surface to help keep the implant from migrating and to help with socket movement. (ocularist.co.in)
  • Micropatterns that protruded from the surface reduced migration more than recessed features. (arvojournals.org)
  • The surface of the artificial eye is covered with a thin layer of gold, engraved with a central circle (representing the iris) and gold lines patterned like sun rays. (wikipedia.org)
  • Our group has aimed the development of biomimetic strategies of surface modification to obtain metallic implants with osteostimulative capabilities. (ibecbarcelona.eu)
  • These surface modifications will provide implants with a rapid rate of newly-formed bone growth and with ossecoalescence, i.e., direct chemical contact with the surrounding tissues. (ibecbarcelona.eu)
  • Consequently, the biomimetically-modified implants will be reliably used on those more demanding clinical situations, cp Ti surfaces treated to obtain a combination of an optimal random surface topography (in the micro and nanolevels) with a chemical modification of the naturally-formed titania layer have been proved bioactive. (ibecbarcelona.eu)
  • The surface of implants that contact the body might be made of a biomedical material such as titanium , silicone , or apatite depending on what is the most functional. (wikipedia.org)
  • Exponent has developed FE models of various cardiovascular implants for evaluating design, manufacturing, and delivery procedures, along with clinical performance. (exponent.com)
  • Cardiovascular medical devices are implanted in cases where the heart, its valves , and the rest of the circulatory system is in disorder. (wikipedia.org)
  • A coronary stent - in this case a drug-eluting stent - is another common item implanted in humans. (wikipedia.org)
  • In the third series of experiments, the ultrastructural observations indicated that E cells closely attached to the smooth, and interdigitated with, the 3 μm and 10 μm grooved surfaces of titanium-coated implants. (ubc.ca)
  • This methodology can be used to develop biofunc- tionalized implant surfaces with different or combined bioactivities. (ibecbarcelona.eu)
  • An implant is a medical device manufactured to replace a missing biological structure, support a damaged biological structure, or enhance an existing biological structure. (wikipedia.org)