Contact Lenses: Lenses designed to be worn on the front surface of the eyeball. (UMDNS, 1999)Contact Lenses, Hydrophilic: Soft, supple contact lenses made of plastic polymers which interact readily with water molecules. Many types are available, including continuous and extended-wear versions, which are gas-permeable and easily sterilized.Contact Lens Solutions: Sterile solutions used to clean and disinfect contact lenses.Keratitis: Inflammation of the cornea.Silicones: A broad family of synthetic organosiloxane polymers containing a repeating silicon-oxygen backbone with organic side groups attached via carbon-silicon bonds. Depending on their structure, they are classified as liquids, gels, and elastomers. (From Merck Index, 12th ed)Acanthamoeba Keratitis: Infection of the cornea by an ameboid protozoan which may cause corneal ulceration leading to blindness.Lenses: Pieces of glass or other transparent materials used for magnification or increased visual acuity.Acanthamoeba: A genus of free-living soil amoebae that produces no flagellate stage. Its organisms are pathogens for several infections in humans and have been found in the eye, bone, brain, and respiratory tract.Cornea: The transparent anterior portion of the fibrous coat of the eye consisting of five layers: stratified squamous CORNEAL EPITHELIUM; BOWMAN MEMBRANE; CORNEAL STROMA; DESCEMET MEMBRANE; and mesenchymal CORNEAL ENDOTHELIUM. It serves as the first refracting medium of the eye. It is structurally continuous with the SCLERA, avascular, receiving its nourishment by permeation through spaces between the lamellae, and is innervated by the ophthalmic division of the TRIGEMINAL NERVE via the ciliary nerves and those of the surrounding conjunctiva which together form plexuses. (Cline et al., Dictionary of Visual Science, 4th ed)Tears: The fluid secreted by the lacrimal glands. This fluid moistens the CONJUNCTIVA and CORNEA.Corneal Ulcer: Loss of epithelial tissue from the surface of the cornea due to progressive erosion and necrosis of the tissue; usually caused by bacterial, fungal, or viral infection.Prosthesis Fitting: The fitting and adjusting of artificial parts of the body. (From Stedman's, 26th ed)Disposable Equipment: Apparatus, devices, or supplies intended for one-time or temporary use.Keratoconus: A noninflammatory, usually bilateral protrusion of the cornea, the apex being displaced downward and nasally. It occurs most commonly in females at about puberty. The cause is unknown but hereditary factors may play a role. The -conus refers to the cone shape of the corneal protrusion. (From Dorland, 27th ed)Lenses, Intraocular: Artificial implanted lenses.Aphakia: Absence of crystalline lens totally or partially from field of vision, from any cause except after cataract extraction. Aphakia is mainly congenital or as result of LENS DISLOCATION AND SUBLUXATION.Corneal Edema: An excessive amount of fluid in the cornea due to damage of the epithelium or endothelium causing decreased visual acuity.Corneal Topography: The measurement of curvature and shape of the anterior surface of the cornea using techniques such as keratometry, keratoscopy, photokeratoscopy, profile photography, computer-assisted image processing and videokeratography. This measurement is often applied in the fitting of contact lenses and in diagnosing corneal diseases or corneal changes including keratoconus, which occur after keratotomy and keratoplasty.Eye Infections, Bacterial: Infections in the inner or external eye caused by microorganisms belonging to several families of bacteria. Some of the more common genera found are Haemophilus, Neisseria, Staphylococcus, Streptococcus, and Chlamydia.Corneal Diseases: Diseases of the cornea.Hydrogel: A network of cross-linked hydrophilic macromolecules used in biomedical applications.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)Contact Lenses, Extended-Wear: Hydrophilic contact lenses worn for an extended period or permanently.Lens Cortex, Crystalline: The portion of the crystalline lens surrounding the nucleus and bound anteriorly by the epithelium and posteriorly by the capsule. It contains lens fibers and amorphous, intercellular substance.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.Eyeglasses: A pair of ophthalmic lenses in a frame or mounting which is supported by the nose and ears. The purpose is to aid or improve vision. It does not include goggles or nonprescription sun glasses for which EYE PROTECTIVE DEVICES is available.Lens Nucleus, Crystalline: The core of the crystalline lens, surrounded by the cortex.Refraction, Ocular: Refraction of LIGHT effected by the media of the EYE.Lens DiseasesDisinfection: Rendering pathogens harmless through the use of heat, antiseptics, antibacterial agents, etc.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.Hydrogels: Water swollen, rigid, 3-dimensional network of cross-linked, hydrophilic macromolecules, 20-95% water. They are used in paints, printing inks, foodstuffs, pharmaceuticals, and cosmetics. (Grant & Hackh's Chemical Dictionary, 5th ed)Fusariosis: OPPORTUNISTIC INFECTIONS with the soil fungus FUSARIUM. Typically the infection is limited to the nail plate (ONYCHOMYCOSIS). The infection can however become systemic especially in an IMMUNOCOMPROMISED HOST (e.g., NEUTROPENIA) and results in cutaneous and subcutaneous lesions, fever, KERATITIS, and pulmonary infections.Myopia: A refractive error in which rays of light entering the EYE parallel to the optic axis are brought to a focus in front of the RETINA when accommodation (ACCOMMODATION, OCULAR) is relaxed. This results from an overly curved CORNEA or from the eyeball being too long from front to back. It is also called nearsightedness.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.Equipment Contamination: The presence of an infectious agent on instruments, prostheses, or other inanimate articles.Presbyopia: The normal decreasing elasticity of the crystalline lens that leads to loss of accommodation.Fluorophotometry: Measurement of light given off by fluorescein in order to assess the integrity of various ocular barriers. The method is used to investigate the blood-aqueous barrier, blood-retinal barrier, aqueous flow measurements, corneal endothelial permeability, and tear flow dynamics.Polyhydroxyethyl Methacrylate: A biocompatible, hydrophilic, inert gel that is permeable to tissue fluids. It is used as an embedding medium for microscopy, as a coating for implants and prostheses, for contact lenses, as microspheres in adsorption research, etc.Astigmatism: Unequal curvature of the refractive surfaces of the eye. Thus a point source of light cannot be brought to a point focus on the retina but is spread over a more or less diffuse area. This results from the radius of curvature in one plane being longer or shorter than the radius at right angles to it. (Dorland, 27th ed)Eye Infections, Fungal: Infection by a variety of fungi, usually through four possible mechanisms: superficial infection producing conjunctivitis, keratitis, or lacrimal obstruction; extension of infection from neighboring structures - skin, paranasal sinuses, nasopharynx; direct introduction during surgery or accidental penetrating trauma; or via the blood or lymphatic routes in patients with underlying mycoses.Crystallins: A heterogeneous family of water-soluble structural proteins found in cells of the vertebrate lens. The presence of these proteins accounts for the transparency of the lens. The family is composed of four major groups, alpha, beta, gamma, and delta, and several minor groups, which are classed on the basis of size, charge, immunological properties, and vertebrate source. Alpha, beta, and delta crystallins occur in avian and reptilian lenses, while alpha, beta, and gamma crystallins occur in all other lenses.Methylmethacrylates: The methyl esters of methacrylic acid that polymerize easily and are used as tissue cements, dental materials, and absorbent for biological substances.Epithelium, Corneal: Stratified squamous epithelium that covers the outer surface of the CORNEA. It is smooth and contains many free nerve endings.Eyelids: Each of the upper and lower folds of SKIN which cover the EYE when closed.Lens Subluxation: Incomplete rupture of the zonule with the displaced lens remaining behind the pupil. In dislocation, or complete rupture, the lens is displaced forward into the anterior chamber or backward into the vitreous body. When congenital, this condition is known as ECTOPIA LENTIS.Refractive Errors: Deviations from the average or standard indices of refraction of the eye through its dioptric or refractive apparatus.Disinfectants: Substances used on inanimate objects that destroy harmful microorganisms or inhibit their activity. Disinfectants are classed as complete, destroying SPORES as well as vegetative forms of microorganisms, or incomplete, destroying only vegetative forms of the organisms. They are distinguished from ANTISEPTICS, which are local anti-infective agents used on humans and other animals. (From Hawley's Condensed Chemical Dictionary, 11th ed)Eye Infections: Infection, moderate to severe, caused by bacteria, fungi, or viruses, which occurs either on the external surface of the eye or intraocularly with probable inflammation, visual impairment, or blindness.Corneal Stroma: The lamellated connective tissue constituting the thickest layer of the cornea between the Bowman and Descemet membranes.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.Orthokeratologic Procedures: An alternative to REFRACTIVE SURGICAL PROCEDURES. A therapeutic procedure for correcting REFRACTIVE ERRORS. It involves wearing CONTACT LENSES designed to force corrective changes to the curvature of the CORNEA that remain after the lenses are removed. The effect is temporary but is maintained by wearing the therapeutic lenses daily, usually during sleep.Hygiene: The science dealing with the establishment and maintenance of health in the individual and the group. It includes the conditions and practices conducive to health. (Webster, 3d ed)Silicone Elastomers: Polymers of silicone that are formed by crosslinking and treatment with amorphous silica to increase strength. They have properties similar to vulcanized natural rubber, in that they stretch under tension, retract rapidly, and fully recover to their original dimensions upon release. They are used in the encapsulation of surgical membranes and implants.Ophthalmic Solutions: Sterile solutions that are intended for instillation into the eye. It does not include solutions for cleaning eyeglasses or CONTACT LENS SOLUTIONS.Dry Eye Syndromes: Corneal and conjunctival dryness due to deficient tear production, predominantly in menopausal and post-menopausal women. Filamentary keratitis or erosion of the conjunctival and corneal epithelium may be caused by these disorders. Sensation of the presence of a foreign body in the eye and burning of the eyes may occur.Eye Diseases: Diseases affecting the eye.Hyperopia: A refractive error in which rays of light entering the eye parallel to the optic axis are brought to a focus behind the retina, as a result of the eyeball being too short from front to back. It is also called farsightedness because the near point is more distant than it is in emmetropia with an equal amplitude of accommodation. (Dorland, 27th ed)Endothelium, Corneal: Single layer of large flattened cells covering the surface of the cornea.Contact Tracing: Identification of those persons (or animals) who have had such an association with an infected person, animal, or contaminated environment as to have had the opportunity to acquire the infection. Contact tracing is a generally accepted method for the control of sexually transmitted diseases.Interferometry: Measurement of distances or movements by means of the phenomena caused by the interference of two rays of light (optical interferometry) or of sound (acoustic interferometry).Conjunctiva: The mucous membrane that covers the posterior surface of the eyelids and the anterior pericorneal surface of the eyeball.Cataract Extraction: The removal of a cataractous CRYSTALLINE LENS from the eye.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)Eye ProteinsCorneal Transplantation: Partial or total replacement of the CORNEA from one human or animal to another.Amebiasis: Infection with any of various amebae. It is an asymptomatic carrier state in most individuals, but diseases ranging from chronic, mild diarrhea to fulminant dysentery may occur.Dermatitis, Contact: A type of acute or chronic skin reaction in which sensitivity is manifested by reactivity to materials or substances coming in contact with the skin. It may involve allergic or non-allergic mechanisms.Ophthalmodynamometry: Measurement of the blood pressure of the retinal vessels. It is used also for the determination of the near point of convergence (CONVERGENCE, OCULAR). (From Cline, et al., Dictionary of Visual Science, 4th ed)Equipment Design: Methods of creating machines and devices.BiguanidesSerratia Infections: Infections with bacteria of the genus SERRATIA.Optics and Photonics: A specialized field of physics and engineering involved in studying the behavior and properties of light and the technology of analyzing, generating, transmitting, and manipulating ELECTROMAGNETIC RADIATION in the visible, infrared, and ultraviolet range.Pseudophakia: Presence of an intraocular lens after cataract extraction.Keratoplasty, Penetrating: Partial or total replacement of all layers of a central portion of the cornea.Dermatitis, Allergic Contact: A contact dermatitis due to allergic sensitization to various substances. These substances subsequently produce inflammatory reactions in the skin of those who have acquired hypersensitivity to them as a result of prior exposure.Ophthalmology: A surgical specialty concerned with the structure and function of the eye and the medical and surgical treatment of its defects and diseases.Radiation ProtectionMethacrylates: Acrylic acids or acrylates which are substituted in the C-2 position with a methyl group.Lasers, Excimer: Gas lasers with excited dimers (i.e., excimers) as the active medium. The most commonly used are rare gas monohalides (e.g., argon fluoride, xenon chloride). Their principal emission wavelengths are in the ultraviolet range and depend on the monohalide used (e.g., 193 nm for ArF, 308 nm for Xe Cl). These lasers are operated in pulsed and Q-switched modes and used in photoablative decomposition involving actual removal of tissue. (UMDNS, 2005)Pseudomonas aeruginosa: A species of gram-negative, aerobic, rod-shaped bacteria commonly isolated from clinical specimens (wound, burn, and urinary tract infections). It is also found widely distributed in soil and water. P. aeruginosa is a major agent of nosocomial infection.ConjunctivitisAcanthamoeba castellanii: A species of free-living soil amoebae in the family Acanthamoebidae. It can cause ENCEPHALITIS and KERATITIS in humans.Amebicides: Agents which are destructive to amebae, especially the parasitic species causing AMEBIASIS in man and animal.Fluorescein: A phthalic indicator dye that appears yellow-green in normal tear film and bright green in a more alkaline medium such as the aqueous humor.Fusarium: A mitosporic Hypocreales fungal genus, various species of which are important parasitic pathogens of plants and a variety of vertebrates. Teleomorphs include GIBBERELLA.Meibomian Glands: The sebaceous glands situated on the inner surface of the eyelids between the tarsal plates and CONJUNCTIVA.Eye Injuries: Damage or trauma inflicted to the eye by external means. The concept includes both surface injuries and intraocular injuries.Time Factors: Elements of limited time intervals, contributing to particular results or situations.Pseudomonas Infections: Infections with bacteria of the genus PSEUDOMONAS.Corneal Endothelial Cell Loss: Loss of CORNEAL ENDOTHELIUM usually following intraocular surgery (e.g., cataract surgery) or due to FUCHS' ENDOTHELIAL DYSTROPHY; ANGLE-CLOSURE GLAUCOMA; IRITIS; or aging.Diagnostic Techniques, Ophthalmological: Methods and procedures for the diagnosis of diseases of the eye or of vision disorders.Blinking: Brief closing of the eyelids by involuntary normal periodic closing, as a protective measure, or by voluntary action.Conjunctival DiseasesFungi: A kingdom of eukaryotic, heterotrophic organisms that live parasitically as saprobes, including MUSHROOMS; YEASTS; smuts, molds, etc. They reproduce either sexually or asexually, and have life cycles that range from simple to complex. Filamentous fungi, commonly known as molds, refer to those that grow as multicellular colonies.Epithelium: One or more layers of EPITHELIAL CELLS, supported by the basal lamina, which covers the inner or outer surfaces of the body.Epithelial Cells: Cells that line the inner and outer surfaces of the body by forming cellular layers (EPITHELIUM) or masses. Epithelial cells lining the SKIN; the MOUTH; the NOSE; and the ANAL CANAL derive from ectoderm; those lining the RESPIRATORY SYSTEM and the DIGESTIVE SYSTEM derive from endoderm; others (CARDIOVASCULAR SYSTEM and LYMPHATIC SYSTEM) derive from mesoderm. Epithelial cells can be classified mainly by cell shape and function into squamous, glandular and transitional epithelial cells.Colony Count, Microbial: Enumeration by direct count of viable, isolated bacterial, archaeal, or fungal CELLS or SPORES capable of growth on solid CULTURE MEDIA. The method is used routinely by environmental microbiologists for quantifying organisms in AIR; FOOD; and WATER; by clinicians for measuring patients' microbial load; and in antimicrobial drug testing.

Lysozyme sorption in hydrogel contact lenses. (1/217)

PURPOSE: To examine the processes involved in formation of protein deposits on hydrogel contact lenses. METHODS: The adsorption and/or penetration of lysozyme on or into three types of contact lenses, etafilcon A, vifilcon A, and tefilcon, were investigated in vitro using a radiolabel-tracer technique, x-ray photoelectron spectroscopy, and laser scanning confocal microscopy. RESULTS: Binding of lysozyme to high-water-content, ionic contact lenses (etafilcon A and vifilcon A) was dominated by a penetration process. The extent of this penetration was a function of charge density of the lenses, so that there was a higher degree of penetration of lysozyme in etafilcon A than in vifilcon A lenses. In contrast, the binding of lysozyme to tefilcon lenses was a surface adsorption process. The adsorption and desorption kinetics showed similar trends to those found in human serum albumin (HSA) adsorption on lens surfaces. However, the extent of lysozyme adsorption on tefilcon is much higher than HSA adsorption, probably because of the self-association of lysozyme on the tefilcon lens surface. Furthermore, either penetration or adsorption of lysozyme involved reversible and irreversible processes and were both time dependent. CONCLUSIONS: Binding of lysozyme to hydrogel lenses involves surface adsorption or matrix penetration. These processes may be reversible or irreversible. The properties of the lens materials, such as charge density (ionicity) and porosity (water content) of the lenses, determine the type and rates of these processes.  (+info)

Measurement of post-lens tear thickness. (2/217)

PURPOSE: A method to measure the tear film beneath a soft contact lens, referred to as post-lens tear thickness (PLTT), would have many applications to contact lens research. In this study a noninvasive technique for measuring the PLTT is presented. METHODS: The feasibility of measuring the tear layer by optical pachometry was first assessed using a model eye. The baseline corneal thickness (B) of both eyes of 21 subjects was measured, etafilcon-A ionic disposable soft contact lenses (58% water) were inserted, and the total thickness (T) of the cornea, contact lens, and PLTT were measured. After the pachometry readings the lenses were removed and their center thickness (C) determined. The PLTT was calculated using the equation: PLTT = T-(B+C). Two sets of measurements of T were performed at 15 and 25 minutes after lens insertion. The entire procedure was repeated at a second visit. RESULTS: The pachometry measurements of the small aqueous reservoir between the model eye and the lens closely matched those obtained by direct microscopic measurement. For human PLTT, the mean values (and 95% confidence intervals) for right eyes on visits 1 and 2 were 11 (8, 13) and 12 (10, 15) microm, respectively, and for left eyes were 12 (10, 15) and 11 microm (8, 14) microm, respectively. CONCLUSIONS: It is possible to measure the post-lens tear thickness using optical pachometry. The variability between repeated measurements suggests that with careful sample size planning, the technique is sufficiently precise to be useful in group assessments of PLTT.  (+info)

Sympathetic swelling response of the control eye to soft lenses in the other eye. (3/217)

PURPOSE: To compare central corneal swelling and light scatter after 8 hours of sleep in eyes wearing high- and low-Dk hydrogel lenses and to the contralateral control eyes. METHODS: Twenty neophyte subjects wore a Lotrafilcon A (Dk, 140; Ciba Vision, Duluth GA) silicone hydrogel lens and an Etafilcon A (Dk, 18; Acuvue; Vistakon, Jacksonville, FL) 58% water content hydrogel lens of similar center thickness in random order in the right eye only, for overnight 8-hour periods. The contralateral nonwearing left eyes served as controls. Central corneal thickness was measured using an optical pachometer and light scatter using a Van den Berg stray-light meter before lens insertion, after lens removal on waking, and every 20 minutes for the next 3 hours. RESULTS: Central corneal swelling induced by the Etafilcon A lens on eye opening was significantly higher than with the Lotrafilcon A lens (8.66%+/-2.84% versus 2.71%+/-1.91%; P<0.00001). Light scatter induced by the Etafilcon A lens on eye opening was significantly higher than with the Lotrafilcon A lens (46.09+/-5.62 versus 42.78+/-6.07 Van den Berg units, P = 0.0078). The swelling of the control eyes paired with the Etafilcon A lens-wearing eyes was also slightly but significantly higher than that of the control eyes paired with the Lotrafilcon A lens-wearing eyes (2.34%+/-1.26% versus 1.44%+/-0.91%; P = 0.0002). Light-scatter measurements were not significantly different between control sets of eyes but showed the same trend. CONCLUSIONS: In neophyte subjects, corneal swelling of the contralateral control eyes appears to be influenced by the swelling of the fellow lens-wearing eyes-that is, the swelling of the contralateral control eye was significantly lower when there was less swelling of the fellow eye wearing the high-Dk lens. Although there was no statistically significant difference in light-scatter measurements between the control sets of eyes, a trend similar to the corneal swelling results was observed, which could be used to support the suggestion that this may be a sympathetic physiological response rather than an unusual sampling coincidence.  (+info)

Observation of soft contact lens disinfection with fluorescent metabolic stains. (4/217)

A rapid fluorescent staining method using a tetrazolium dye and propidium iodide for the in-use assessment of disinfection of Pseudomonas aeruginosa biofilms on soft contact lenses showed that 11 to 13% of cells on lenses remained actively respiring and recoverable by culture methods after 30 min of exposure to 3% hydrogen peroxide.  (+info)

Unusual case of Acanthamoeba polyphaga and Pseudomonas aeruginosa keratitis in a contact lens wearer from Gauteng, South Africa. (5/217)

Acanthamoeba species can cause a chronic, progressive ulcerative keratitis of the eye which is not responsive to the usual antimicrobial therapy and is frequently mistaken for stromal herpes keratitis. An unusual case of coinfection with Acanthamoeba polyphaga and Pseudomonas aeruginosa as causes of corneal keratitis in a contact lens wearer from Gauteng, South Africa, is reported. These two pathogens have previously been assumed to be selectively exclusive. Cysts of the isolated acanthameba tolerated an incubation temperature of 40 degrees C, indicating a pathogenic species. This case highlights the importance of culture methods in the diagnosis of corneal infection and the choice of treatment regimen. The patient's history of careless contact lens-disinfecting habits emphasizes the need to adhere strictly to recommended methods of contact lens care.  (+info)

Apoptosis in shed human corneal cells. (6/217)

PURPOSE: To determine whether shear forces applied to the corneal epithelium by the repeated insertion and removal of a hydrogel contact lens alter the size and number of cells removed and to determine the contribution of apoptosis to this process. METHODS; Human corneal cells were collected from eight healthy subjects by sequential contact lens cytology (20 lens insertions and removals). Collected cells were stained with acridine orange for counting and measurement of cell size. In a separate experiment, collected cells were fixed and stained with TdT-mediated dUTP nick-end labeling (TUNEL) or labeled immediately after collection using annexin V. Hoechst stain and propidium iodide (PI) were used as nuclear counterstains. The proportion of cells labeled with acridine orange, TUNEL, and annexin V was quantified by fluorescence microscopy. RESULTS; The number of cells increased in later collections, and cells were smaller. The mean number of positively stained cells using TUNEL was 57%. Annexin V labeling on unfixed fresh samples showed a mean of 64%, with an increase in later collections. Apoptotic bodies were observed in very few cells. In most cells the nucleus and cytoplasmic membrane were intact. Structures were observed in which nuclei were missing (Hoechst negative) but in which cytoplasm had the size and appearance of whole, nucleated cells. These structures (cell ghosts) increased in number along with the increase in nucleated cells in later collections. CONCLUSIONS: The sequential removal of a soft contact lens caused a progressive increase in the number of cells collected from the surface and a progressive decrease in their size. The majority of nucleated cells removed by a contact lens were apoptotic in the sense of being positively labeled by TUNEL and annexin V. Morphologically they differed from classically apoptotic cells, in that cells showed an intact nuclear structure and no discernible apoptotic bodies. They could represent a last stage in a pathway of cell differentiation in which frictional forces induced by the removal of the contact lens activate the apoptotic program and cause the cell to be shed. There is also a pathway in which cells lose their nuclei before leaving the epithelial surface.  (+info)

Optical and visual impact of tear break-up in human eyes. (7/217)

PURPOSE: The purpose of this study was to examine the optical and visual impact of tear break-up. METHODS: Optical quality of the eye was assessed during periods of nonblinking by quantifying vessel contrast in the fundus image and by monitoring the psychophysical contrast sensitivity and the spatial distribution of tear thickness changes by retroillumination. All measures were obtained from three eyes either with or without a soft contact lens. RESULTS: A noticeable decrease in retinal vessel contrast and contrast sensitivity were observed soon after a blink. Both of these measures of optical quality of the eye showed a similar pattern of image degradation both with and without a soft contact lens. Although trial-to-trial variability was considerable, sample means show that image contrast in the low spatial frequency range can drop to between 20% and 40% of initial values after 60 seconds of nonblinking. Retroillumination of the tear film showed local intensity fluctuations that progressively spread across the pupil with increasing time after the blink. CONCLUSIONS: Optical aberrations created by tear break-up contribute to the decline in image quality observed objectively and psychophysically. The decline in image quality that accompanies tear break-up may be a direct cause of the blurry vision complaints commonly encountered in dry-eye patients.  (+info)

Bacterial colonization of disposable soft contact lenses is greater during corneal infiltrative events than during asymptomatic extended lens wear. (8/217)

Microorganisms, especially gram-negative bacteria, are considered to play a role in the etiology of certain corneal infiltrative events (CIEs) observed during soft contact lens wear. This study explored the possibility of microbial colonization of soft contact lenses as a risk factor leading to CIEs. In a clinical trial conducted from March 1993 to January 1996, 330 subjects wore disposable soft contact lenses on a 6-night extended-wear and disposal schedule. During this period, 4,321 lenses (118 during CIEs; 4,203 during asymptomatic lens wear) were recovered aseptically and analyzed for microbial colonization. A greater percentage of lenses were free from microbial colonization during asymptomatic wear than during CIEs (42 versus 23%; P < 0.0001). The incidence of gram-positive bacteria, gram-negative bacteria and fungi was greater during CIEs than during asymptomatic lens wear (P < 0.05). During asymptomatic lens wear, gram-positive bacteria were isolated most frequently and were usually normal external ocular microbiota. Of the gram-positive bacteria, the incidence of Streptococcus pneumoniae was greater during CIE than during asymptomatic wear (7.6 versus 0.6%; P < 0. 0001). While gram-negative bacteria were seen in few cases during asymptomatic wear, their incidence during CIE in comparison to asymptomatic wear was substantial and significant (23.7 versus 3.8%; P < 0.0001). Also, the level of colonization was high. Of CIEs, events of microbial keratitis, contact lens acute red eye, and asymptomatic infiltrative keratitis were associated with lens colonization with gram-negative bacteria or S. pneumoniae. Colonization of soft contact lenses with pathogenic bacteria, especially gram-negative bacteria and S. pneumoniae, appears to be a significant risk factor leading to CIE.  (+info)

Disinfecting solutions for use with hydrophilic soft contact lenses, containing effective amounts of C5 -C12 fatty acids, especially octanoic acid, are disclosed. These solutions provide broad spectrum antimicrobial efficacy together with rapid and complete desorption of the fatty acid antimicrobial from the contact lens material, resulting in a minimization of irritation and sensitization risks to the user. The method of disinfecting hydrophilic soft contact lenses using C5 -C12 fatty acids is also disclosed.
When to Vitamins and supplements may be able to help give you back some of your sparkle by making sure your body Some researchers have found that it is not as effective as vitamin D3 Sleep disorders may have reached epidemic proportions because of a common vitamin D deficiency. The Role of Thiamine Deficiency in Alcoholic Brain Disease Peter vitamin B 1 is an essential with WKS reverses many of the acute symptoms of the disease Because vitamin A and carotenoids play such a big role in cell and tissue growth The Skin Benefits of Vitamin C. High Myopia Soft Contact Lenses Colitis Floaters Eye Ulcerative dry eye is a This abnormal High Myopia Soft Contact Lenses High Myopia Soft Contact Lenses Colitis Floaters Eye Ulcerative Colitis Floaters Eye Ulcerative curvature of the cornea can cause double or blurred vision and most often affects children and young adults under 30 Information on edema and water retention swelling associated with the accumulation of fluid in spaces between the soft tissues of ...
Currently wearing weekly/biweekly or monthly sphere or toric soft contact lenses (NOT including AIR OPTIX Aqua, AIR OPTIX NIGHT & DAY Aqua, AIR OPTIX for Astigmatism, Biofinity Sphere, Biofinity Toric, or ProClear Toric soft contact lenses) bilaterrally (in both eyes) and have worn these lenses for at least 3 months, daily wear use only (no extended wear ...
Select from a list of soft contact lens multi-purpose solutions that conditions, cleans, removes protein, disinfects, rinses and stores soft contact lenses including silicone hydrogel lenses from Bausch + Lomb.
United States Patent 3,813,447 HYDROPHILIC SYNTHETIC HIGH POLYMERS FOR SOFT CONTACT LENSES AND A PROCESS FOR MANUFACTURING THE SAME Kyoichi Tanaka, Takeshi Mio, and Toyoyasu Tanaka, Nagoya, Japan, assignoi-Is to Toyo Contact Lens Coman Limited, Nagoya, apan No Drawing. Filed Sept. 15, 1971, Ser. No. 180,849 Claims priority, application Japan, Sept. 19, 1970, 45/82,164 Int. Cl. C08f 15/40 US. Cl. 260-63 UY 6 Claims ABSTRACT OF THE DISCLOSURE A hydrophilic synthetic high polymer having an excellent workability and especially sutiable [for the preparation of soft contact lenses, artificial corneas, and optical lenses for medical use, and a process for manufacturing the same essentially comprising the steps of preparing a solution by either mixing a 2-hydroxyethyl methacrylate mono mer, a vinyl acetate monomer and a cross-linking monomer, or mixing a Z-hydroxyethyl methacrylate monomer, a. vinyl acetate monomer and a cross-linking monomer, an N-(1,1-dimethyl-3-oxobutyl) acrylamide, adding a catalyst ...
Acuvue contact Lenses at Walgreens.com! Free shipping,Acuvue rebates,FSA,/HSA,daily promotions! ALL Acuvue lenses: Acuvue Oasys,Acuvue Oasys For Astigmatism,Acuvue Moist,Acuvue 2,Acuvue Advance,Acuvue Trueye,Acuvue Bifocal,Acuvue Presbyopia & more!
Recall Class: Class I. Date Recall Initiated: November 15, 2011. Product(s): AVAIRA AQUAFORM Comfort Science enfilcon A Daily Wear SPHERE Soft Contact Lenses (disposable). Go to the CooperVision recall web page at www.coopervision.com/international-recall [1], and enter the package lot number to determine whether the lenses have been recalled or contact the toll-free consumer hotline at 1-855-526-6737.. These lenses were manufactured from February 1, 2011 through August 24, 2011 and distributed from March 2, 2011 through November 15, 2011.. Use: For the correction of myopia or hyperopia in aphakic and non-aphakic persons with non-diseased eyes. The lenses may be worn by persons who exhibit astigmatism of 2.00 diopters or less that does not interfere with visual acuity. Recalling Firm:. CooperVision Inc. 6150 Stoneridge Mall Road, Suite 370. Pleasanton, California 94588. Reason for Recall: The unintended presence of a silicone oil residue on AVAIRA Sphere soft contact lenses. Symptoms may range ...
Participants were equally randomized to one of 6 treatment sequences: RD2117-01, Air Optix Aqua, Acuvue Oasys; RD2117-01, Acuvue Oasys, Air Optix Aqua; Air Optix Aqua, RD2117-01, Acuvue Oasys; Air Optix Aqua, Acuvue Oasys, RD2117-01; Acuvue Oasys, RD2117-01, Air Optix Aqua; Acuvue Oasys, Air Optix Aqua, RD2117-01. All participants wore each of the 3 lenses for one week ...
There is prepared a hydrophilic water swellable, water insoluble copolymer of (1) at least 35% of a hydroxy (C2 -C4 -alkyl)-2-alkenoate, (2) 30 to 60% of a 2-alkenamide or an N, N-di (C1 -C6 -alkyl)2-alkenamide, (3) 5 to 20% of R --OR1 --x Z where R is C1 -C6 alkyl, R1 is C2 -C4 alkylene, x is an integer of 1 to 4 and Z is 2-alkenoyloxy and (4) 0.3 to 5% of a polyethylenically unsaturated crosslinking agent having a relatively long aliphatic chain, the copolymer being capable of holding 50 to 80 weight % of water. The polymers are particularly useful in preparing hydrophilic contact lenses of high burst strength and extended wear properties.
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trueye 1 day acuvue uv block contact lens 1-Day Acuvue TruEye worlds FIRST daily disposable contact lens that comes in a new breathable silicone hydrogel material. TruEye has an innovative silicone hydrogel material saturated locked-in super smooth wetting agent which does not slow release onto the eye. Acuvues new TruEye contact lenses are truly remarkable you will regain incredible white eyes and comfort at end day because the super wet and super smooth surface has the lowest friction coefficient of any one day disposable lens on the market today. This great news for contact lens wearers experiencing pink eyes after long day. 1 Day Acuvue TruEye contact lens material UV blocking. Please note, UV blocking is not a substitute for sunglasses.
trueye 1 day acuvue uv block contact lens 1-Day Acuvue TruEye worlds FIRST daily disposable contact lens that comes in a new breathable silicone hydrogel material. TruEye has an innovative silicone hydrogel material saturated locked-in super smooth wetting agent which does not slow release onto the eye. Acuvues new TruEye contact lenses are truly remarkable you will regain incredible white eyes and comfort at end day because the super wet and super smooth surface has the lowest friction coefficient of any one day disposable lens on the market today. This great news for contact lens wearers experiencing pink eyes after long day. 1 Day Acuvue TruEye contact lens material UV blocking. Please note, UV blocking is not a substitute for sunglasses.
Designed specifically for use during chemical disinfection of soft (hydrophilic) contact lenses, the ReNu® leak proof lens case is compact, durable, and easy to use. To prevent lens mix-ups, left and right caps are clearly marked. Caps form a leak-proof seal, and they open and close easily. Lens cases can be a significant source of microbial contamination. To help prevent eye infections, lens cases should be cleaned, rinsed, and air dried every day and replaced at least every three months ...
A non-suction cup-type instrument for the insertion and removal of soft contact lenses is made of surgical rubber. It includes a central portion which looks somewhat like a suction cup having two sides cut away, and has small wedge-shaped contact lens-engaging elements or members protruding inwardly from each side of this suction cup-like member. It is again particularly noted that no suction cup action is involved in the present instrument. The instrument is also provided with two resilient arms which are aligned with the wedge-shaped contact lens engaging elements and which may be employed to support these elements and hold the lens more firmly once they are engaged. The space between the two wedge-shaped contact lens-engaging members, which incidentally have an overall configuration corresponding to opposed segments of a circle, is such that they are spaced apart by slightly less than the diameter of a contact lens.
Lenses featuring multifocality lenses visual performance, in particular when fitting completion will be charged at moist standard fee. The lenses can be worn all day, remembering to up my supply of my monthlies and contact be. For acuvue undistorted vision, the cornea should be smooth and assurance, and have a CE safety certification.. Contact lenses enhance a lenses coloured eye whereas others lenses acuvue many of the top brands in Australia. Long ago, during the 1950s, the farmers realized that lenses largest inventory of contact lenses - almost 10 lenses to enhance their appearance. Johnson and Johnsons 1 Day Acuvue Moist offers the cost and shipped free with the next order, provided that the lens manufacturer acuvue moist for astigmatism monthly the lens is defective. Contact lenses allow you to enjoy the benefits of clear vision without having to wear prescription eyeglasses moist our products. The lenses can be worn moist day, contact to acuvue and care information before using our ...
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Antimicrob Agents Chemother. 2008 Jan;52(1):171-82. Epub 2007 Nov 12. Research Support, N.I.H., Extramural; Research Support, Non-U.S. Govt
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Centers RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.. ...
Soft contact lens - Bausch + Lomb Biotrue Multipurpose Solution for Soft Contact.... We provides discount Herbal health and beauty products made in USA. Find on-line health supplements and Herbal beauty products here.
The purpose of this study was to assess whether differences in central corneal dendritic immune cell densities associated with combinations of soft contact lenses and lens care solutions could be detected by in vivo confocal microscopy. Partici
Works like your eyes. Up to 20 hours of moisture (Our laboratory research shows that Biotrue multi-purpose solution helps keep lenses moist for up to 20 hours. Wed love to hear how Biotrue multi-purpose solution is making wearing your contacts easier on your eyes). Makes wearing lenses easier on your eyes. pH balanced to match healthy tears. Kills 99.9% of germs. Conditions, cleans, removes protein, disinfects, rinses, stores, for soft contact lenses including silicone hydrogel lenses. Sterile. Biotrue multi-purpose solution for soft contact lenses including silicone hydrogel lenses. The world can be tough on your eyes when you wear contact lenses. In a world of less sleep and more computer use it can be difficult for your eyes to stay comfortable and moist, especially when wearing contacts. Biotrue multi-purpose solution makes wearing contact lenses easier on your eyes. Biotrue is easier on your eyes because it works like your eyes. Biotrue has the same pH as healthy tears and a lubricant ...
While silicone hydrogel lenses tend to allow for sufficient air permeability, the traditional hydrogel varieties do not. According to a 2004 article by Robert B. Steffen and Kevin P. McCabe in Contact Lens Spectrum, a common problem with traditional hydrogel lenses is that they do not let in enough air. This can cause your contacts and eyes to feel dry after long periods (throughout a day), and in worst-case scenarios, can cause corneal edema. According to Innvista, corneal edema is your bodys response to excessive dryness of the eye and is associated with the soaking of the cornea with fluids. These fluids can cause blurred vision, halos around lights, and eye pain ...
UV PROTECTION. Consumer research has shown that UV protection is an important lens attribute for patients. In fact, 3 of 4 patients report that they want UV protection from their contact lenses, and 1 of 2 say they would switch brands for UV protection. Since 1997, ACUVUE® Brand Contact Lenses have led the way in UV blocking. All ACUVUE® Brand Contact Lenses are FDA approved to help provide protection against transmission of harmful UV radiation to the cornea and into the eye.*. ACUVUE® Brand Contact Lenses block approximately 82% of UV-A radiation and 97% of UV-B radiation. On the average, contact lenses without UV blocking block approximately 10% of UV-A radiation and 30% of UV-B radiation1.. 1 Harris MG, Hararifar M, Hirano K. Transmittance of tinted and UV-blocking disposable contact lenses. Optom Vis Sci 1999;76(3):177-180.. * WARNING: UV-absorbing contact lenses are NOT substitutes for protective UV-absorbing eyewear such as UV-absorbing goggles or sunglasses, because they do not ...
UPC 310119035887 B01IAI14CG 623588 Bausch and Lomb Biotrue for Soft Contact Lenses 10 oz Multi-Purpose Solution, 2 ct: Preferred 3:1 over the leading multi-purpose , also find 310119035887 barcode , images and shopping info of UPC 310119035887
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This research suggests "children are capable of soft, gas permeable and orthokeratology contact lens wear," says Jeffrey J. Walline, OD, PhD, associate dean for Research at The Ohio State University. "Although no single study provides a comprehensive examination of contact lens safety in children, a review of the literature provides consistent evidence of the safety of pediatric contact lens wear.". Based on three large prospective studies representing between 159 and 723 years of soft contact lens wear in eight- to 14-year-olds, the incidence of corneal infiltrative events is up to 136 per 10,000 years, Dr. Bullimore found. A large retrospective study found a rate of 97 per 10,000 years in eight- to 12-year-olds and 335 per 10,000 years in 13- to 17-year-olds.1 In comparison, Dr. Bullimore notes the incidence of symptomatic corneal infiltrative events in adults in the last decade was 432 per 10,000 patient years of mostly daily wear and 316 per 10,000 patient years for daily silicone hydrogel ...
Important information for contact lens wearers: ACUVUE® 2 COLOURS™ Brand Contact Lenses are available with and without vision correction, so even people without a need for vision correction can wear them once they complete an eye exam, are properly fitted and have had the lenses prescribed by an eye care professional. Although rare, serious eye problems can develop while wearing contact lenses. To help avoid these problems, follow the wear and replacement schedule and the lens care instructions provided by your eye doctor. Do not wear contact lenses if you have an eye infection, or experience eye discomfort, excessive tearing, vision changes, redness or other eye problems. If one of these conditions occurs, contact your eye doctor immediately. You should never share your lenses with anyone else. For more information on proper wear, care and safety, talk to your eye care professional and ask for Patient Instruction Guide, call 1-800-843-2020 or visit acuvue.com ...
Important information for contact lens wearers: ACUVUE® 2 COLOURS™ Brand Contact Lenses are available with and without vision correction, so even people without a need for vision correction can wear them once they complete an eye exam, are properly fitted and have had the lenses prescribed by an eye care professional. Although rare, serious eye problems can develop while wearing contact lenses. To help avoid these problems, follow the wear and replacement schedule and the lens care instructions provided by your eye doctor. Do not wear contact lenses if you have an eye infection, or experience eye discomfort, excessive tearing, vision changes, redness or other eye problems. If one of these conditions occurs, contact your eye doctor immediately. You should never share your lenses with anyone else. For more information on proper wear, care and safety, talk to your eye care professional and ask for Patient Instruction Guide, call 1-800-843-2020 or visit acuvue.com ...
... Contact Lenses (as low as $17.99 for 6 packs) at 1-800-GET-LENS ® - Lowest Price Guaranteed on Acuvue Oasys Contact Lenses. Take advantage of our discounted prices (as low as $17.99 for 6 packs) and purchase your Acuvue Oasys contact lenses online now. Acuvue Oasys contact lenses are manufactured by Johnson & Johnson.
Important information for contact lens wearers: ACUVUE® 2 COLOURS™ Brand Contact Lenses are available with and without vision correction, so even people without a need for vision correction can wear them once they complete an eye exam, are properly fitted and have had the lenses prescribed by an eye care professional. Although rare, serious eye problems can develop while wearing contact lenses. To help avoid these problems, follow the wear and replacement schedule and the lens care instructions provided by your eye doctor. Do not wear contact lenses if you have an eye infection, or experience eye discomfort, excessive tearing, vision changes, redness or other eye problems. If one of these conditions occurs, contact your eye doctor immediately. You should never share your lenses with anyone else. For more information on proper wear, care and safety, talk to your eye care professional and ask for Patient Instruction Guide, call 1-800-843-2020 or visit acuvue.com ...
Important information for contact lens wearers: ACUVUE® 2 COLOURS™ Brand Contact Lenses are available with and without vision correction, so even people without a need for vision correction can wear them once they complete an eye exam, are properly fitted and have had the lenses prescribed by an eye care professional. Although rare, serious eye problems can develop while wearing contact lenses. To help avoid these problems, follow the wear and replacement schedule and the lens care instructions provided by your eye doctor. Do not wear contact lenses if you have an eye infection, or experience eye discomfort, excessive tearing, vision changes, redness or other eye problems. If one of these conditions occurs, contact your eye doctor immediately. You should never share your lenses with anyone else. For more information on proper wear, care and safety, talk to your eye care professional and ask for Patient Instruction Guide, call 1-800-843-2020 or visit acuvue.com ...
Important information for contact lens wearers: ACUVUE® 2 COLOURS™ Brand Contact Lenses are available with and without vision correction, so even people without a need for vision correction can wear them once they complete an eye exam, are properly fitted and have had the lenses prescribed by an eye care professional. Although rare, serious eye problems can develop while wearing contact lenses. To help avoid these problems, follow the wear and replacement schedule and the lens care instructions provided by your eye doctor. Do not wear contact lenses if you have an eye infection, or experience eye discomfort, excessive tearing, vision changes, redness or other eye problems. If one of these conditions occurs, contact your eye doctor immediately. You should never share your lenses with anyone else. For more information on proper wear, care and safety, talk to your eye care professional and ask for Patient Instruction Guide, call 1-800-843-2020 or visit acuvue.com ...
Important information for contact lens wearers: ACUVUE® 2 COLOURS™ Brand Contact Lenses are available with and without vision correction, so even people without a need for vision correction can wear them once they complete an eye exam, are properly fitted and have had the lenses prescribed by an eye care professional. Although rare, serious eye problems can develop while wearing contact lenses. To help avoid these problems, follow the wear and replacement schedule and the lens care instructions provided by your eye doctor. Do not wear contact lenses if you have an eye infection, or experience eye discomfort, excessive tearing, vision changes, redness or other eye problems. If one of these conditions occurs, contact your eye doctor immediately. You should never share your lenses with anyone else. For more information on proper wear, care and safety, talk to your eye care professional and ask for Patient Instruction Guide, call 1-800-843-2020 or visit acuvue.com ...
Important information for contact lens wearers: ACUVUE® 2 COLOURS™ Brand Contact Lenses are available with and without vision correction, so even people without a need for vision correction can wear them once they complete an eye exam, are properly fitted and have had the lenses prescribed by an eye care professional. Although rare, serious eye problems can develop while wearing contact lenses. To help avoid these problems, follow the wear and replacement schedule and the lens care instructions provided by your eye doctor. Do not wear contact lenses if you have an eye infection, or experience eye discomfort, excessive tearing, vision changes, redness or other eye problems. If one of these conditions occurs, contact your eye doctor immediately. You should never share your lenses with anyone else. For more information on proper wear, care and safety, talk to your eye care professional and ask for Patient Instruction Guide, call 1-800-843-2020 or visit acuvue.com ...
Important information for contact lens wearers: ACUVUE® 2 COLOURS™ Brand Contact Lenses are available with and without vision correction, so even people without a need for vision correction can wear them once they complete an eye exam, are properly fitted and have had the lenses prescribed by an eye care professional. Although rare, serious eye problems can develop while wearing contact lenses. To help avoid these problems, follow the wear and replacement schedule and the lens care instructions provided by your eye doctor. Do not wear contact lenses if you have an eye infection, or experience eye discomfort, excessive tearing, vision changes, redness or other eye problems. If one of these conditions occurs, contact your eye doctor immediately. You should never share your lenses with anyone else. For more information on proper wear, care and safety, talk to your eye care professional and ask for Patient Instruction Guide, call 1-800-843-2020 or visit acuvue.com ...
Important information for contact lens wearers: ACUVUE® 2 COLOURS™ Brand Contact Lenses are available with and without vision correction, so even people without a need for vision correction can wear them once they complete an eye exam, are properly fitted and have had the lenses prescribed by an eye care professional. Although rare, serious eye problems can develop while wearing contact lenses. To help avoid these problems, follow the wear and replacement schedule and the lens care instructions provided by your eye doctor. Do not wear contact lenses if you have an eye infection, or experience eye discomfort, excessive tearing, vision changes, redness or other eye problems. If one of these conditions occurs, contact your eye doctor immediately. You should never share your lenses with anyone else. For more information on proper wear, care and safety, talk to your eye care professional and ask for Patient Instruction Guide, call 1-800-843-2020 or visit acuvue.com ...
Important information for contact lens wearers: ACUVUE® 2 COLOURS™ Brand Contact Lenses are available with and without vision correction, so even people without a need for vision correction can wear them once they complete an eye exam, are properly fitted and have had the lenses prescribed by an eye care professional. Although rare, serious eye problems can develop while wearing contact lenses. To help avoid these problems, follow the wear and replacement schedule and the lens care instructions provided by your eye doctor. Do not wear contact lenses if you have an eye infection, or experience eye discomfort, excessive tearing, vision changes, redness or other eye problems. If one of these conditions occurs, contact your eye doctor immediately. You should never share your lenses with anyone else. For more information on proper wear, care and safety, talk to your eye care professional and ask for Patient Instruction Guide, call 1-800-843-2020 or visit acuvue.com ...
Important information for contact lens wearers: ACUVUE® 2 COLOURS™ Brand Contact Lenses are available with and without vision correction, so even people without a need for vision correction can wear them once they complete an eye exam, are properly fitted and have had the lenses prescribed by an eye care professional. Although rare, serious eye problems can develop while wearing contact lenses. To help avoid these problems, follow the wear and replacement schedule and the lens care instructions provided by your eye doctor. Do not wear contact lenses if you have an eye infection, or experience eye discomfort, excessive tearing, vision changes, redness or other eye problems. If one of these conditions occurs, contact your eye doctor immediately. You should never share your lenses with anyone else. For more information on proper wear, care and safety, talk to your eye care professional and ask for Patient Instruction Guide, call 1-800-843-2020 or visit acuvue.com ...
Important information for contact lens wearers: ACUVUE® 2 COLOURS™ Brand Contact Lenses are available with and without vision correction, so even people without a need for vision correction can wear them once they complete an eye exam, are properly fitted and have had the lenses prescribed by an eye care professional. Although rare, serious eye problems can develop while wearing contact lenses. To help avoid these problems, follow the wear and replacement schedule and the lens care instructions provided by your eye doctor. Do not wear contact lenses if you have an eye infection, or experience eye discomfort, excessive tearing, vision changes, redness or other eye problems. If one of these conditions occurs, contact your eye doctor immediately. You should never share your lenses with anyone else. For more information on proper wear, care and safety, talk to your eye care professional and ask for Patient Instruction Guide, call 1-800-843-2020 or visit acuvue.com ...
Important information for contact lens wearers: ACUVUE® 2 COLOURS™ Brand Contact Lenses are available with and without vision correction, so even people without a need for vision correction can wear them once they complete an eye exam, are properly fitted and have had the lenses prescribed by an eye care professional. Although rare, serious eye problems can develop while wearing contact lenses. To help avoid these problems, follow the wear and replacement schedule and the lens care instructions provided by your eye doctor. Do not wear contact lenses if you have an eye infection, or experience eye discomfort, excessive tearing, vision changes, redness or other eye problems. If one of these conditions occurs, contact your eye doctor immediately. You should never share your lenses with anyone else. For more information on proper wear, care and safety, talk to your eye care professional and ask for Patient Instruction Guide, call 1-800-843-2020 or visit acuvue.com ...
Important information for contact lens wearers: ACUVUE® 2 COLOURS™ Brand Contact Lenses are available with and without vision correction, so even people without a need for vision correction can wear them once they complete an eye exam, are properly fitted and have had the lenses prescribed by an eye care professional. Although rare, serious eye problems can develop while wearing contact lenses. To help avoid these problems, follow the wear and replacement schedule and the lens care instructions provided by your eye doctor. Do not wear contact lenses if you have an eye infection, or experience eye discomfort, excessive tearing, vision changes, redness or other eye problems. If one of these conditions occurs, contact your eye doctor immediately. You should never share your lenses with anyone else. For more information on proper wear, care and safety, talk to your eye care professional and ask for Patient Instruction Guide, call 1-800-843-2020 or visit acuvue.com ...
By combining your contact lens and buying group purchases through WVA, you receive a clear advantage when returning products. Currently, if you purchase a frame directly from the manufacturer and return it, you are left with a credit specific to that manufacturer. When that return is processed under your WVA Buying Group Account Number, the credit resides with WVA and you may use it to purchase any optical goods available through WVA.. You will always receive full credit on qualifying returns according to the manufacturers policies! In addition, there is no restocking fee on soft contact lenses.. ...
Clinical records from 166 patients with symptomatic CIEs and known EW status were reviewed, adjudicated and analyzed. Cases used ,50 SCL brands and ,10 LCP brands. Age, increasing CL Power, EW, reusable SCLs, silicone hydrogels and student status were significant univariate factors. In the multivariate analysis, age (1.05X/year; 1.03, 1.06 95% C.I.), EW (4.18X, 2.44, 7.15) and Reusable SCL (6.27X, 1.88, 20.97) were significant. Among daily wearers, the only significant factors were age (1.05X/year, 1.03, 1.08), reusable SCLs (11.48X, 1.41, 93.49) and silicone hydrogel SCLs (1.94X, 1.03, 3.66). Without DD, age (1.04X/year, 1.02, 1.06), EW (4.42X, 2.53, 7.71) and silicone hydrogel SCLs (1.80X, 1.01, 3.22) were significantly associated with CIEs. ...
Alkoloids from neonauclea reticulata (Havil) Merr. (Rubiaceae) -- Development of antihuman thymocyte / lymphocyte globulin : an immunosupressive agent. -- Cytotoxic activity of Bio-normalizer against human cancer cell lines. -- Isolation characterization and preservation of strain of lumunous bacteria obtained from intestinal content of Philippine marine fishes. -- Microbial contamination of the lens care system of soft contact lens wearers in the College of Science,De La Salle student population. -- Production of L-lysine by autotropic mutants -- Molecular analysis for the detection refampicin resistance in mycobacterium tuberculosis : a review ...
Proclear EP (Biomedics EP) are weekly disposable contact lenses manufactured by CooperVision. Enjoy great vision at every distance without bifocals or reading glasses! As we enter our 40s, the crystalline lens begins to lose its flexibility, making it more and more difficult for you to change focus and see arms length or close objects or reading material-and thus resulting in Presbyopia. Fortunately, Biomedics EPs unique optical design ensures youll see clearly near, far and everywhere in between-all with the comfort and convenience of soft contact lenses. Proclear EP (Biomedics EP )proven biocompatible lens material creates a deposit-resistant surface that keeps the lenses clean and healthy and PC Hydrogel lenses significantly exceed the minimum oxygen necessary for safe daily wear.. CooperVision has changed the brand name of Biomedics EP to Proclear EP. During the transition period all orders will be shipped as either Biomedics EP or Proclear EP. ...
Avaira Vitality™ toric is a two-week replacement lens that delivers the best of Avaira® toric plus enhanced features of higher water content and Class 1 UV protection.1 State-of-the-art silicone hydrogel means high oxygen transmissibility, whilst Optimized Toric Lens Geometry™ ensures a stable fit and clear vision. It all adds up to being a great fit for the vision correction and lifestyle needs of your patients with astigmatism.. Avaira Vitality toric achieves the same high standards as Avaira® toric.. Avaira Vitality toric offers everything your patients love about Avaira toric and more. Its rated similar to Avaira toric for comfort, vision quality and dryness2, but is also enhanced with higher water content and greater Class 1 UV protection.1 All this is available at the same affordable price as Avaira® toric.. Silicone hydrogel is the healthiest soft contact lens material.3. The third generation silicone hydrogel material used in Avaira Vitality toric is inherently wettable with no ...
Approval for a trade name change to the spherical (lotrafilcon A) soft contact lenses with wetting agent (l % Copolymer 845) in package saline, and the addition of descriptive text for symbols appearing on the cartons, except the Rx. symbol used for prescription use, as well as the trade name changes to all the lotrafilcon A lens designs. The device, as modified, will be marketed under the following trade names: Spherical - AIR OPTIX® NIGHT & DAY® AQUA; Toric - AIR OPTIX® NIGHT & DAY® AQUA ASTIGMATISM; Multifocal - AIR OPTIX® NIGHT & DAY® AQUA MULTIFOCAL; and Multifocal Toric - AIR OPTIX® NIGHT & DAY® AQUA MULTIFOCAL TORIC and is indicated for the following:. AIR OPTIXC® NIGHT & DAY® AQUA (lotrafilcon A) spherical soft contact lenses are indicated for the optical correction of refractive ametropia (myopia and hyperopia) in phakic or aphakic. persons with non-diseased eyes who have 1.50 diopters or less of astigmatism.. AIR OPTIX® NIGHT & DAY® AQUA for ASTIGMATISM (lotrafilcon A) ...
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Give Todd Helton this: Hes being proactive as he fights off the worst slump of his career.. Helton, hitting .250 with one home run and 10 RBIs, returned to Denver on Sunday night from the Rockies road trip to San Francisco and Arizona. His first order of business Monday was to consult with a local opthamologist, who fit him with soft contact lenses.. Helton, whose vision had been 20-15, wasnt given a number, but was informed that he needed corrective lenses. He took batting practice with the lenses in and is penciled in the six hole in the Rockies lineup.. "I needed contacts, thats all I know," said Helton. "It (his level of correction) wasnt bad. Its going to take some adjusting to them, I know that. So well see.". Helton twice has been moved out of his accustomed three hole as he battles his issues at the plate. He made nine starts in the five hole in May before returning to the No. 3 spot. But when his bat didnt come around on the road trip, manager Jim Tracy dropped him to the six ...
First, of all it is important to realize that glasses and contact lenses work very well to correct vision with many people achieving 20/20 vision by wearing glasses or contact lenses. However, some people do not like the appearance of glasses or are limited in their activities. For example, it is not possible to go snorkeling while wearing glasses. Other people with nearsightedness may want to wear contact lenses, but may be unable to because of recurrent eye irritation with contact lens use. If you do not like to wear glasses and you are unable to comfortably wear contact lenses, LASIK may be for you. Before you undergo LASIK your ophthalmologist will also take special pictures of your eye using a technique called corneal topography to verify that you are a good candidate for the procedure ...
First, of all it is important to realize that glasses and contact lenses work very well to correct vision with many people achieving 20/20 vision by wearing glasses or contact lenses. However, some people do not like the appearance of glasses or are limited in their activities. For example, it is not possible to go snorkeling while wearing glasses. Other people with nearsightedness may want to wear contact lenses, but may be unable to because of recurrent eye irritation with contact lens use. If you do not like to wear glasses and you are unable to comfortably wear contact lenses, LASIK may be for you. Before you undergo LASIK your ophthalmologist will also take special pictures of your eye using a technique called corneal topography to verify that you are a good candidate for the procedure ...
Our eye doctors provide comprehensive eye care, including management of eye disease and urgent care. We have almost all types of eyeglasses and contact lenses, astigmatism and bifocal lenses. Come SEE us.
The 1-DAY ACUVUE TruEye 30 Pack lens was developed with todays modern contact lens wearer in mind. Designed to help maintain the natural ocular environment, it contains a balance of properties that enables it to offer exceptional comfort, comparable to a contact lens-free eye.
Kerrisdale Optical is an Authorized Dealer in Vancouver for 1-day Acuvue contact lenses. Get$75 dollars 1-day acuvue contacts mail-in Rebate for your online order.
JACKSONVILLE, Fla. (April 4, 2013) - VISTAKON® Division of Johnson & Johnson Vision Care, Inc., and the makers of 1-DAY ACUVUE® MOIST® Brand Contact Lenses, today, announced the 2013 celebrity ensemble for this years
Yes. It appears that rigid gas permeable lenses are a bit safer than soft lenses.. But before you select a lens solely on that basis, remember that choosing a lens material is determined by many factors in addition to safety. Since both rigid and soft lenses are very safe (though rigid lenses are a bit safer), other factors may determine the best choice for your eyes. Much more important than the lens is when and how you wear it. Wearing contact lenses during sleep (called extended wear or flexible wear) is associated with a greater risk of corneal infection than lens wear in which the lenses are removed each night before sleep (called daily wear).. We dont yet know exactly why this happens, but it is believed to be related to the fact that there is much less oxygen available to the cornea when the eye is closed during sleep. Because of the added risk, the decision to wear contact lenses overnight is a serious one that should be made only after thorough discussion with your contact lens ...
Inspect the lens for any rips or tears. Also, make sure that the lens is not inverted. To ensure the lens is not inverted, place the lens on your fingertip to inspect it. If the lens is in the correct position, the edge of the lens will appear almost straight up. If the lens is inverted, the edges will flare out slightly. There are a number of lens manufacturers that have numbers or letters etched into the lens that act as an inversion indicator. ...
DAILIES TOTAL1® Water Gradient Silicone Hydrogel (SiHy) contact lenses represent a new era of comfort. They are the first water gradient silicone hydrogel daily disposable contact lenses featuring an increase from 33% to over 80% water content from core to surface. This innovative contact lens has the highest surface lubricityi and the highest breathability (or oxygen transmissibility) of any leading daily disposable contact lensii, delivering exceptional comfort that lasts to the end of the day ...
Click here for information on ACUVUE OASYS® for ASTIGMATISM Contact Lenses from Johnson & Johnson and order contact lenses today.
The International Journal of Polymer Science is a peer-reviewed, Open Access journal that publishes original research articles as well as review articles on the chemistry and physics of macromolecules.
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Purchase your Acuvue Oasys contact lenses online at JustLenses.com for as low as $114.50. Acuvue Oasys contact lenses are manufactured by Johnson & Johnson. (1-2 week disposable)
Well, its been a good week for my DALK recovery. I went back to Dr. Holland for my graft checkup and he said it was perfect. I also corrected to 20/20 on their refraction gear. I had already ordered a new, special soft contact (see last post) and was not able to take it with me to Dr. Holland. He wasnt bothered by that and said that if the soft lens worked for me, it would be fine for my eye.. The downside to the soft lens (at least the first one I tried) is it corrected me only slightly better than 20/30. This means there is room for improvement. But the comfort is … amazing! The fitter (Tamra at Dr. Kofflers office here in Lexington) seems to think that I should wear it for a week and then we may want to correct the power to hit near 20/20.. Other questions answered:. ...
Well, its been a good week for my DALK recovery. I went back to Dr. Holland for my graft checkup and he said it was perfect. I also corrected to 20/20 on their refraction gear. I had already ordered a new, special soft contact (see last post) and was not able to take it with me to Dr. Holland. He wasnt bothered by that and said that if the soft lens worked for me, it would be fine for my eye.. The downside to the soft lens (at least the first one I tried) is it corrected me only slightly better than 20/30. This means there is room for improvement. But the comfort is … amazing! The fitter (Tamra at Dr. Kofflers office here in Lexington) seems to think that I should wear it for a week and then we may want to correct the power to hit near 20/20.. Other questions answered:. ...
Purchase your 1-Day Acuvue Moist contact lenses online at JustLenses.com for as low as $28.95. 1-Day Acuvue Moist contact lenses are manufactured by Johnson & Johnson. (daily disposable)
Interested in wearing Acuvue Oasys® 1-Day with HydraLuxe™ contact lenses? Dr. Mack reviews everything you need to know before being fit with these contacts!
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Sterile 2 fl oz (60 ml). Lens case included. Conditions, cleans, removed protein, disinfects, rinses, and stores. For soft contact lenses including silicone hydrogel lenses. New & improved. Triple disinfectant system. Kills 99.9% of germs (Based on ISO 14729 testing against the 5 panel organisms). Provides up to 20 hours of moisture! Triple Disinfectant System: Unique formula leverages 3 disinfectants to provide excellent disinfection. Excellent Cleaning: When used daily, renu Advanced Formula Multi-Purpose Solution cleans & helps prevent the formation of deposits on lenses. All Day Comfort: Conditions and hydrates lenses for all day comfort. 100% Satisfaction Guaranteed: Your satisfaction with Renu Advanced Formula Multi-Purpose Solution is guaranteed or your money back. If you are not completely satisfied, or need additional product information call 1-800-553-5340. Renu Advanced Formula Multi-Purpose Solution has a unique triple disinfectant system. When used daily, renu Advanced Formula ...
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Beverley Opticians, 1 Day Acuvue Moist Multifocal, acuvue, J&J, 1 days, multifocal, varifocal, contacts, sports, Contact Lenses, Dyslexia Test, Tinted Glasses,
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Acuvue Contact Lenses - Oasys, 1 day moist, Astigmatism and Advanced. Only Acuvue has 4 stability zones giving you sharp consistent comfortable vision.
Multi-purpose contact lens care solution for soft contact lenses, 360 ml, removes protein deposits during the storage. Comes with contact lens case (27.50 EUR per liter).
Tell your doctor or healthcare professional if your symptoms do not start to get better or if they get worse.. Do not treat diarrhea with over the counter products. Contact your doctor if you have diarrhea that lasts more than 2 days or if it is severe and watery.. This medicine can color your teeth, urine, sweat, tears, and mucous. The color may stain your teeth for good. The color in tears may also stain soft contact lenses for good. If you wear contact lenses, ask your doctor or health care professional when you can use your lenses again.. You may need blood work done while you are taking this medicine.. Birth control pills may not work properly while you are taking this medicine. Talk to your doctor about using an extra method of birth control.. ...
Tell your doctor or healthcare professional if your symptoms do not start to get better or if they get worse.. Do not treat diarrhea with over the counter products. Contact your doctor if you have diarrhea that lasts more than 2 days or if it is severe and watery.. This medicine can color your teeth, urine, sweat, tears, and mucous. The color may stain your teeth for good. The color in tears may also stain soft contact lenses for good. If you wear contact lenses, ask your doctor or health care professional when you can use your lenses again.. You may need blood work done while you are taking this medicine.. Birth control pills may not work properly while you are taking this medicine. Talk to your doctor about using an extra method of birth control.. ...
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General definition in lens geometry: The distance between an extension of the BCOR (back central optic radius) and the absolute edge of the lens; when measured parallel to the optical axis, axial edge lift (AEL); when measured along the radius, radial edge lift (REL). The term is also used when the base curve of a lens is too flat with the consequence that the edge of the lens is lifting excessively so that lens alignment with the cornea is interrupted. Often the lens will ride on the lower lid margin causing varying degrees of discomfort. Edge lift does not reduce or settle with silicone hydrogel lenses and the patient should not be fitted with lenses with this appearance. If possible a steeper basecurve should be trial fitted and assessed. Alternative expressions are lens fluting or lens buckling.. ...
This high quality, discount Contacts product Acuvue Oasys 6 Pack from AcuVue is now discounted to $22.75 from the store Price Smart Contacts
We collect your personal information to process your registration request for this ACUVUE® product trial offer and for our relative administrative purposes. If you did not give us your personal information we would be unable to process your registration request. Your personal information will be processed and stored by our contracted service provider who supports this web site on our behalf and they are located in HongKong. Your contact details will be shared with the optometrist you have selected from our website for the specific purpose of them contacting you and making an appointment with you to participate in the ACUVUE® product trial. ...
Safety glasses with side shields. · Chemical goggles. · Contact lenses may pose a special hazard; soft contact lenses may absorb and concentrate irritants. A written policy document, describing the wearing of lens or restrictions on use, should be created for each workplace or task. This should include a review of lens absorption and adsorption for the class of chemicals in use and an account of injury experience. Medical and first- aid personnel should be trained in their removal and suitable equipment should be readily available. In the event of chemical exposure, begin eye irrigation immediately and remove contact lens as soon as practicable. Lens should be removed at the first signs of eye redness or irritation - lens should be removed in a clean environment only after workers have washed hands thoroughly. [CDC NIOSH Current Intelligence Bulletin 59 ...
Todays environments can create tired, dry eyes. With ACUVUE OASYS IN, DRY is OUT. Whether youre inside or outside, challenging environments can make your eyes feel tired and dry.
The invention features polymeric hydrogel contact lenses containing an anti-glaucoma medication, such as a beta adrenergic receptor antagonist, e.g., timolol maleate, or an alpha adrenergic receptor agonist, e.g., brimonidine tartrate, and methods of fabrication and uses thereof. A medication is passively transferred into a contact lens by absorption from a dilute aqueous solution. Such treated lenses are contacted with the ocular fluid of an individual to treat glaucoma.
The SynergEyes® A lens is the perfect choice for patients with astigmatism seeking better vision and more comfort in a contact lens. Soft contact lenses often compromise crisp vision while rigid lenses can be less comfortable and unstable on the eye. With SynergEyes® hybrid lenses, the breathable rigid center promotes corneal health and delivers high-definition vision, even at night, while the soft skirt provides comfort and stability all day long. SynergEyes® is free from toric lens rotation, a common problem associated with soft toric lenses that causes inconsistent vision. SynergEyes® optics remain stable, delivering consistently clear vision, blink after blink. SynergEyes® eliminates the problem of irritating debris that can collect under conventional rigid lenses. And you wont experience the annoyance of rigid lenses moving when you blink or dislodging with your active lifestyle ...
Alcon Clear Care Cleaning and Disinfecting Solution, Deep Cleans Loosens Dirt Enhances Protein Removal For All Soft Contact Lenses Lens Case Included
PLEASE NOTE: You should not wear your soft contact lenses a week prior to your consultation and gas permeable lenses two weeks prior to your consultation. Water coming out of shower head. Aqueous humour is produced by a part of the eye called the ciliary body. We believe in working with your natural features to create a long lasting look that enhances your natural beauty. Remember, we want to magnify everything for the audience! The dye, is made using a mineral base that typically does not cause an allergic reaction. This was so that it would be thick enough to give depth but not so thin that it would go off extremely quickly.. For lipstick, he or she should dip it in alcohol, then scrape off the top layer, and use a new, disposable applicator-not his or her finger-or a brush sprayed with alcohol. Well, its party time honey, because you are at the right place, to get started on a complete prom makeup and hair do make over guide that is going to change your outlook. After your surgery you should ...
|H2|Fights germs, cleans lenses, and removes irritating protein deposits for a fresh lens feeling!|/H2|Proven to be safe and effective for all soft contact lenses. When used daily, it does not require the use of a separate enzyme cleaner. |br /||br /||H3|
Biotrue - For cleaning and storage of all types of soft contact lenses. Contains: 1 x 500 ml. Also includes a cleaner case for your lenses. Availability: In stock
ROCKVILLE, Md. - An outbreak of Fusarium keratitis in 17 states linked to both soft contact lenses and contact solution prompted the FDA to issue a public health alert to physicians and weare
Adore Multipurpose is a solution for the care of all types of soft contact lenses. It cleans, rinses, disinfects, hydrates, preserves and lubricates contacts, and also removes protein deposits and lipids.
The patient should be told that rifampin may produce a reddish coloration of the urine, sweat, sputum, and tears, and the patient should be forewarned of this. Soft contact lenses may be permanently stained. The patients should be advised that the reliability of oral or other systemic hormonal contraceptives may be affected; consideration should be given to using alternative contraceptive measures. Patients should be instructed to take rifampin either 1 hour before or 2 hours after a meal with a full glass of water. Patients should be instructed to notify their physicians promptly if they experience any of the following: fever, loss of appetite, malaise, nausea and vomiting, darkened urine, yellowish discoloration of the skin and eyes, and pain or swelling of the joints. Compliance with the full course of therapy must be emphasized, and the importance of not missing any doses must be stressed.. ...
Dr. Nearings clinical interests include routine and diabetic eye exams, as well as screening exams for drug toxicities. She also enjoys fitting a variety of soft contact lenses and teaching the residents refracting skills.. ...
Conclusions The duration of putative centralized corneal neuropathic pain exceeded 2 years at the time of our initial consultation in all patients. This cohort consisted of 15 women and 6 men. 62% of patients reported a pain-free interval between the resolution of surgical pain and onset of chronic corneal pain which ranged from 3 days to 15 years. Excluding the 15 year outlier, the median delay in the onset of chronic pain following surgery was 1.5 years. 14 of 17 patients who had worn soft contact lenses prior to surgery had developed intolerance to these devices. Of the 4 patients without. ...
Conclusions: The duration of centralized corneal neuropathic pain exceeded 2 years at the time of the initial consultation in all patients. This cohort consisted of 15 women and 6 men. 62% of patients reported a pain-free interval between the resolution of surgical pain and onset of chronic corneal pain that ranged from 3 days to 15 years. Excluding the 15 year outlier, the median delay in the onset of chronic pain following LKS was 1.5 years. 14 of 17 patients who had worn soft contact lenses prior to surgery had developed intolerance to these devices. Of the 4 patients without. ...
Do not use Rifadin if you are allergic to any ingredient in this or to any rifamycin (eg, rifabutin); if you are taking atazanavir, cabazitaxel, darunavir, delavirdine, dronedarone, etravirine, fosamprenavir, lurasidone, nifedipine, praziquantel, ranolazine, saquinavir, tipranavir, tyrosine kinase receptor inhibitor (eg, lapatinib), or voriconazole. Talk to your doctor or pharmacist before taking Rifadin if you have liver problems, you have any kidney problems, you have diabetes, you are under weight or malnourished, you have a rare blood problem called †porphyria’, if you are aged 65 years or older. Taking Rifadin may permanently stain soft contact lenses ...
The Therapeutic Goods Administration (TGA) has been notified by Johnson & Johnson Pacific that it is undertaking a consumer level rec
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Purpose: : To report on the incidence and type of adverse events in a group of Chinese children wearing silicone hydrogel contact lenses (CL) over a 12 month period. Methods: : In a prospective clinical trial, 240 children, aged 8 to 14 yrs were enrolled to wear silicone hydrogel CL (Lotrafilcon B, both single vision and novel myopia control CL) on a daily wear, monthly replacement schedule. The trial was part of Vision CRC myopia control studies conducted at Zhongshan Ophthalmic Centre, Guangzhou, China. Adverse events observed during the 12 month period were categorised using the BHVI/LVPEI categorisation system as Serious, Significant and Non-significant events. The total number of patient eye years in the study was determined. Incidence was calculated as the number of adverse events divided by the total number of patient eye years and reported as Incidence per 100 patient eye years (Incidence %). Results: : The number of patient eye years in the study was 411. There were no serious adverse ...
With the evolution of different types of contact lenses, a large number of options are now available for the existing as well as new contact lens users. The soft contact lens provides several advantages over the conventional rigid gas permeable contact lens. These lenses are easy to adjust and are made up of soft and flexible plastics that allow oxygen to pass through the cornea. Soft contact lenses also render high comfort as compared to rigid gas permeable contact lenses. Owing to these factors, soft contact lenses are estimated to record highest growth rate during the forecast period. On the other hand rigid gas permeable lenses are durable, resistant to deposit buildup and are easy to handle. However, the demand for the same is declining due to increasing preference for various kinds of soft contact lenses such as daily disposable, extended wear and weekly replacement contact lenses. Daily disposable and extended wear soft contact lenses markets represent two of the largest markets of 2012. ...
SATURDAY, Aug. 19, 2017 (HealthDay News) -- Keep your eye on your contact lens regimen if youre traveling this summer.. "Being prepared when traveling is key to eye safety," said Dr. Andrew Pucker, an associate professor at the University of Alabama at Birmingham School of Optometry. "While the vast majority of contact lens wearers believe they are compliant, up to 90 percent of patients fail to accurately complete at least one step of their care regimen," Pucker noted.. Either they wear contact lenses for more days than recommended, keep them in overnight, expose their lens to tap water or fail to fully follow the cleaning instructions given to them by their optometrist, he said.. Taking shortcuts in your eye care while traveling can exacerbate bad habits or create new dangers.. Here, Pucker provides tips about contact lens safety for vacationers:. Consider your destination: "Not all travel destinations have the same resources as the United States," Pucker said. You could lose your lenses and ...
Welcome to the Lens Mart Local Pages. Here you will find local resources about Acuvue For Astigmatism in Lancaster, SC and some related products that may be of interest to you. For your convenience, we have also compiled a list of businesses and services around Lancaster, including Eyeglass Stores, Optometrists, and Ophthalmologists that should help with your search. Before you take a look at the local resources, please browse through our competitively priced products that you could order from the comfort of your own home.
AsianProducts Contact Lens Solutions directory - It includes sources from Contact Lens Solutions manufacturers and Contact Lens Solutions suppliers, and those qualified Contact Lens Solutions manufacturer are extensively from china, Taiwan, Hong Kong.
Visian™ ICL Implantable Collamer Lens - Implantable Contact Lens. Reviewed by Marc Michelson, M.D.. LASIK Eye Surgery today is a safe and effective method of correcting nearsightedness, farsightedness and astigmatism for the vast majority of patients seeking Laser Vision Correction of their refractive eye conditions. In fact, LASIK surgery is by far the most common procedure to help those wishing to eliminate their dependence on eyeglasses and contact lenses. However, for some patients who are extremely nearsighted or myopic, those that have thin corneas or those that have other conditions that might predispose them to complications with LASIK, another alternative might be to find out if they are good candidates for Implantable Lenses to correct their vision. One such lens is the Verisyse Phakic Intraocular Lens and another is the Visian™ Implantable Collamer Lens (ICL).. The Visian™ Implantable Collamer Lens is another type of Phakic Intraocular Lens which is manufactured from a soft ...
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By coating electrodes made of silicon with a conducting polymer hydrogel, researchers developed a new technique to significantly improve the charge storage capacity of lithium-ion batteries.. Stanford University scientists have dramatically improved the performance of lithium-ion batteries by creating novel electrodes made of silicon and conducting polymer hydrogel, a spongy substance similar to the material used in soft contact lenses and other household products.. Writing in the June 4 edition of the journal Nature Communications, the scientists describe a new technique for producing low-cost, silicon-based batteries with potential applications for a wide range of electrical devices.. "Developing rechargeable lithium-ion batteries with high energy density and long cycle life is of critical importance to address the ever-increasing energy storage needs for portable electronics, electric vehicles and other technologies," said study co-author Zhenan Bao, professor of chemical engineering at ...
The Advanced Medical Optics (AMO) Complete® MoisturePlus™ contact lens solution has been linked to serious eye infections including the development of Acanthamoeba keratitis and microbial Keratitis. If you or a loved one have developed a corneal infection (keratitis) while using any multi-purpose contact lens solution, you should contact us immediately. You may be entitled to compensation and we can help.. Why You Should Choose Schmidt & Clark, LLP: Our law firm is one of the most active firms in the country regarding the ongoing Complete® MoisturePlus™ litigation. To learn more about us and our work, please click the following link: : Our Experience - Contact Lens Solution Litigation. Breaking News Regarding Acanthamoeba Keratitis & Complete® MoisturePlus™. ...
Wichterle thought pHEMA might be a suitable material for contact lenses and gained his first patent for soft contact lenses. On ... 1959 WICHTERLE, O.; LÍM, D. (9 January 1960). "Hydrophilic Gels for Biological Use". Nature. 185 (4706): 117-118. doi:10.1038/ ... Research into contact eye lenses at the Institute of Chemical Technology came to an end. The International Symposium on ... "CONTACT LENS HISTORY". andrewgasson.co.uk. Archived from the original (Microsoft FrontPage 4.0) on 29 January 2015. ASCR ...
Dreifus M.; Herben T.; Lim D.; Wichterle, O. Sbornik lekar sky (1960), 62 212-8. On the problem of contact lenses. Wichterle, O ... Otto Wichterle and Drahoslav Lim, "Process for producing shaped articles from three-dimensional hydrophilic high polymers", US ... During 1970 to 1974 he worked in Palo Alto, California, improving contact lenses materials and technology. When he returned to ... At the latter he led a team of scientists who researched tinting technologies for hydrogel contact lenses, materials for ...
Another technique incorporates internal rewetting agents to make the lens surface hydrophilic. A third process uses longer ... "Soft Contact Lens Care Products".. *^ www.feelgoodcontacts.com. "Caring For Contact Lenses - Feel Good Contact Lenses". www. ... the FDA labels non-corrective cosmetic contact lenses as decorative contact lenses. Like any contact lens, cosmetic lenses ... "International Contact Lens Prescribing in 2010". Contact Lens Spectrum. October 2011. *^ Agarwal, R. K. (1969), Contact Lens ...
It is used in the manufacture of soft contact lenses, and is considered a low hydration hydrogel of nonionic polymer. Zia ... Polymacon is a non-proprietary (i.e., generic) term for a hydrophilic polymer of 2-hydroxyethylmethacrylate (HEMA) cross-linked ...
... it was one of the first materials to be successfully used in the manufacture of flexible contact lenses HEMA is also used as ... The polymer is hydrophobic; however, when the polymer is subjected to water it will swell due to the molecule's hydrophilic ...
... contact lenses MeSH E07.532.276.360 --- contact lenses, hydrophilic MeSH E07.532.276.360.220 --- contact lenses, extended-wear ... lenses, intraocular MeSH E07.695.510 --- maxillofacial prosthesis MeSH E07.695.510.500 --- mandibular prosthesis MeSH E07.695. ... MeSH E07.532.300 --- eyeglasses MeSH E07.532.460 --- lenses, intraocular MeSH E07.565.500 --- quantum dots MeSH E07.605.500 ...
These 'water-loving' soft contact lens materials are categorized as "Conventional Hydrophilic Material Groups ("-filcon"): Note ... "Contact Lens Materials: Advocating a New Lens Group". Contact Lens Spectrum. Contact Lens Spectrum - February 2005 Issue. ... Soft contact lenses may be easier to adjust to and are more comfortable than rigid gas permeable lenses. Newer soft lens ... Lenses made of PMMA are called hard lenses. Soft contact lenses made of polyacrylamide were introduced in 1971. Below is a list ...
Hybrid Contact Lens Management. Contact Lens Spectrum: "Archived copy". Archived from the original on 23 December 2010. ... or hydrophilic lenses and, most recently, silicone hydrogel lenses. A soft lens has a tendency to conform to the conical shape ... Contact Lens & Anterior Eye: The Journal of the British Contact Lens Association. 33 (4): 157-166; quiz 205. doi:10.1016/j.clae ... Contact Lens & Anterior Eye. 22 (3): 87-90. doi:10.1016/S1367-0484(99)80044-7. PMID 16303411. "SoftPerm Hybrid Contact Lenses ...
Soft opaque contact lenses may be used to improve cosmesis and reduce the perception of double vision. Eye injury Cline D; ... Gashau, AG; Anand, A; Chawdhary, S (2006). "Hydrophilic acrylic intraocular lens exchange: Five-year experience". Journal of ... Behndig, A. (2002). "Results with a modified method for scleral suturing of intraocular lenses". Acta Ophthalmologica ...
It can also be found in multi-purpose contact lens cleaning solutions, where its purpose there is to help remove lipid films ... Poloxamer 407 is a hydrophilic non-ionic surfactant of the more general class of copolymers known as poloxamers. Poloxamer 407 ... from the lens. It can also be found in some mouthwashes. There is a research ongoing for using poloxamer 407 for aligning ... is a triblock copolymer consisting of a central hydrophobic block of polypropylene glycol flanked by two hydrophilic blocks of ...
Wichterle thought pHEMA might be a suitable material for a contact lens and gained his first patent for soft contact lenses.[ ... Wichterle, O.; Lím, D. (1960). "Hydrophilic Gels for Biological Use". Nature. 185 (4706): 117-8. Bibcode:1960Natur.185..117W. ... Pure pHEMA yields lenses that are too thick for sufficient oxygen to diffuse through, so all contact lenses that are pHEMA ... he succeeded in producing the first four pHEMA hydrogel contact lenses on a home-made apparatus. Copolymers of pHEMA are still ...
Disposable diapers where they absorb urine, or in sanitary napkins Contact lenses (silicone hydrogels, polyacrylamides, ... Play media A hydrogel is a network of polymer chains that are hydrophilic, sometimes found as a colloidal gel in which water is ... acrylate polymers and copolymers with an abundance of hydrophilic groups. Natural hydrogel materials are being investigated for ...
Historically, hard contact lenses were frequently made of this material. Soft contact lenses are often made of a related ... a substance with both hydrophobic and hydrophilic groups needs to be added to facilitate the suspension. ... In particular, acrylic-type contact lenses are useful for cataract surgery in patients that have recurrent ocular inflammation ... and it is used in the manufacture of rigid intraocular lenses which are implanted in the eye when the original lens has been ...
Like toric contact lenses, toric IOLs have different powers in different meridians of the lens, and they must be positioned on ... The trademarked "Natural Yellow" material is available in three hydrophilic IOLs. Dr. Patrick H. Benz of Benz Research and ... They have special vaulting so as not to be in contact with the normal lens. The main complication with older versions was a ... Intraocular lens is a lens implanted in the eye as part of a treatment for cataracts or myopia. The most common type of IOL is ...
Eye and Contact Lens. 36 (3): 170-176. doi:10.1097/ICL.0b013e3181db352f. PMID 20351555. Weiner, Myra L.; Lois A. Kotkoskie ( ... HPC has a combination of hydrophobic and hydrophilic groups, so it has a lower critical solution temperature (LCST) at 45 °C. ...
The first is contact applanation biometry. This technique requires placing an ultrasound probe on the central cornea. While ... aurolab.com/auroflextoric-hydrophilic-iol.asp Dr. Hill lens calculation materials - http://www.doctor-hill.com/iol-main/ ... The aim of an accurate intraocular lens power calculation is to provide an intraocular lens (IOL) that fits the specific needs ... All lens constants are estimates, to begin with. To obtain the best possible results, it is imperative that these constants be ...
October 2001). "Bacillus cereus keratitis associated with contact lens wear". Ophthalmology. 108 (10): 1830-4. doi:10.1016/ ... thus creating pores with hydrophilic interiors. The effect is loss of cellular membrane potential and eventually cell death. ...
Aug 2003). "Implantation of a single-piece, hydrophilic, acrylic, minus-power foldable posterior chamber intraocular lens in a ... Through mutual contacts Ridley asked David Apple to visit him at his home near Salisbury in England. Thus began a friendship ... Evolution of Intraocular Lenses in 1985 and Intraocular Lenses. Evolution, Designs, Complications, and Pathology in 1989. Dr. ... Apple started to study intraocular lenses (IOLs), including those explanted lenses which had been removed (explanted) from the ...
The UPW forms a puddle between the lens and the wafer, improving NA, and the UPW must be extremely pure. POU filtration is used ... With the large volume of UPW, which comes into contact with each wafer, particle deposition on the wafer readily occurs. Once ... hydrophilic and hydrophobic; and dissolved gases. UPW and commonly used term deionized (DI) water are not the same. In addition ... The ultrapure water is by definition extremely low in contamination, but once it makes contact with the wafer surface it ...
Lensing, M; van der Klis, J.D.; Fabri, T; Cazemier, A; Else, A.J. (2010). "Efficacy of a lactylate on production performance ... One non-peer-reviewed case study was reported in 2005 by Danish doctors regarding a 61-year-old woman with a history of contact ... Lactylates contain hydrophilic polar groups, which interact with water, and non-polar lipophilic groups, which interact with ... "Components of paper and paperboard in contact with aqueous and fatty foods.", Title 21 Code of Federal Regulations, part 172, ...
In contact with acidic environment, the hair's somewhat scaly surface tightens up, as the hydrogen bonds between the keratin ... Hair conditioners therefore usually contain cationic surfactants, which don't wash out completely, because their hydrophilic ... Circle contact lens. *Eyelash extensions. *Eyelid glue. *Eye liner. *Eye shadow. *Kohl ...
The DNA of a prokaryotic cell consists of a single chromosome that is in direct contact with the cytoplasm. The nuclear region ... A simple microscope is a microscope with only one biconvex lens, rather like a magnifying glass). He saw many small box like ... partly hydrophobic and partly hydrophilic). Hence, the layer is called a phospholipid bilayer, or sometimes a fluid mosaic ... 1632-1723: Antonie van Leeuwenhoek teaches himself to make lenses, constructs basic optical microscopes and draws protozoa, ...
The DNA of a prokaryotic cell consists of a single circular chromosome that is in direct contact with the cytoplasm. The ... A simple microscope is a microscope with only one biconvex lens, rather like a magnifying glass). He saw many small box like ... partly hydrophobic and partly hydrophilic). Hence, the layer is called a phospholipid bilayer, or sometimes a fluid mosaic ... 1632-1723: Antonie van Leeuwenhoek taught himself to make lenses, constructed basic optical microscopes and drew protozoa, such ...
Liquid micro-lens array activated by selective electrowetting on lithium niobate substrates S. Grilli, L. Miccio, V. Vespini, A ... Many such devices feature hydrophobic barriers on hydrophilic paper that passively transport aqueous solutions to outlets where ... without any physical contact. This technology focuses acoustic energy into a fluid sample in order to eject droplets as small ...
In 1772, the French scientist Antoine Lavoisier used a lens to concentrate the rays of the sun on a diamond in an atmosphere of ... However, when diamond surfaces are chemically modified with certain ions, they are expected to become so hydrophilic that they ...
Concentrator photovoltaics (CPV) and high concentrator photovoltaic (HCPV) systems use optical lenses or curved mirrors to ... hydrophobic or hydrophilic) on soiling or snow losses.[31] (Although in heavy snow environments with severe ground interference ... In addition, a CPV system requires optical lenses or mirrors and sometimes a cooling system. ...
Concentrator photovoltaics (CPV) and high concentrator photovoltaic (HCPV) systems use optical lenses or curved mirrors to ... hydrophobic or hydrophilic) on soiling or snow losses.[31] (Although in heavy snow environments with severe ground interference ... In addition, a CPV system requires optical lenses or mirrors and sometimes a cooling system. ...
Contact lenses. hydrophilic. Hydrogels. Silicones. Epithelium. corneal/physiology. Wound healing/physiology. Keratitis. ... Therapeutic contact lenses should not be indicated in the presence of active infectious keratitis or when the patient is not ... Therapeutic contact lenses are useful in a variety of ocular surface diseases. Their main indications are: to relieve the pain ... Silicon-hydrogel therapeutic contact lenses, due to their higher oxygen permeability, allow extended wear schedules, decreasing ...
The polymers are particularly useful in preparing hydrophilic contact lenses of high burst strength and extended wear ... There is prepared a hydrophilic water swellable, water insoluble copolymer of (1) at least 35% of a hydroxy (C2 -C4 -alkyl)-2- ... High-hydration contact lens. US4752627 *. Aug 13, 1986. Jun 21, 1988. Michael Froix. Clouding-resistant contact lens ... A hydrophilic polymer suitable for use as an extended wear soft contact lens must have high oxygen permeability and good ...
Long-term effects of hydrophilic contact lenses on myopia.. Andreo LK1. ... Myopic patients aged 14 to 19 years were divided randomly into two groups: those that wore contact lenses full time and those ... There appears to be no effect of soft contact lens wear on the progression of myopia. ...
Toyo Contact Lens Company, Limited. High toughness synthetic high polymers for soft contact lenses and a process for ... and a satisfactory contact lens was made. The contact lens made was left in water and a physiological saline solution for a ... Hydrophilic synthetic high polymers for soft contact lenses and a process for manufacturing the same. US 3813447 A ... United States Patent 3,813,447 HYDROPHILIC SYNTHETIC HIGH POLYMERS FOR SOFT CONTACT LENSES AND A PROCESS FOR MANUFACTURING THE ...
... and thereafter irradiating the contact lens with ultraviolet light. ... A contact lens is made hydrophilic by contacting the lens with a treating solution containing a hydrophilic monomer, at least ... A contact lens is made hydrophilic by contacting the lens with a treating solution containing a hydrophilic monomer, at least ... US4892402A - Method for making contact lens hydrophilic - Google Patents. Method for making contact lens hydrophilic Download ...
Preferably, the contact lens are prepared by molding the prepolymer into a contact lens mold, prior to polymerization, to ... The hydrated polymer gel is used to obtain a contact lens which resists nonspecific protein adsorption. ... biocompatible contact lens characterized by a surface which resists nonspecific protein adsorption. The method involves forming ... Polymer-based soft contact lenses are not new. U.S. Pat. No. 4,259,467 (Keogh et al.) discloses hydrophilic contact lenses ...
Effect of conventional hard and hydrophilic soft contact lenses on the corneal epithelium. Comparative study in tissue culture. ... Effect of conventional hard and hydrophilic soft contact lenses on the corneal epithelium. Comparative study in tissue culture. ... Contact BMJ. Online: ISSN 1468-2079Print: ISSN 0007-1161. Copyright © 2017 by the BMJ Publishing Group Ltd. All rights reserved ...
... biologically inert contact lens with the capability of transporting oxygen sufficiently to meet the requirements of the human ... The contact lens according to claim 1 wherein only one of Z.sub.1 -Z.sub.7 is a hydrophilic sidechain.. 16. Th contact lens ... When the term "hydrophilic soft contact lens" is used herein, it is meant that the soft contact lens surface will not repel ... There are commercially available both hydrophobic and hydrophilic contact lenses. The hydrophobic contact lenses available are ...
1 Color Contacts Products from Global $1 Color Contacts Suppliers and $1 Color Contacts Factory,Importer,Exporter at Alibaba. ... Tags: $1 Color Contact , Soft Hydrophilic Contact Lens , Best Seller Contact Lenses ... 1 Dollars Contacts Three Tone Colored Eye Contact Lens 3 Tone Color Contact Lenses , $1 Cheap Colored Contact Lenses Discount ... Realcon Super Natural 1 year contact lens cheap price contact lenses color contact lens ...
Another technique incorporates internal rewetting agents to make the lens surface hydrophilic. A third process uses longer ... "Soft Contact Lens Care Products".. *^ www.feelgoodcontacts.com. "Caring For Contact Lenses - Feel Good Contact Lenses". www. ... the FDA labels non-corrective cosmetic contact lenses as decorative contact lenses. Like any contact lens, cosmetic lenses ... "International Contact Lens Prescribing in 2010". Contact Lens Spectrum. October 2011. *^ Agarwal, R. K. (1969), Contact Lens ...
Sterilizing hydrophilic contact lenses. US4327731 *. 7 Jul 1980. 4 May 1982. Powell Nelson B. Moisture indicator. ... In a hydrated hydrogel of hydrophilic polymer material, the hydrophilic polymer material is desirably present at a ... The hydrated hydrogel conveniently comprises hydrophilic polymer material. Suitable hydrophilic polymer materials include ... wherein the hydrophilic polymer material is present at a concentration of at least 1% by weight based on the total weight of ...
Method of making polymeric contact lens. US3966847 *. 4 Ene 1974. 29 Jun 1976. Maurice Seiderman. Contact lens from hydrophilic ... Polymer compositions for contact lenses. US5264161 *. 5 Sep 1991. 23 Nov 1993. Bausch & Lomb Incorporated. Method of using ... Polymer compositions for contact lenses. US5274008 *. 14 Ene 1993. 28 Dic 1993. Bausch & Lomb Incorporated. Mold materials for ... Polymer compositions for contact lenses. US5010883 *. 8 May 1989. 30 Abr 1991. Smith & Nephew Associated Companies Plc. ...
Hydrophilic contact lenses for aphakia.. Carter DB, Brucker D.. Am J Optom Arch Am Acad Optom. 1973 Apr;50(4):316-9. No ... Loss of cell-matrix contact increases hypoxia-inducible factor-dependent transcriptional activity in glioma cells. ...
... derived from a crosslinking monomeric component in an amount effective to facilitate returning a deformed intraocular lens made ... New high refractive index polymeric compositions and foldable intraocular lenses made from such compositions are disclosed. In ... Hydrophilic surface modification of contact lenses. US20080221675 *. 22 May 2008. 11 Sep 2008. Alcon, Inc.. Dual Function UV- ... The intraocular lens of claim 8 wherein said hydrophilic monomeric component is selected from the group consisting of N-vinyl ...
Find high quality Crazy Eyes Contact Lenses Suppliers on Alibaba. ... Alibaba offers 44 Crazy Eyes Contact Lenses Suppliers, and ... Crazy Eyes Contact Lenses Manufacturers, Distributors, Factories, Companies. There are 20 OEM, 19 ODM, 3 Self Patent. ... Soft Hydrophilic Contact Lenses. Total Revenue: US$2.5 Million - US$5 Million ... Magic Eye Color Contact Lens , Natural Looking Color Contact Lenses , Look Beauty Contact Lenses , Eye Contact Lenses Supplier ...
Hydrophilic Contact Lenses in Aphakia Experience with Geriatric Patients Intolerant to Spectacle Lens Correction. Häkkinen, ... Effect of Contact Lens Wear on the Mitoses of Gorneal Epithelial Cells: Preliminary Report. Hamano, Hikaru; Hori, Masaki ... Electrophysiologic Studies on the Effect of Contact Lenses on Central Nervous System Activity. Naito, Hiroe; Yasuhara, Akihiro ... Changes in Corneal Curvature with Long-term PMMA Contact Lens Wear. Levenson, David S. ...
Hydrophilic contact lens made from polysiloxanes containing hydrophilic sidechains. US4260725 *. 10 Dec 1979. 7 Apr 1981. ... Silicone-containing contact lens polymers, oxygen permeable contact lenses and methods for making these lenses and treating ... Contact lens material. US4820747 *. 7 Sep 1988. 11 Apr 1989. Ocular Technologies, Inc.. Gas permeable contact lens and method ... Contact lenses. US20040213827 *. 11 Dec 2003. 28 Oct 2004. Enns John B.. Antimicrobial contact lenses and methods for their ...
This oxidation is followed by exposure to atmospheric air, until there is a substantial reduction in the air-water contact ... This process also provides lower coefficients of friction for general polymeric products in contact with water and aqueous ... Surfaces of hydrophobic polymers are treated to reduce their friction resistance characteristics when in contact with an ... Silicone contact lens with hydrophilic surface treatment. US4297187 *. 5 Oct 1979. 27 Oct 1981. Toray Industries, Inc.. Surface ...
For soft (hydrophilic) contact lenses. Not for cleaning or disinfection. Sterile. Questions or comments? Call us toll free at 1 ... Clear Care Rinse & Go Solution can be used for rinsing soft (hydrophilic) contact lenses after cleaning and disinfection. After ... Clear Care Rinse & Go Solution will not disinfect your contact lenses. Tamper Evident Seal: Do not use if the security seal is ... Precautions: Never reuse or top off old solution left in your lens case for storing lenses as this will diminish its ...
For soft (hydrophilic) contact lenses. Not for cleaning or disinfection. Questions or comments? Call us toll-free at 1-800-757- ... After disinfection, lenses may be stored in Clear Care Rinse & Go Solution for up to 30 days in the lens case. Lenses stored ... After disinfection, lenses may be stored in Clear Care Rinse & Go Solution for up to 30 days in the lens case. Lenses stored ... Solution will not disinfect your contact lenses. Precautions: Never reuse or top off old solution left in your lens case for ...
... a patient developed opacification of soft contact lenses used on the same side. Calcilm was demonstrated within the contact ... Contact Lenses, Hydrophilic*. Female. Humans. Lacrimal Apparatus Diseases / therapy*. Middle Aged. Optics and Photonics. Tears ... 19783466 - Toric lens orientation and visual acuity in non-standard conditions.. 12769156 - Rk4 (reverse-geometry) contact lens ... a patient developed opacification of soft contact lenses used on the same side. Calcilm was demonstrated within the contact ...
Lomb PureVision Multi-Focal contact lenses compared to the Bausch &a... ... Contact Lenses, Hydrophilic. Soft, supple contact lenses made of plastic polymers which interact readily with water molecules. ... However, contact lens wearers are at risk for contact le.... The characteristics of a preservative-free contact lens care ... lenses compared to the Bausch & Lomb SofLens59 contact lens when worn by adapted soft contact lens wearers on a daily wear ...
Forms hydrophilic gel network. Holds 38% water alone. With other monomers can hold 55-70%. Very stable. Good wettability ... Source can be lens, lens case, solution. Bacterial e.g. S. aureus, P. aeruginosa, attaches to surface of lens, can lead to ... Flexible plastic lens. Conforms to shape of cornea. Absorbs and binds water (hydroxyl and lactam groups). Better wetting than ... Lenses can get discoloured by: Local/systemic drugs e.g. rifampicin, sulphasalazine. Tobacco. Cosmetics. Buffering agents e.g. ...
The mold can produce finished contact lenses which do not require further machining. ... Location of the mold parting line tangent to the lens edge substantially eliminates registration problems when a relief groove ... A two piece contact lens mold having a pair of blunt, continuous mating surfaces extending around the periphery of the mold ... A mold for casting a hydrophilic contact lens blank. US3902693 *. 9 Ago 1974. 2 Sep 1975. American Optical Corp. Mold for ...
A number of hydrogels have been developed for use as contact lenses. These hydrogels keep a layer of water at the surface of ... The hydrophilic polymer can be a hydrophilic diol, a hydrophilic diamine or a combination thereof. The hydrophilic diol can be ... b) a hydrophilic polymer which is a member selected from the group consisting of a hydrophilic polymer diol, a hydrophilic ... b) a hydrophilic polymer which is a member selected from the group consisting of a hydrophilic polymer diol, a hydrophilic ...
  • The authors conclude that this new-generation GF raw material for IOLs is appropriate for intracorporeal application in the human body, with a composition that combines the advantages of hydrophobic and hydrophilic acrylic IOL materials. (aao.org)
  • The common classifications of hydrophobic and hydrophilic arose from the sessile drop method. (egms.de)
  • Due to a high surface energy and an entropy-caused stabilizing effect of the hydrophilic polymer chains, our coatings prevent surfaces from adsorbing dirt from aequous solutions. (innovations-report.de)
  • Hydrogel is a network of polymer chains that are hydrophilic, sometimes found as a colloidal gel in which water is the dispersion medium. (boloji.com)
  • This oxidation is followed by exposure to atmospheric air, until there is a substantial reduction in the air-water contact angle of the surfaces. (google.co.uk)
  • A two piece contact lens mold having a pair of blunt, continuous mating surfaces extending around the periphery of the mold cavity is disclosed. (google.es)
  • No. 4,209,289 discloses a mold having continuous mating surfaces with the parting line at the junction of the lens edge and anterior lens surface. (google.es)
  • The radii of surfaces 3 and 11 are selected to provide a chosen power and base curve in the lens product well known to those skilled in the contact lens art. (google.es)
  • Thoroughly rinse both surfaces of the lens. (intekom.com)
  • Thoroughly rinse both surfaces of the lens with OPTI-FREE EXPRESS solution. (intekom.com)
  • In this study, we found the optic surfaces where the contact angle measurements were made to be smooth at a magnification of 3000. (egms.de)
  • Neutrophil-derived extracellular debris has been shown to accelerate bacterial biofilm formation on hydrogel and silicone hydrogel contact lens surfaces compared to lenses inoculated with bacteria alone. (arvojournals.org)
  • Volume of residual debris on lens surfaces after cleaning was quantified using IMARIS software. (arvojournals.org)
  • Factors relating to silicone hydrogel lens use and increased risk for CIEs include the potential for increased microbial adhesion to silicone hydrogel contact lens surfaces and issues pertaining to lens care solution biocompatibility. (arvojournals.org)
  • bifocal lens one having two segments with different refracting power, the upper for far vision and the lower for near vision. (thefreedictionary.com)
  • omnifocal lens one whose power increases continuously and regularly in a downward direction, avoiding the discontinuity in field and power inherent in bifocal and trifocal lenses . (thefreedictionary.com)
  • Contact lenses vary not only in length of use and change frequency (daily wear, weekly wear, extended wear, monthly disposable) but also in shape and function (astigmatism, bifocal, single vision, dry eye), so it is important to know what options are available. (framesdirect.com)
  • Bifocal/multifocal lenses contain two or more kinds of correction by providing the wearer with simultaneous distant and near vision. (clecontactlenses.com)
  • The surface of the lens should be smooth in order not to affect the normal precorneal tear film and the superficial epithelial layer. (google.com)
  • You may use this product to rinse debris or daily cleaners from the surface of the lens or to use as a diluent for enzymatic lens cleaning products and to rinse lenses before wearing. (intekom.com)
  • Destroys harmful micro-organisms on the surface of the lens. (bausch.com)
  • 3. The contact lens according to claim 1 wherein X is selected from the group consisting of ##STR115## wherein n.sub.26 is an integer from 1 to about 10, ##STR116## wherein n.sub.27 is an integer from 1 to 10, ##STR117## wherein n.sub.28 is aninteger from 1 to about 10 and ##STR118## wherein n.sub.29 is an integer from 0 to about 10. (patentgenius.com)
  • 6. The contact lens according to claim 1 wherein Y.sub.1 is methyl and Y.sub.2 is phenyl. (patentgenius.com)
  • 7. The contact lens according to claim 1 wherein Y.sub.1 and Y.sub.2 are methyls. (patentgenius.com)
  • 8. The contact lens according to claim 1 wherein at least one but not all of Z.sub.1 through ##STR122## wherein ##STR123## and n.sub.32 equals 1. (patentgenius.com)
  • 9. The contact lens according to claim 1 wherein only one of Z.sub.1, Z.sub.2, Z.sub.5 and Z.sub.6 is a hydrophilic sidechain. (patentgenius.com)
  • 2. The intraocular lens of claim 1 wherein the homopolymers of said first monomeric component have a substantial degree of rigidity. (google.co.uk)
  • 6. The intraocular lens of claim 1 wherein said first constituent is a major amount by weight of said copolymer, and said first constituent and said second constituent together are at least about 80 % by weight of said copolymer. (google.co.uk)
  • 7. The intraocular lens of claim 1 wherein neither said second monomeric component nor said third monomeric component include any aryl-containing groups. (google.co.uk)
  • 8. The intraocular lens of claim 1 wherein said copolymer further includes a fourth constituent derived from a hydrophilic monomeric component other than said first, second and third monomeric components, said fourth constituent being present in an amount effective to reduce the tackiness of said copolymer relative to a substantially identical copolymer without said fourth constituent. (google.co.uk)
  • 9. The intraocular lens of claim 1 wherein each of said first, second and third monomeric components includes at least one functional group containing carbon-carbon unsaturation. (google.co.uk)
  • 3. A method in accordance with claim 1, wherein said hydrophilic polymer is a poly(ethylene)glycol selected from the group consisting of PEG 600, PEG 2000, Jeffamine D-230, Jeffamine ED-600, Jeffamine ED-900 and Jeffamine D-2000. (freepatentsonline.com)
  • A composition for rendering a hydrophobic surface hydrophilic. (patents.com)
  • Release was delayed due to a combination of increased hydrophobic to hydrophilic composition and the inclusion of additional structural constraints, both of which decreased the polymer volume fraction in the swollen state. (auburn.edu)
  • This study also showed that siloxane-containing contact lens materials differ in the degree to which they deposit lipid, which is dependent upon their chemical composition. (uwaterloo.ca)
  • From the HPLC studies it was found that contact lens material, concentration of the lipid doping solution, and the composition of the lipid doping solution in in vitro deposition studies influenced the ultimate amount and composition of lipid deposits. (uwaterloo.ca)
  • In vivo HPLC studies showed that the final lipid deposition pattern was influenced by the interaction between the composition of the tear film and the various silicone hydrogel contact lens materials. (uwaterloo.ca)
  • Lipid deposition was ultimately influenced by the concentration and composition of the lipid in the tear film and the contact lens material. (uwaterloo.ca)
  • 26086.1 E 2 Claims ABSTRACT OF THE DISCLOSURE Contact lenses are fabricated from a copolymer of a polysiloxanylalkyl acrylic ester and an alkyl acrylic ester. (google.ca)
  • The experimental study evaluated the performance of a disk-shaped single-piece hydrophilic acrylic IOL suspended between two haptic rings connected by a pillar of the haptic material. (aao.org)
  • The new material was tested and compared with reference acrylic materials: hydrophobic Acrysof IQ SN60WF material, hydrophobic Sensar AR40e material, and hydrophilic Ioflex IOL material. (aao.org)
  • 1 Day Acuvue Moist contact lenses with lacreon technology to retain moisture for comfortable contact lens wear. (eyecontacts.com.au)
  • 1 Day Acuvue Moist Contact Lenses retain moisture to keep your eyes fresh and comfortable even in dry enviornments. (eyecontacts.com.au)
  • The current range includes bestselling lenses 1-Day Acuvue Moist , Acuvue Oasys and 1 Day Acuvue Trueye , which are chosen by thousands of Vision Direct customers every month for their exceptional comfort and convenience. (visiondirect.co.uk)
  • 55% water content ensure the lenses stay hydrated & moist in your eyes throughout the day. (uniqso.com)
  • There is prepared a hydrophilic water swellable, water insoluble copolymer of (1) at least 35% of a hydroxy (C2 -C4 -alkyl)-2-alkenoate, (2) 30 to 60% of a 2-alkenamide or an N, N-di (C1 -C6 -alkyl)2-alkenamide, (3) 5 to 20% of R --OR1 --x Z where R is C1 -C6 alkyl, R1 is C2 -C4 alkylene, x is an integer. (google.com)
  • While the exact physiology behind presbyopia is not fully understood, it is believed to be related to a loss of elasticity of the crystalline lens. (framesdirect.com)
  • With Dailies Total1 Multifocal, Alcon has designed a unique contact lens that answers to the increased need for comfort and the expectation of a seamless visual experience of people with presbyopia. (novartis.com)
  • The most common symptoms of presbyopia are blurred vision at normal reading distance, including while wearing normal glasses or contact lenses, headaches, eyestrain and fatigue while reading or doing close-up work. (novartis.com)
  • I demo'd different brands since I have very poor vision and high presbyopia and the Ciba Vision Air Optix Aqua contact lenses gave me the clearest vision. (justlenses.com)
  • Simard P, Bitton E. The use of high modulus silicone hydrogel (SiHy) lens in the management of epithelial defects. (clspectrum.com)
  • Adverse events associated with mechanical trauma such as superior epithelial arcuate lesions, localized papillary conjunctivitis and conjunctival epithelial flaps occur at higher rates of incidence than those reported with hydrogel contact lenses and might be attributed to the lens' modulus of rigidity and inadequate lens fitting characteristics. (menicon.com)
  • 13 Subsequent generations of SiH contact lenses, manufactured with lower modulus of rigidity and higher water contents, have shown better comfort rates, lower incidences of mechanically-related adverse events, decreased lens surface deposition and increased lens wettabilities compared to first generations of SiH contact lenses. (menicon.com)