Contact lenses hydrophilic. Medical search

Lenses designed to be worn on the front surface of the eyeball. (UMDNS, 1999)

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.

Sterile solutions used to clean and disinfect contact lenses.

Inflammation of the cornea.

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)

Infection of the cornea by an ameboid protozoan which may cause corneal ulceration leading to blindness.

Pieces of glass or other transparent materials used for magnification or increased visual acuity.

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.

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)

The fluid secreted by the lacrimal glands. This fluid moistens the CONJUNCTIVA and CORNEA.

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.

The fitting and adjusting of artificial parts of the body. (From Stedman's, 26th ed)

Apparatus, devices, or supplies intended for one-time or temporary use.

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)

Artificial implanted lenses.

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.

An excessive amount of fluid in the cornea due to damage of the epithelium or endothelium causing decreased visual acuity.

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.

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.

Diseases of the cornea.

A network of cross-linked hydrophilic macromolecules used in biomedical applications.

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)

Hydrophilic contact lenses worn for an extended period or permanently.

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.

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.

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.

The core of the crystalline lens, surrounded by the cortex.

Refraction of LIGHT effected by the media of the EYE.

Rendering pathogens harmless through the use of heat, antiseptics, antibacterial agents, etc.

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.

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)

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.

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.

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.

The presence of an infectious agent on instruments, prostheses, or other inanimate articles.

The normal decreasing elasticity of the crystalline lens that leads to loss of accommodation.

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.

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.

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)

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.

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.

The methyl esters of methacrylic acid that polymerize easily and are used as tissue cements, dental materials, and absorbent for biological substances.

Stratified squamous epithelium that covers the outer surface of the CORNEA. It is smooth and contains many free nerve endings.

Each of the upper and lower folds of SKIN which cover the EYE when closed.

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.

Deviations from the average or standard indices of refraction of the eye through its dioptric or refractive apparatus.

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)

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.

The lamellated connective tissue constituting the thickest layer of the cornea between the Bowman and Descemet membranes.

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.

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.

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)

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.

Sterile solutions that are intended for instillation into the eye. It does not include solutions for cleaning eyeglasses or CONTACT LENS SOLUTIONS.

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.

Diseases affecting the eye.

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)

Single layer of large flattened cells covering the surface of the cornea.

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.

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).

The mucous membrane that covers the posterior surface of the eyelids and the anterior pericorneal surface of the eyeball.

The removal of a cataractous CRYSTALLINE LENS from the eye.

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)

Partial or total replacement of the CORNEA from one human or animal to another.

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.

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.

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)

Methods of creating machines and devices.

Infections with bacteria of the genus SERRATIA.

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.

Presence of an intraocular lens after cataract extraction.

Partial or total replacement of all layers of a central portion of the cornea.

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.

A surgical specialty concerned with the structure and function of the eye and the medical and surgical treatment of its defects and diseases.

Acrylic acids or acrylates which are substituted in the C-2 position with a methyl group.

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)

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.

A species of free-living soil amoebae in the family Acanthamoebidae. It can cause ENCEPHALITIS and KERATITIS in humans.

Agents which are destructive to amebae, especially the parasitic species causing AMEBIASIS in man and animal.

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.

A mitosporic Hypocreales fungal genus, various species of which are important parasitic pathogens of plants and a variety of vertebrates. Teleomorphs include GIBBERELLA.

The sebaceous glands situated on the inner surface of the eyelids between the tarsal plates and CONJUNCTIVA.

Damage or trauma inflicted to the eye by external means. The concept includes both surface injuries and intraocular injuries.

Elements of limited time intervals, contributing to particular results or situations.

Infections with bacteria of the genus PSEUDOMONAS.

Loss of CORNEAL ENDOTHELIUM usually following intraocular surgery (e.g., cataract surgery) or due to FUCHS' ENDOTHELIAL DYSTROPHY; ANGLE-CLOSURE GLAUCOMA; IRITIS; or aging.

Methods and procedures for the diagnosis of diseases of the eye or of vision disorders.

Brief closing of the eyelids by involuntary normal periodic closing, as a protective measure, or by voluntary action.

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.

One or more layers of EPITHELIAL CELLS, supported by the basal lamina, which covers the inner or outer surfaces of the body.

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.

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)

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 ...

https://en.wikipedia.org/wiki/Drahoslav_Lím

Another technique incorporates internal rewetting agents to make the lens surface hydrophilic; 3rd generation (inherently ... the FDA labels non-corrective cosmetic contact lenses as decorative contact lenses. Like any contact lens, cosmetic lenses ... Contact lenses, or simply contacts, are thin lenses placed directly on the surface of the eyes. Contact lenses are ocular ... Augmented reality contact lens Bionic contact lens Effects of long-term contact lens wear on the cornea Eyeglass prescription ...

https://en.wikipedia.org/wiki/Contact_lens

Wichterle thought pHEMA might be a suitable material for contact lenses and gained his first patent for soft contact lenses. In ... 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. "Otto ...

https://en.wikipedia.org/wiki/Otto_Wichterle

"Therapeutic Uses of Hydrophilic Contact Lenses". American Journal of Ophthalmology. 69 (2): 252-9. doi:10.1016/0002-9394(70) ... With Tony Gasset, Kaufman studied therapeutic soft contact lens (SCL) use to promote corneal healing and reduce pain. They also ... He has been president of the Association for Research in Vision and Ophthalmology, the Contact Lens Association of ... co-developed with Tony Gasset the use of bandage contact lenses; and was involved in the first laser vision photorefractive ...

https://en.wikipedia.org/wiki/Herbert_E._Kaufman

Hydrophilic polymers for soft contact lenses. YTEC devised novel homopolymer and copolymer systems for soft contact lens ... to exhibit a high degree of water containment in the swollen state and yet be sufficiently stable to form a precision lens to ...

https://en.wikipedia.org/wiki/Fulmer_Research_Institute

... making it useful as a predictor of a person's tolerance of hydrophilic soft contact lenses. Contact lens intolerance can also ... Ravazzoni L, Ghini C, Macri A, Rolando M (1998). "Forecasting of hydrophilic contact lens tolerance by means of tear ferning ... If cosmesis is a concern, or if there is discomfort in contact lens use, surgical excision may be done. Occasionally, a ... result from the elevation of the peripheral edge of the contact lens if it overlies a pinguecula. The plural form of pinguecula ...

https://en.wikipedia.org/wiki/Pinguecula

Like toric contact lenses, toric IOLs have different powers in different meridians of the lens, and they must be positioned on ... hydrophilic acrylate and collamer. Polymethylmethacrylate (PMMA) was the first material to be used successfully in intraocular ... If the natural lens is left in the eye, the IOL is known as phakic, otherwise it is a pseudophakic, or false lens. Such a lens ... They have special vaulting so as not to be in contact with the normal lens. The main complication with older versions was a ...

https://en.wikipedia.org/wiki/Intraocular_lens

... and these results had great importance for manufacture of soft contact lenses. Polyhydroxyethylmethacrylate is hydrophilic: it ... Because of this property, it was one of the first materials to be used in the manufacture of soft contact lenses. ... Wichterle, O.; Lím, D. (1960). "Hydrophilic gels for biological use". Nature. 185 (4706): 117-118. Bibcode:1960Natur.185..117W ... Lím described its use in synthesis of hydrophilic crosslinked networks, ...

https://en.wikipedia.org/wiki/(Hydroxyethyl)methacrylate

Hydrophilic Silicone Composition and Method Contact lens http://aboutjoints.com/patientinfo/topics/tjrlastfrontier/ ... of pioneering silicone-based contact lenses that became the basis of the oxygen-permeable technology of modern contact lenses. ...

https://en.wikipedia.org/wiki/Edward_Wilson_Merrill

... FOR CONTACTS - For Silicone Hydrogel and Hydrophilic lenses Used primarily for comfort during the day, moistening upon ... These drops are also not advised for contact lens wearers because decreased blood flow to the surface of the eye will further ... If swallowed, get medical help or contact a Poison Control Center right away. "Woman pleads guilty to killing husband by lacing ... blood pressure Possible coma Seizures and tremors Death Anyone ingesting Visine should get medical attention or contact a ...

https://en.wikipedia.org/wiki/Visine

These 'water-loving' soft contact lens materials are categorized as "Conventional Hydrophilic Material Groups ("-filcon"): Note ... "Contact Lens Spectrum - Soft Contact Lenses". www.clspectrum.com. Contact Lens Spectrum. Retrieved 19 Feb 2019. "CooperVision ... There are three generations of silicone hydrogel contact lens materials: "About Contact Lenses - clma.net". clma.net. Contact ... Loretta B. Szczotka-Flynn (February 2005). "Contact Lens Materials: Advocating a New Lens Group". Contact Lens Spectrum. ...

https://en.wikipedia.org/wiki/List_of_soft_contact_lens_materials

Wichterle thought pHEMA might be a suitable material for a contact lens and gained his first patent for soft contact lenses. By ... 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 ... Kyle, Robert A.; Steensma, David P.; Shampo, Marc A. (2016-03-01). "Otto Wichterle-Inventor of the First Soft Contact Lenses". ...

https://en.wikipedia.org/wiki/Polyhydroxyethylmethacrylate

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 ...

https://en.wikipedia.org/wiki/Polymacon

... contact lenses MeSH E07.532.276.360 - contact lenses, hydrophilic MeSH E07.532.276.360.220 - contact lenses, extended-wear MeSH ... lenses, intraocular MeSH E07.695.510 - maxillofacial prosthesis MeSH E07.695.510.500 - mandibular prosthesis MeSH E07.695.540 ... E07.532.300 - eyeglasses MeSH E07.532.460 - lenses, intraocular MeSH E07.565.500 - quantum dots MeSH E07.605.500 - metered dose ...

https://en.wikipedia.org/wiki/List_of_MeSH_codes_(E07)

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. Modern furniture ... 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 ...

https://en.wikipedia.org/wiki/Poly(methyl_methacrylate)

Hybrid Contact Lens Management. Contact Lens Spectrum: "Contact Lens Spectrum". 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 ... As the disease progresses, special contact lenses (such as scleral contact lenses) may be required. In most people the disease ... Contact Lens & Anterior Eye: The Journal of the British Contact Lens Association. 33 (4): 157-166, quiz 205. doi:10.1016/j.clae ...

https://en.wikipedia.org/wiki/Keratoconus

From Soft Contact Lenses and Implants to Self-Assembled Nanomaterials". Journal of Polymer Science Part A: Polymer Chemistry 47 ... 6. Hydrophilic Gels Cleavable by Chymotrypsin". Biomaterials 3, 150-154 (1982) J. Kopeček, P. Rejmanová, V. Chytrý, "Polymers ... who invented hydrogels and created soft contact lenses. Kopeček received an honorary Ph.D. from the University of Helsinki in ... studies in Prague laboratory Kopeček's graduate research focused on the kinetics of crosslinking polymerization of hydrophilic ...

https://en.wikipedia.org/wiki/Jindřich_Kopeček

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 research ongoing for using poloxamer 407 for aligning severed ... is a triblock copolymer consisting of a central hydrophobic block of polypropylene glycol flanked by two hydrophilic blocks of ...

https://en.wikipedia.org/wiki/Poloxamer_407

... monomer is differentially downregulated in mild to severe aqueous deficient dry eye, and in contact lens-related dry ... The most C-terminal alpha helix is amphipathic with hydrophobic and hydrophilic residues on opposite faces. The hydrophobic ... A growing number of studies suggest that lacritin may be differentially downregulated in dry eye, including contact lens- ... Nichols JJ, Green-Church KB (December 2009). "Mass spectrometry-based proteomic analyses in contact lens-related dry eye". ...

https://en.wikipedia.org/wiki/Lacritin

"A polymer-based technique to remove pollutants from soft contact lenses". Contact Lens and Anterior Eye. 44 (3): 101335. arXiv: ... This treatment renders the PDMS surface hydrophilic, allowing water to wet it. The oxidized surface can be further ... The use of PDMS in the manufacture of contact lenses was patented (later abandoned).< PDMS is used variously in the cosmetic ... A proposed use of PDMS is contact lens cleaning. Its physical properties of low elastic modulus and hydrophobicity have been ...

https://en.wikipedia.org/wiki/Polydimethylsiloxane

Avoiding the use of benzalkonium chloride solutions while contact lenses are in place is discussed in the literature. Due to ... The diagram[which?] represents suggested pathways of the biodegradation of BAC for both the hydrophobic and the hydrophilic ... Polyaminopropyl biguanide - an alternative preservative for contact lens solutions Ethylenediaminetetraacetic acid Triclosan - ... Contact Lens". Clinical and Experimental Optometry. 59 (8): 277. doi:10.1111/j.1444-0938.1976.tb01445.x. M Akers, " ...

https://en.wikipedia.org/wiki/Benzalkonium_chloride

Hydrogels, such as soft contact lenses for example, are likewise inaccessible for the standard arrangement; the captive bubble ... can further lead to the investigation in the hydrophilic and hydrophobic properties of the surface. Through studies, a higher ... the observed contact angle usually underestimated the intrinsic contact angle, while the observed contact angle in the captive ... Theoretically, the contact angle equals to the value of the local intrinsic contact angle with the assumption of a negligible ...

https://en.wikipedia.org/wiki/Captive_bubble_method

Soft, opaque contact lenses may be used to improve cosmesis and reduce the perception of double vision. Iridodialyses are ... 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 ...

https://en.wikipedia.org/wiki/Iridodialysis

Contact Lens. 36 (3): 170-176. doi:10.1097/ICL.0b013e3181db352f. PMID 20351555. S2CID 1751728. Weiner, Myra L.; Lois A. ... HPC has a combination of hydrophobic and hydrophilic groups, so it has a lower critical solution temperature (LCST) at 45 °C. ...

https://en.wikipedia.org/wiki/Hydroxypropyl_cellulose

SGG Aquaclean (1st generation, hydrophilic only, 2002) and Bioclean (2nd generation, both photoactive and hydrophilic, 2003) by ... When the glass is wet by rain or other water, hydrophilicity reduces contact angles to very low values, causing the water to ... precluding applications on lenses and windows, and fragile materials. The second class of self-cleaning surfaces are ... Hydrophilic coatings based on titania (titanium dioxide), however, have an additional property: they can chemically break down ...

https://en.wikipedia.org/wiki/Self-cleaning_glass

The dominant material for contact lenses are acrylate-siloxane hydrogels. They have replaced hard contact lenses. One of their ... A hydrogel is a crosslinked hydrophilic polymer that does not dissolve in water. They are highly absorbent yet maintain well ... Breast implants Contact lenses (silicone hydrogels, polyacrylamides, polymacon) Disposable diapers where they absorb urine, or ... Lai YC, Wilson AC, Zantos SG (2000). "Contact Lenses". Kirk‐Othmer Encyclopedia of Chemical Technology. John Wiley & Sons, Inc ...

https://en.wikipedia.org/wiki/Hydrogel

Some proteins naturally form crystalline arrays, like aquaporin in the lens of the eye. In the process of protein ... The two solutions come into contact in a reagent chamber, both at their maximum concentrations, initiating spontaneous ... in which the hydrophilic groups are usually facing outwards to the solution to form a hydration shell to the solvent (water). ... crystallization is the process of formation of a regular array of individual protein molecules stabilized by crystal contacts. ...

https://en.wikipedia.org/wiki/Protein_crystallization

August 2019). "Recovering vision in corneal epithelial stem cell deficient eyes". Contact Lens & Anterior Eye. 42 (4): 350-358 ... The swelling capacity of mucus stems from the bottlebrush structure of mucin within which hydrophilic segments provide a large ...

https://en.wikipedia.org/wiki/Mucus

A nonporous hydrophilic membrane is used. Only charged species can enter the nano-sized pores of the membrane. Non-polar ... If water vapor is generated at very high temperatures, it must be cooled before coming in contact with the furnace and wafers. ... Immersion lithography places a layer of pure water between the projection lens and the wafer. Any contaminant within the water ... The water quality becomes a living history of contact with all piping materials as well as gases used for bubbling. The ...

https://en.wikipedia.org/wiki/Ultra-high-purity_steam_for_oxidation_and_annealing

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 ... In Salt Lake City during the 1980s, Apple started to study intraocular lenses (IOLs), including those explanted lenses which ... Evolution of Intraocular Lenses in 1985 and Intraocular Lenses. Evolution, Designs, Complications, and Pathology in 1989. Dr. ...

https://en.wikipedia.org/wiki/David_J._Apple

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 the commonly used term deionized (DI) water are not the same. In ... The ultrapure water is by definition extremely low in contamination, but once it makes contact with the wafer surface it ...

https://en.wikipedia.org/wiki/Ultrapure_water

Attachment systems in these organisms have similar structures at their terminal elements of contact, known as setae. Such ... Surface tension biomimetics are being researched for technologies such as hydrophobic or hydrophilic coatings and ... significantly reducing lens flare. This imitates the structure of a moth's eye. Notable figures such as the Wright Brothers and ...

https://en.wikipedia.org/wiki/Biomimetics

"Bacillus cereus keratitis associated with contact lens wear". Ophthalmology. 108 (10): 1830-1834. doi:10.1016/S0161-6420(01) ... thus creating pores with hydrophilic interiors. The effect is loss of cellular membrane potential and eventually cell death. ...

https://en.wikipedia.org/wiki/Bacillus_cereus

A simple microscope is a microscope with only one biconvex lens, rather like a magnifying glass). He saw many small box like ... The DNA of a prokaryotic cell consists of a single circular chromosome that is in direct contact with the cytoplasm. The ... 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 ...

https://en.wikipedia.org/wiki/Cell_(biology)

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, ...

https://en.wikipedia.org/wiki/Lactylate

Grilli S, Miccio L, Vespini V, Finizio A, De Nicola S, Ferraro P (May 2008). "Liquid micro-lens array activated by selective ... 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 to eject droplets as small as a ...

https://en.wikipedia.org/wiki/Microfluidics

Purpose: To evaluate the binocular and accommodative function in children wearing dual focus (DF) MiSight® contact lenses (CLs ... Conclusions: DF lenses do not change the binocular and accommodative function in children wearing dual focus CLs. ...

https://pubmed.ncbi.nlm.nih.gov/30196481/

Categories: Contact Lenses, Hydrophilic Image Types: Photo, Illustrations, Video, Color, Black&White, PublicDomain, ...

https://phil.cdc.gov/AdvancedSearchResults.aspx?Search=Contact+Lenses,+Hydrophilic&parentid=7019&catid=7021

Buy from a wide range of disposable contact lens online. ... Lens Hydrophilic Intraocular Lens Hydrophobic Intraocular Lens ... Find disposable contact lens manufacturers, suppliers, dealers & latest prices from top companies in India. ... colored Crazy One Day Lenses Horror Contact Lenses. INR 85.0. Bio 55 Advance Monthly Disposable Soft Contact Lenses. INR& ... 24h Daily Disposable Contact Lens - 30 Lens Pack (-0.50 To -9.00 By Dealskart Online Services Pvt. Ltd.. Get latest price. ...

https://www.tradeindia.com/manufacturers/disposable-contact-lens.html

... contact lenses offer an easy, virtually invisible solution. Learn how contact lenses correct sight, look at the variety of lens ... Soft lenses are hydrophilic, or "water loving," and absorb water. This allows oxygen to flow to the eye and makes the lens ... contact lenses. Several different types of soft contact lenses are available: * Daily-wear lenses - You remove these each night ... Inventing the Contact Lens Photo courtesy Proclear Encyclopaedia. Leonardo da Vinci. Contact lenses might seem like a modern ...

https://health.howstuffworks.com/wellness/cosmetic-treatments/contact-lens.htm

Antimicrobial contact lenses and lens cases: A review. Dutta, D. & Willcox, M. D. P., 1 Sep 2014, In: Eye and Contact Lens. 40 ... how to predict contact lens success. Wolffsohn, J. S., Apr 2014, In: Contact Lens and Anterior Eye. 37, 2, p. 63-64 2 p.. ... Bilkhu, P. S., Wolffsohn, J. S., Tang, G. W. & Naroo, S. A., Oct 2014, In: Contact Lens and Anterior Eye. 37, 5, p. 382-387 6 p ... Dhallu, S. K., Sheppard, A. L. & Wolffsohn, J. S., Jun 2014, In: Contact Lens and Anterior Eye. 37, 3, p. 191-195 5 p.. ...

https://research.aston.ac.uk/en/organisations/optometry/publications/?ordering=publicationYearThenTitle&descending=true&page=10

... soft contact lense, hard contact lense, semisoft contact lense, colored contact lense, coloured contact lense. ... optical lenses suppliers and optical lenses exporters. Get details of manufacturers & exporters of optical lenses, optical ...

https://dir.indiamart.com/indianexporters/optical-lenses.html

Those who wear contact lenses, especially extended-wear hydrophilic lenses The common feature among the 3 groups is a defect in ... Contact lens trauma. Contact lens-induced epithelial defects or direct trauma during lens insertion or removal can cause ... and contact lens wear (eg, daily disposable soft lenses, extended-wear soft lenses, gas-permeable lenses, hard ... After the contact lens is removed, the patient may feel discomfort; however, no pain occurs when the lens is worn because it ...

https://www.medscape.com/answers/1195402-68247/how-is-the-diagnosis-of-corneal-abrasion-confirmed

Contact from your local Rayner representative. I am happy for my contact details to be shared with my local Rayner ... Prospective, non-randomised, long term clinical evaluation of a foldable hydrophilic single piece intraocular lens: results of ... long term clinical evaluation of a foldable hydrophilic single piece intraocular lens: results of the Centerflex FDA study ... Contact us. Global HQ & UK Office:. Rayner. The Ridley Innovation Centre. 10 Dominion Way. Worthing. West Sussex. BN14 8AQ. ...

https://rayner.com/eye_science/prospective-non-randomised-long-term-clinical-evaluation-of-a-foldable-hydrophilic-single-piece-intraocular-lens-results-of-the-centerflex-fda-study/

Have you ever worn a contact lens? Hydrogel. Changed a baby diaper and wondered how it held the liquid in? Yep, you guessed it ... Hydrogels are three-dimensional materials that are hydrophilic, or water loving. Fully swollen hydrogels typically contain more ...

https://www.livescience.com/28307-hydrogels-biocompatability-nsf-bts.html

... on hydrophilic soft contact lenses: I. Comparison to visual methods of analysis. II. Deposit variation among FDA lens material ... Int Contact Lens Clin 1981: 19-26.. 19. Grobe GL, 3rd: Surface engineering aspects of silicone-hydrogel lenses. Contact Lens ... Kunzler J: Silicone-based hydrogels for contact lens applications. Contact Lens Spectrum 1999; 14: 9 - 11.. 16. Dumbleton K: ... hydrophobic contact lenses. Biomaterials 2001; 22: 3217-24.. 47. Jones L, Long J, Chen P: The impact of contact lens care ...

http://www.siliconehydrogels.org/editorials/previous_editorial_jones_senchyna.asp

Hydrophilic) Contact Lenses, Pegavision (Etafilcon A) Color Soft (Hydrophilic) Contact Lenses Pegavision Corporation 510(k) NO ... Hydrophilic) Contact Lenses (59% Water) Plexus Optix, Inc. 510(k) NO: K201268(Traditional) ATTN: Dave Delle Donne PHONE NO : ... Contact FDA Follow FDA on Facebook Follow FDA on Twitter Follow FDA on Instagram View FDA videos on YouTube Subscribe to FDA ... xPORT S Lens Fragmentation System Carl Zeiss Meditec Cataract Techno510(k) NO: K200207(Traditional) ATTN: Gary Mocnik PHONE NO ...

https://www.fda.gov/medical-devices/510k-clearances/october-2020-510k-clearances

... since World War II when it negotiated a license to make and sell contact lenses made from a fluid-absorbing hydrophilic plastic ... In 1986 the firm agreed to a joint venture with Beijing Contact Lens Ltd. to produce contact lenses and solutions in China. ... The company hoped soft contact lenses would garner a huge share of the contact lens market. Bausch & Lomb encountered a few ... had eaten into both B&Ls sales of traditional contact lenses and its sales of contact lens solutions, which are not needed by ...

http://www.fundinguniverse.com/company-histories/bausch-lomb-inc-history/

Lenses 72% * Macular Pigment 59% * Hydrophilic Contact Lens 26% 9 Citations (Scopus) ... Investigation of simulated lens yellowing, opacification and refractive error on Resonance Raman Spectroscopy. Anderson, RS., ... Introduction of a Toric Intraocular Lens to a Non-Refractive Cataract Practice: Challenges and Outcomes. Kirwan, C., Nolan, J. ... Investigation of the effect of simulated lens yellowing, transparency loss and refractive error on in vivo resonance Raman ...

https://pure.ulster.ac.uk/en/organisations/school-of-biomedical-sciences/publications/?type=%2Fdk%2Fatira%2Fpure%2Fresearchoutput%2Fresearchoutputtypes%2Fcontributiontojournal%2Farticle&type=%2Fdk%2Fatira%2Fpure%2Fresearchoutput%2Fresearchoutputtypes%2Fcontributiontoperiodical%2Farticle&ordering=title&descending=false&page=34

G02B1/043 - {Contact lenses}. C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08L - COMPOSITIONS OF MACROMOLECULAR ... Hydrogels containing acrylamide-functionalized carbohydrate, sulfoxide, sulfide or sulfone copolymerized with a hydrophilic or ... The method of use of the new hydrogels for fabrication of soft contact lenses and biomedical implants.},. doi = {},. journal ... The method of use of the new hydrogels for fabrication of soft contact lenses and biomedical implants. ...

https://www.osti.gov/doepatents/biblio/879652

... contact lens manufacturing ; Phase separation ; Surface segregation ; Wettability ; Clinical study ; Environmental scanning ... electron microscopy ; Contact angle ; Time-of-flight Mass spectrometry ; X-ray photoelectron spe ... of silicone polymer components and lower concentration of hydrophilic polymer components at the surface of the air-cured lens, ... Contact lens ; Silicone hydrogel ; contact lens manufacturing ; Phase separation ; Surface segregation ; Wettability ; Clinical ...

https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.538514

... and hydrophilic formulations to improve permeability as well as large viscous formulations and well as soft contact lenses and ... Contact lenses soaked with nanoparticle drugs are of special interest due to the long length of daily wear by the patient. ... Nanoparticles are also used successfully in combination with contact lenses and viscous agents to increase retention time at ... The back of the eye refers to the space from the lens to the retina and is treated by injections into the vitreous space. ...

https://globalrph.com/2021/01/use-of-nanotechnology-to-deliver-topical-ophthalmic-medications/

Contact Lens, Hydrophilic Contact Lens, Soft Contact Lenses, Soft Hydrophilic Contact Lens Hydrophilic Contact Lenses Lens, ... Contact Lens, Hydrophilic. Contact Lens, Soft. Contact Lenses, Soft. Hydrophilic Contact Lens. Hydrophilic Contact Lenses. Lens ... Lens, Soft Contact Lenses, Contact, Hydrophilic Lenses, Hydrophilic Contact Lenses, Soft Contact Soft Contact Lens Soft Contact ... Lenses, Contact, Hydrophilic. Lenses, Hydrophilic Contact. Lenses, Soft Contact. Soft Contact Lens. Soft Contact Lenses. ...

https://decs.bvsalud.org/en/ths/resource/?id=3282

Innovative EautraSil™ Hydrophilic Silicone Technology II. All-Day Total Comfort Contact Lens by Miacare. Miacares world- ... Miacare contact lens is designed using the exclusive dot matrix pattern that blends naturally with your eye colour while ... Hydrophilic Film & Smaller Wetting Angle. The lenses have a softer texture ensuring your eyes stay comfortable throughout.. ... Enhances the lens softness for better eye comfort.. Contains 47% Water Content & Double Moisturizing Agents (Hydrophilic Acid ...

https://www.miacare.com/weben/html/product/show.aspx?num=41&root=1

Therapeutic applications of hydrophilic soft contact lenses.. Mehta, K R; Sathe, S N; Karyekar, S D; Dave, S. ...

https://imsear.searo.who.int/handle/123456789/69529/simple-search?query=&sort_by=score&order=desc&rpp=10&filter_field_1=subject&filter_type_1=equals&filter_value_1=Adolescent&filter_field_2=dateIssued&filter_type_2=equals&filter_value_2=%5B1971+TO+1979%5D&filter_field_3=dateIssued&filter_type_3=equals&filter_value_3=1975&etal=0&filtername=author&filterquery=Dave%2C+S&filtertype=equals

Contact Lenses, Hydrophilic; Drug Delivery Systems; Ophthalmology ... Lactoferrin-loaded contact lenses: Eye protection against oxidative stress. PASTORI, VALENTINA. ;TAVAZZI, SILVIA. Secondo. ; ... LF released from contact lenses maintained its antioxidant activity at least for 24 hours and was able to protect human ... LF released from contact lenses maintained its antioxidant activity at least for 24 hours and was able to protect human ...

https://boa.unimib.it/handle/10281/98131

Development of uv-curable, hydrophilic gel networks for soft contact lens manufacture. McGrath, S., Coffey, A. B., Walsh, P. R. ... Development of contact lenses for ocular drug delivery. Phelan, D., Fitzhenry, L., Coffey, A. & McLoughlin, P., 2013, Society ...

https://research.wit.ie/en/persons/austin-coffey/publications/?ordering=publicationYearThenTitle&descending=true

Although pseudomonal eye infections are often associated with hydrophilic contact lens wear, infections have also been reported ... Eye infections: Contact lens wearers have an increased risk of developing gram-negative infections, including pseudomonal ... Tabbara KF, El-Sheikh HF, Aabed B. Extended wear contact lens related bacterial keratitis. Br J Ophthalmol. 2000 Mar. 84(3):327 ... Severe sclerokeratitis due to Pseudomonas aeruginosa in noncontact-lens wearers. Eye. 2000 Feb. 14 (Pt 1):3-7. [QxMD MEDLINE ...

https://www.staging.medscape.com/answers/970904-31317/what-is-the-clinical-presentation-of-pseudomonas-bacteremia-and-sepsis

https://emedicine.staging.medscape.com/article/970904-clinical

The perfect contact lens for the digital world. ... Hydrophilic coating Packaging: 6 pcs per box Lens type: Anti ... We offer more than 700 types of clear, circle lenses or colored contact lenses to meet your OOTD. No matter it is an official ... Type: Anti Blue Light Contact Lenses. Type: Monthly Disposable. Manufactured by: ColourVUE. $AVE MORE @ DI$COUNTED PRICE. Buy. ... Blue Light Contact Lenses Lens type: Monthly Disposable. Are you one of the people that spend a long time on digital devices? ...

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Buy Proclear Sphere monthly disposable contact lenses at unbeatable prices with Fast India delivery from No 1 trusted online ... Hydrophilic technology of added moisture. Proclear Sphere Product Description Proclear® contact lenses stay moist and ... The diameter of the lens. Most brands come in a couple of sizes. Usually a 14.x number but could be between 13.x to 15.x. ... Unlike some lenses that can leave eyes feeling dry, irritated or even blur your vision after a prolonged period of time. These ...

https://www.feelgoodcontacts.in/proclear-sphere

ALTIUS Grey-Green performance sport contact lens is engineered for open air sports and recreational activities, on-water and on ... Single-Use soft (hydrophilic) contact lens. *Ocufilcon D (55% water). *BC: 8.7 ... These soft sports contact lenses are designed to aid visual performance by enhancing contrast and enabling the wearer to see ... ALTIUS® GREY-GREEN blue blocking sports soft contact lenses performance attributes:. *Engineered for open-air sports and ...

https://altiusvision.com/performance-contact-lens-grey-green/

For all soft and RGP contact lenses. Free lens case included. For more information regarding this product, consult your eye ... hydrophilic) and rigid gas permeable lenses as recommended by your eye care professional. Clear Care solution has the cleaning ... For all soft and RGP contact lenses. Free lens case included. For more information regarding this product, consult your eye ... Pluronic 17R4: For clean, comfortable lenses. Built-in cleaner. Cleans soft contact lenses without rubbing. Made in USA. ...

https://www.cub.com/sm/pickup/rsid/1644/product/clear-care-cleaning-&-disinfecting-solution-triple-action-cleaning-twin-pack-00047113609027

The PuriLens contact lens system is indicated for cleaning and disinfection of soft (hydrophilic) contact lenses by means of ... The PuriLens contact lens system is indicated for cleaning and disinfection of soft (hydrophilic) contact lenses by means of ... The PuriLens contact lens system is indicated for cleaning and disinfection of soft (hydrophilic) contact lenses by means of ... The PuriLens contact lens system is indicated for cleaning and disinfection of soft (hydrophilic) contact lenses by means of ...

https://ohsu.pure.elsevier.com/en/publications/disinfection-capacity-of-purilens-contact-lens-cleaning-unit-agai-2

Silicone-hydrogel contact lens materials represent a new family of biomaterials, whose properties are unlike any other previously developed for contact lens use. (siliconehydrogels.org)
The incorporation of siloxane groups into the base hydrogel material has produced materials that have substantially improved oxygen transmission characteristics compared with conventional soft contact lens materials 1-3 and the results from clinical studies conducted to-date indicate that the number of physiological complications induced by the overnight use of such materials is significantly less than that seen with conventional materials. (siliconehydrogels.org)
Detailed explanations of the development of silicone hydrogel materials for contact lenses and their polymer chemistry have been described in detail elsewhere. (siliconehydrogels.org)
18 To overcome this, the surfaces of the two commercially available silicone-hydrogel lenses are surface treated, 2 , 13 , 19 , 20 in an attempt to improve the wettability of the materials and to reduce the degree of deposition that would occur on non-treated materials. (siliconehydrogels.org)
Information concerning the degree of protein and lipid deposition that occurs on silicone-hydrogel lens materials is of significant clinical importance, as these lenses are intended for in-eye use for up to 30 days without removal. (siliconehydrogels.org)
Results from our group 41 , 42 and others 43 - 45 indicate that the amount of lysozymedeposited on silicone-hydrogel lens materials is significantly less than that seen on group IV traditional contact lens materials. (siliconehydrogels.org)
This PhD project investigated the ramifications of air-cured and nitrogen-cured manufacturing processes during silicone hydrogel contact lens manufacture in terms of lens surface characterisation and clinical performance. (bl.uk)
Scanning electron microscope (SEM) imaging showed the nitrogen-cured lens to have a surface typical of a hydrogel material, whereas the air-cured lens had regions of apparent phase separation. (bl.uk)
Product Performance Evaluation of a Novel Silicone Hydrogel Contact Lens: kalifilcon A Daily Disposable Contact Lenses - Summary of kalifilcon A Patient Comfort and Vision Outcomes. (ultraoneday.be)
A clinical assessment of dehydration resistance for a novel silicone hydrogel lens and six silicone hydrogel daily disposable lenses. (ultraoneday.be)
7. Results of a consumer symptoms survey of 318 silicone hydrogel daily disposable contact lens wearers. (ultraoneday.be)
Air Optix Night & Day AquaAlcon monthly disposable silicone hydrogel sphere contact lenses ALCON AIR OPTIX NIGHT & DAY AQUA is the first pair. (eeconshop.com)
The lenses are made of high-permeable silicon hydrogel and hydrophilic materials containing PEG lubricating molecules, which greatly increase the breathing capacity of the eyes, keep your eyes moisturized and comfortable throughout the day and reduce redness. (eeconshop.com)
Aurora Clear contact lenses are monthly silicone hydrogel contact lenses made for monthly wear. (mylens.ca)
Enjoy a comfortable wearing experience thanks to the hydrophilic hydrogel layer. (mylens.ca)
They feature a hydrophilic hydrogel layer, which helps provide a healthier and more comfortable wearing experience. (mylens.ca)
Newer generation contact lens solution surfactants are custom designed specifically to interact with hydrophobic silicone to create a more comfortable and long lasting wettable silicone hydrogel experience. (reviewofcontactlenses.com)
Interestingly, a recent Australian study evaluated the comfort of PureVision contacts versus hydrogel contacts over one year. (contactlenses.it)
Patients will still enjoy the benefits of a hydrophilic surface, breathable silicone hydrogel, and AerGel Technology. (contactlenses.it)
Two presentations of contact lens-induced papillary conjunctivitis (CLPC) in hydrogel lens wear: local and general. (medscape.com)
Santodomingo-Rubido J, Wolffsohn JS, Gilmartin B. Adverse events and discontinuations during 18 months of silicone hydrogel contact lens wear. (medscape.com)
Tagliaferri A, Love TE, Szczotka-Flynn LB. Risk factors for contact lens-induced papillary conjunctivitis associated with silicone hydrogel contact lens wear. (medscape.com)

We are one of the top quality exporter of Acrylic Foldable Intraocular Lens available in Ahmedabad. (connect2india.com)

17 These lenses offer exceptional oxygen transmission, but the migration of siloxane moieties to the material surface results in the production of extremely hydrophobic surfaces, resulting in marked lipid deposition. (siliconehydrogels.org)
Surfactants are composed of both hydrophilic and hydrophobic ends in the molecule structure. (reviewofcontactlenses.com)
In the case of a surfactant wetting agent, the hydrophobic end interacts with the dry hydrophobic lens surface, allowing the lens surface to regain hydrophilicity, as well as lubricity. (reviewofcontactlenses.com)
The most common materials used in IOL implant manufacturing today, include silicone, hydrophobic acrylics, hydrophilic acrylics, and polymethylmethacrylate (PMMA). (magruderlaservision.com)

Soft hydrophilic ("water loving") contact lenses are the most popular lens of contact wearers. (anewvisioninc.com)
It is normal for the new wearers to experience mild symptoms such as lens awareness, variable vision, occasional tearing (watery eyes) and slight eye redness during the adaptation period. (mackeyopticians.com)
New contact lens wearers may wish to increase their wearing time slowly over the first week as they adapt to handling and wearing lenses. (mackeyopticians.com)
Giant papillary conjunctivitis in frequent-replacement contact lens wearers: a retrospective study. (medscape.com)
Giant papillary conjunctivitis in contact lens wearers. (medscape.com)

Hydrophilic Film and Reduced Wetting Angle- The lenses offer a softer feel, which keeps your eyes comfortable throughout. (malayaoptical.com)

Miacare's world-leading EautraSil™ Hydrophilic Silicone Technology II transforms the conventional silicone molecules into hydrophilic structures without using any solvent treatment to form a hydrophilic film. (miacare.com)
This allows for a higher oxygen transmissibility as more oxygen molecules penetrate the lens to reach the cornea - resulting in a healthier, safer and ultra-comfortable experience for your eyes. (miacare.com)
Hydrophilic molecules on the surface of the lens form a layer of moisture to reduce dryness. (o-lola.com)
Miacare's industry-leading EautraSil™ Hydrophilic Silicone Technology II turns typical silicone molecules into hydrophilic structures without need for a solvent to create a hydrophilic layer. (malayaoptical.com)
This mould is then filled with a monomer (a molecule that can be bonded to other identical molecules to form a polymer) and is then closed and cured before the lens is then hydrated and packed. (cleanroomtechnology.com)

Color Toric Lens Gray is one of the best quarterly disposable lenses that provide whole day comfort with an ultra-thin edge. (tradeindia.com)
Whereas lenses used to correct myopia and hyperopia are spherical (the power correction is the same throughout the lens) astigmatism requires a special lens, called a toric lens . (howstuffworks.com)
The toric lens options have improved in the past few years, and with more options, more individuals are successfully fitted with toric lenses. (anewvisioninc.com)

Alcon's Dailies Total 1 was the first and only water gradient contact lens manufactured, with a silicone core, sandwiched between an outer and inner layer of an ultrasoft hydrophilic surface. (jeangalea.com)
The ultrasoft, hydrophilic surface gel is designed to offer exceptional lubricity. (contactscompare.com)

Contains 47 percent water content and double moisturizing agents (Hydrophilic Acid and Sodium Alginate) for maximum hydration and a comfortable wearing feel all day. (malayaoptical.com)

Boston One Step Liquid Enzymatic Cleaner Effectively removes protein deposits from rigid gas permeable contact lenses. (abebox.com)
Effectively removes protein deposits from rigid gas permeable contact lenses. (abebox.com)
For rigid gas permeable contact lenses. (otcsuperstore.com)
For Silicone Acrylate and Fluorosilicone Acrylate Rigid Gas Permeable Contact Lenses. (dryeyenest.com)

2.Highly Hydrophilic: The main component of the lens is HEMA+NVP, which has a hydrophilic effect on the lens and increases the water content of the lens, and it is soft and comfortable to wear. (colourfuleye.com)

Examples include corneal or epithelial disease (eg, dry eye ), superficial corneal injury or ocular injuries (eg, those due to foreign bodies ), exposure to ultraviolet light, and contact lens wear (eg, daily disposable soft lenses, extended-wear soft lenses, gas-permeable lenses, hard polymethylmethacrylate lenses). (medscape.com)
Conclusions: These results demonstrate that LF-loaded contact lenses could represent a new therapeutic approach to treat ocular surface pathologies characterized by high levels of oxidative stress. (unimib.it)
Bausch + Lomb ULTRA® ONE DAY contact lenses deliver health through its complete system working together to support a healthy ocular environment, the inclusion of eye health ingredients which are retained over 16 hours and the high allowance of oxygen permeability (Dk/t=134). (ultraoneday.be)
4. Rah M. Ocular surface homeostasis and contact lens design. (ultraoneday.be)

Clear Care cleaning & disinfecting solution is convenient and highly effective hydrogen peroxide based system for simultaneous cleaning, daily protein removal, and disinfecting of soft (hydrophilic) and rigid gas permeable lenses as recommended by your eye care professional. (cub.com)
It is a sterile, buffered isotonic saline solution that can be used to rinse soft and gas permeable lenses. (dryeyeshop.com)

To evaluate the binocular and accommodative function in children wearing dual focus (DF) MiSight® contact lenses (CLs) for myopia control compared with children wearing single-vision (SV) spectacles. (nih.gov)
To correct myopia, the contact lens is thinner at the center than at the edges. (howstuffworks.com)
The world's first soft contact lens proven to significantly slow the progression of myopia in children, lowering the risk of myopia-related conditions later in life. (mackeyopticians.com)
Patient hygiene and ability to follow practitioner instructions are essential to the success of wearing the lenses and slowing myopia. (mackeyopticians.com)

The PuriLens contact lens system is indicated for cleaning and disinfection of soft (hydrophilic) contact lenses by means of subsonic agitation to remove lens deposits and microorganisms, and ultraviolet irradiation of the storage solution for disinfection. (elsevier.com)
Acanthamoeba cysts, however, can survive in the solution or contact lens bath undergoing integrated subsonic debridement and indirect ultraviolet light disinfection. (elsevier.com)
Original Formula Boston Cleanser removes debris and deposits from your lenses, leaving your lenses clean, clear and ready for your disinfection step. (otcsuperstore.com)
preservative free saline solution is a sterile, preservative-free solution indicated for use following proper lens disinfection as recommended by the eye care practitioner. (dryeyeshop.com)

Rub and rinse prior to lens wear. (coycooing.com)
Rinse lenses with Menicon Unique pH Multi-Purpose Solution. (dryeyenest.com)
Scleralfil (and also Nutrifill, which comes in the same size) is ample for me to rinse and fill both lenses each morning. (dryeyeshop.com)

Bausch & Lomb Inc. is the United States' leading ophthalmic goods firm and stands as one of the premiere contact lens manufacturers in the world. (fundinguniverse.com)
In 1890 Edward Bausch contacted Carl Zeiss, a German optics firm, and soon arranged for Bausch & Lomb to license Zeiss's patents, with the exclusive rights to the U.S. market. (fundinguniverse.com)
Because of the war, Bausch & Lomb became the major U.S. supplier of scientific precision glass, from which the lenses used by the military were ground. (fundinguniverse.com)
Bausch & Lomb made 28 percent of U.S. eyeglass lenses and a large percentage of the country's microscopes and binoculars. (fundinguniverse.com)
1. Only Bausch + Lomb ULTRA® ONE DAY contact lenses offer a complete moisture + comfort system with Advanced MoistureSeal® and ComfortFeel Technologies plus a complete design of high Dk/t, low modulus, UV blocking and High Definition™ Optics. (ultraoneday.be)
Bausch + Lomb (kalifilcon A) Soft (hydrophilic) Contact Lens. (ultraoneday.be)
Of all Bausch + Lomb's products, PureVision remains one of the company's best-selling monthly disposable contact lenses. (contactlenses.it)
PureVision is a soft contact lens brand manufactured by the American company Bausch + Lomb. (contactlenses.it)
Bausch + Lomb was also one of the first companies to bring soft contacts to the global market. (contactlenses.it)
Scientists at Bausch + Lomb claim this treatment creates a naturally absorbent surface, which increases each lenses' water content. (contactlenses.it)
Bausch + Lomb created this novel contact lens design primarily to help combat the effects of increased time staring at electronic devices. (contactlenses.it)
From Bausch + Lomb Specialty Vision lens care products, ScleralFil-indicated as a scleral insertion solution-is an alternative for rinsing and inserting scleral lenses. (dryeyeshop.com)

We also added hydrophilic rubber contact pads at the nose and ears so they won't slip when things get wet or sweaty. (cab9eyewear.com)
Vented lenses improve airflow while the adjustable ear and nose pads of hydrophilic rubber increase grip as you sweat ensuring a perfect, stable fit. (fwoutfitters.com)

To correct astigmatism, the lens is designed specifically to the individual's correction needs. (howstuffworks.com)
Soft toric lenses are available for individuals needing lenses to correct astigmatism. (anewvisioninc.com)

Contact lenses stay in place by sticking to the layer of tear fluid that floats on the surface of the eye. (howstuffworks.com)
The surfaces of Focus Night & Day (lotrafilcon) lenses are permanently modified in a gas plasma reactive chamber to create a permanent, ultrathin (25nm), high refractive index, continuous hydrophilic surface. (siliconehydrogels.org)
13 , 21 PureVision (balafilcon) lenses are surface treated in a gas plasma reactive chamber which transforms the silicone components on the surface of the lenses into hydrophilic silicate compounds. (siliconehydrogels.org)
Notable amongst these are material water content, 29 , 30 surface charge, 29 , 31 , 32 wearing period 33 and age of the lens material. (siliconehydrogels.org)
Chemical analysis of the study lens surfaces in the dehydrated state, by x-ray photoelectron spectroscopy (XPS) and time-of-flight mass spectrometry (ToF-SIMS), showed no difference due to surface segregation of the silicone components. (bl.uk)
Analysis of frozen lenses limited surface segregation and showed a higher concentration of silicone polymer components and lower concentration of hydrophilic polymer components at the surface of the air-cured lens, in comparison with the nitrogen-cured lens. (bl.uk)
In addition, atomic force microscopy (AFM) showed the air-cured lens to have a rougher surface associated with greater adherence of contaminants (often observed in materials with reduced polymer cross-linking). (bl.uk)
Surface analysis suggested that the non-wetting regions on the air-cured lenses were associated with elevated level of silicone components, reduced polymer cross-linking and polymer phase separation. (bl.uk)
The unique PC™ technology uses a material that attracts and holds water to the lens surface, so it feels more comfortable and functions better. (feelgoodcontacts.in)
Before you put your contact lens into anything, even the case, make sure that the surface is clean. (orzare.com)
The DAILIES TOTAL1 water gradient technology reduces end-of-day dryness, as the water content approaches nearly 100% at the outermost surface of the lens. (contactscompare.com)
The basics of contact lens solutions that I've slowly moved away from are actually some of the most important aspects of lens care to understand: how they clean, disinfect and wet the lens surface to provide comfortable and safe contact lens wear. (reviewofcontactlenses.com)
A surfactant, or surface-active agent, is used to both clean and wet the contact lens. (reviewofcontactlenses.com)
The free hydrophilic ends are then able to react with water, and the micelle can then be whisked off the lens surface. (reviewofcontactlenses.com)
The size of the surfactant molecule affects how tightly it will bind to the lens surface, and subsequently how long it will stay on the lens surface. (reviewofcontactlenses.com)
The production of soft hydrophilic contact lens adopts semi molding turning process, that is, the front surface treatment of lens is multi base arc single focus turning process, and the rear surface treatment of lens is molding process. (db-eyes.com)
In this process, the surface of the lens blank after high-temperature treatment is cut to cut the optical area, mixing transition area and edge of the lens. (db-eyes.com)
The turning process is the process of forming important quality characteristics such as lens optical performance, center thickness, surface and edge. (db-eyes.com)
The lens surface is processed by multi arc surface single focus turning process, and polished by 200-500 mesh ultra-fine alumina mirror, so as to remove the turning trace on the lens surface and ensure the wearing comfort of the outer arc surface of the lens. (db-eyes.com)
Because the final lenses are moulded against a surface that has already been injection-moulded, any imperfection within the mould will find its way into the lens," he explains. (cleanroomtechnology.com)
This treatment renders the PDMS surface hydrophilic, allowing water to wet (this is regularly required for water-based microfluidics). (dimethicone.net)

34 Increasing water content and/or ionicity of the lens material greatly enhances protein deposition, 25 , 29 - 32 , 35 - 37 with lysozyme being detectable on FDA group IV lenses after wearing times for as little as one minute. (siliconehydrogels.org)
Hydrogels are three-dimensional materials that are hydrophilic, or water loving. (livescience.com)
3.Safe And Protective Environment: Sodium chloride, borax, boric acid, and purified water are combined into a lens preservation solution, which gives the product a storage environment with similar osmotic pressure to the human body. (colourfuleye.com)
These lenses use a material that holds water for longer, keeping your eyes hydrated for hours on end. (feelgoodcontacts.in)
ALTIUS® GREY-GREEN performance colored contact lenses is engineered for open-air sports and recreational activities, on-water, and on-land, in a wide range of outdoor light conditions. (altiusvision.com)
If instilled into the eyes, immediately remove lenses and flush eyes with fresh tap water until cleaner is thoroughly removed from the eyes. (otcsuperstore.com)
Some people use tap water as a way to wash and store contact lenses but this act should be avoided as tap water hosts a microbe called Acanthamoeba, which can cause eye infections. (orzare.com)
Soft lenses absorb water and in turn, they absorb bacteria. (orzare.com)
Even without the risk of getting an infection, wearing contact lenses stored in tap water is painful. (orzare.com)
Protect your eyes by removing your contact lenses before you come in contact with water. (orzare.com)
Instead of using tap water, homemade solution, or any other liquid suggested on the internet, use a fresh contact lens solution. (orzare.com)
Do not allow any contact between your lenses and water. (orzare.com)
Never soak your contact lens in water, as mentioned above. (orzare.com)
In addition to the bacteria, some lenses are made from hydrophilic material and absorb water and it will become impossible for you to put them back in your eyes. (orzare.com)
Wash your hands, before taking off the lenses, with warm soapy water and then dry them. (orzare.com)
These contact lenses are comprised of over 80% water content and are extremely breathable with a Dk/t of 156. (jeangalea.com)
The more check items, the better the lens with a water content of 50% or less! (o-lola.com)
DAILIES TOTAL1 Multifocal 90 pack contact lenses are the first and only water gradient lenses designed for people with presbyopia. (contactscompare.com)
Warning: Reuse of solution or use of water with lenses may lead to contamination resulting in eye injury and potential loss of vision. (dryeyenest.com)
Specifications: Contents: 45% Terpolymerimmersed, 55% water, in a sterile buffered saline solution Color: Smoke Gray SPH: Plano BC: 8.60 Dia: 14.20 Pack: 12 lens in 1 box 1 day daily color lens also a. (esuppliersindia.com)

Disposable lenses not only have reduced the frequency of a torn lens, but also provide a better eye health solution than cleaning alone. (anewvisioninc.com)
The majority of PureVision contacts are monthly disposable lenses only intended for daytime use. (contactlenses.it)
Anyone can purchase PureVision 2 HD monthly disposable lenses on Contactlenses.it. (contactlenses.it)

Before we begin talking specifically about contacts, let's review how vision works and how lenses correct refractive vision problems. (howstuffworks.com)

Hydrophilic rubber ear and nose pieces for a no-slip fit. (fwoutfitters.com)

The diameter of the lens. (feelgoodcontacts.in)
Use ScleralFil preservative free saline solution only with soft (hydrophilic), rigid gas permeable, hard, and large diameter (scleral) contact lenses. (dryeyeshop.com)

Contact lenses are closer to natural sight than eyeglasses. (howstuffworks.com)

For people who need vision correction but don't want to wear glasses, contact lenses offer an easy, virtually invisible solution. (howstuffworks.com)
Although nearly 36 million Americans wear contact lenses, not everyone wears them to correct vision problems. (howstuffworks.com)
In this article, we'll learn how contact lenses correct sight, look at the variety of lens options that are available and find out how to wear them safely. (howstuffworks.com)
The tri-layer printing technique keeps the pigmented layer in the centre and isolated from the eye, while retaining its colour over time making the lens safe for daily wear. (miacare.com)
Some wear contact lenses as they feel safer and more comfortable while others wear them for a makeover. (orzare.com)
Well, whatever the reason you wear clear contact lenses prescription , they must be stored correctly. (orzare.com)
If you wear daily disposable contact lenses then you have the convenience of disposing of them after every use and not worrying about their storage. (orzare.com)
These are monthly extended wear lenses which means that you can wear them for a maximum of one month without the need to remove them. (jeangalea.com)
Most eye specialists prefer dailies as its easier to avoid infections in this way, but some people do have the need for extended wear lenses, and these are very comfortable indeed. (jeangalea.com)
SofLens 38Bausch + Lomb monthly disposable contact lensesBausch & Lomb SofLens 38 monthly wear contact lenses is suitable for people who wear cont. (eeconshop.com)
Use while wearing daily and extended wear soft (hydrophilic) and RGP contact lenses. (myeyesupply.com)
The main reason for replacing soft lenses is to reduce the amount of infections and/or wearing complications association with lens wear. (anewvisioninc.com)
When the deposits begin to accumulate on (and in ) the lens, visual clarity declines and the lens becomes more uncomfortable to wear. (anewvisioninc.com)
Children selected to wear MiSight Soft Contact Lenses should be chosen for their motivation to wear contact lenses, general health and cooperation. (mackeyopticians.com)
An eye examination, including personal and family history, refraction, keratometry, biomicroscopy, and other pertinent tests and measurements will be performed to rule out any contraindications to contact lens wear. (mackeyopticians.com)
Based on the clinical study, it is recommended that the patient wear the lens for a minimum of 10 hours per day for at least 6 days per week. (mackeyopticians.com)
Daily wear lenses are not indicated for overnight wear, and children should not wear lenses while sleeping. (mackeyopticians.com)
It is recommended during the first several months of wear, that children wearing contact lenses see their Optometrist more often to assure good contact lens hygiene practices are developed. (mackeyopticians.com)
With this unique design feature, PureVision contacts remain clean and comfortable even after a month of wear. (contactlenses.it)
Even if your product's label says it's suitable for continuous wear, Contactlenses.it recommends talking with your doctor first. (contactlenses.it)
About Unique pH Multi-Purpose Solution Multi-purpose solution for RGP lenses Compatible with Hydra-PEG lens coating Available in 4oz (120mL) or 2.5oz (75mL) size Includes a free lens case Description A multi-purpose solution for gas permeable contact lenses Cleans, conditions, and disinfects in one bottle Provides customized lens wear, comfort-based on. (dryeyenest.com)
This formula is designed to provide a soothing effect during lens wear. (dryeyenest.com)
Today, there are estimated to be 125 million people who wear contact lenses globally. (cleanroomtechnology.com)
Much of this demand is driven by people who no longer want to wear glasses, as well as improvements in lens technology," says Nigel Flowers, MD of Sumitomo (SHI) Demag UK. (cleanroomtechnology.com)
Giant papillary conjunctivitis induced by hard or soft contact lens wear: quantitative histology. (medscape.com)
García-Posadas L, Contreras-Ruiz L, Soriano-Romaní L, Dartt DA, Diebold Y. Conjunctival Goblet Cell Function: Effect of Contact Lens Wear and Cytokines. (medscape.com)
Complications and symptoms with disposable daily wear contact lenses and conventional soft daily wear contact lenses. (medscape.com)

It adopts high-performance servo controlled automatic mold injection molding machine and self-developed technology, with an annual output of 180 million contact lens molds of different specifications. (db-eyes.com)

Every day more and more people are switching from glasses to clear contact lenses prescription . (orzare.com)
Try keeping a pair of glasses with you in case you need to take out your lenses and don't have the solution or case with you at the moment. (orzare.com)
Glasses also come in handy when the contact lenses are irritating your eyes and you have to take them out but can't see without them. (orzare.com)
Try getting small glasses rather than large glasses as it is easier to reach their end and get your lenses back out. (orzare.com)
Are You Ready For Life Without Glasses Or Contacts? (magruderlaservision.com)
Staying true to POCs active heritage, the glasses feature hydrophilic rubber grips on the nose and temple to ensure a secure fit, even when wet. (highrollercyclery.com)

Systane Contacts Rewetting Eye Drops moisten your lenses and help remove debris that may cause irritation and discomfort. (myeyesupply.com)
According to the company, AerGel naturally wicks away debris and protein deposits from all PureVision contacts. (contactlenses.it)
Soaking your gas-permeable contact lenses in Unique pH ® removes dirt, protein, and debris. (dryeyenest.com)

The lenses have a softer texture ensuring your eyes stay comfortable throughout. (miacare.com)

This solution conditions lenses by adjusting to the eye's natural tear pH to enhance the wettability and comfort of gas permeable contact lenses on insertion. (dryeyenest.com)
If you are diagnosed with cataracts, which is when your eye's natural lens slowly becomes cloudy over time, then you may be recommended for IOL implants, also known as intraocular lenses. (magruderlaservision.com)
These are tiny, artificial lenses that replace your eye's natural lens during cataract surgery. (magruderlaservision.com)

Insertion and removal is done in the conventional manner used for soft hydrophilic contact lenses. (mackeyopticians.com)

24h Daily Disposable Contact Lens - 30 Lens Pack (-0.50 To -9.00 By Dealskart Online Services Pvt. (tradeindia.com)
Eyes For Life UK Limited Produces World Class Daily Disposable Colored Contact Lenses In Korea. (tradeindia.com)
12. Alcon DAILIES TOTAL1® Contact Lens Parameters https://professional.myalcon.com/contact-lenses/daily/dailies-total-1/ (accessed 18/09/2020). (ultraoneday.be)
They are daily lenses, so you pop them in your eyes in the morning and throw them away in the evening before you head to bed. (jeangalea.com)
These are also very good daily lenses and many people report that they feel they are more comfortable than the Acuvue Oasys ones. (jeangalea.com)
There are too many soft contact lenses to name, from daily to bi-weekly to monthly disposables, colored to customs, and an array of specialties covering anything from prosthetics to "cheetah eyes" for halloween! (anewvisioninc.com)
The lens fits and is comfortable similar to other daily disposable soft contact lenses. (mackeyopticians.com)
The MiSight lenses are indicated for daily disposable replacement. (mackeyopticians.com)

Let's take a closer look at what makes PureVision such a powerful name in the soft lens community. (contactlenses.it)
Below, we'll also go over how you could get your hands on some of the hottest PureVision products using Contactlenses.it. (contactlenses.it)
As alluded to in the intro, PureVision contacts are also well known for their use of AerGel Technology. (contactlenses.it)
Last, but certainly not least, PureVision contacts are coated with a proprietary "Performa" substance before they are ready for packaging. (contactlenses.it)
Be sure to read the expiration date listed on your PureVision box before using these lenses. (contactlenses.it)
What PureVision Contacts Are On Contactlenses.it? (contactlenses.it)
Due to the high demand for these lenses, Contactlenses.it always stocks up on PureVision products. (contactlenses.it)
Currently, Contactlenses.it has three PureVision products available for purchase. (contactlenses.it)
Contactlenses.it is proud to announce we now offer the advanced PureVision 2 HD lenses to all of our customers. (contactlenses.it)
In addition to getting rid of these annoying visual symptoms, PureVision 2 HD contacts have the comfortable materials you'd expect from any other PureVision lens. (contactlenses.it)

In this work, we studied the capability of different soft contact lenses to adsorb and release LF to restore cellular viability in oxidative stress conditions. (unimib.it)
Cleans soft contact lenses without rubbing. (cub.com)
Hydrophilic materials that are commonly used in soft contact lenses. (o-lola.com)
He successfully developed and commercialised his first major discovery - the materials used in soft contact lenses. (superdielectrics.com)
Soft contact lenses differ in the recommended replacement frequency. (anewvisioninc.com)

5.Sandwich Technology: The FDA-approved sandwich technology sandwiches the color between two layers of lens material, preventing the colored part from touching the eyeball and causing a foreign body sensation. (colourfuleye.com)
Conduct three-stage high-temperature forming (temperature control accuracy 0.1C) for the feeding mold, and the main material filled in the gap between the mold and the template is cured at high temperature to form the lens blank. (db-eyes.com)

Miacare contact lens is designed using the exclusive dot matrix pattern that blends naturally with your eye colour while leaving ample space for oxygen to pass through, delivering ultimate comfort to your eyes. (miacare.com)
6.FreshX-Technology: FreshX technology makes contact lenses extremely oxygen-permeable while also adding NVP hydrophilic factor to keep eyes comfortable and moist. (colourfuleye.com)
The Secret to Having Sparkling Eyes Miacare contact lenses are made with an unusual dot matrix pattern that blends seamlessly with your eye color while allowing plenty of room for oxygen to travel through, resulting in optimal comfort for your eyes. (malayaoptical.com)
The risk of infection also increases, because oxygen cannot permeate the lens as easily as it is "blocked" by the deposits. (anewvisioninc.com)

If these symptoms persist, you should contact your Mackey Opticians optometrist. (mackeyopticians.com)

Enhances the lens' softness for better eye comfort. (miacare.com)

Clear Care solution has the cleaning power of 3% hydrogen peroxide, which bubbles to actively clean, disinfect and remove protein from lenses. (cub.com)
The convenient liquid works right in your lens case as you disinfect your lenses so it's easy to use and saves time. (abebox.com)

Toric lenses are currently available in bi-weekly, monthly and quarterly replacement frequency. (anewvisioninc.com)
Blog / IOL Implants: Lens Replacement To Correct Catar. (magruderlaservision.com)

Clear Care Cleaning & Disinfecting Solution is a Sterile Solution Containing Micro-Filtered Hydrogen Peroxide (3%), Sodium Chloride (0.79%), Stabilized with Phosphoric Acid, a Phosphate Buffered System, and Pluronic (Pluronic is a trademark of BASF) 17R4 (a Cleaning Agent), This Carton Also Includes a Specialized Lens Case with Neutralizing Disk. (cub.com)
For all other types of lenses, you have to store the lenses in a sterile contact lens case which is filled with contact lens solution. (orzare.com)

The solution disinfects lenses using antimicrobial agents, which destroy harmful microorganisms (germs), commonly found on the surfaces of lenses. (dryeyenest.com)

Anatomy14

Organisms5

Diseases31

Chemicals and Drugs15

Analytical, Diagnostic and Therapeutic Techniques and Equipment25

Psychiatry and Psychology1

Phenomena and Processes5

Disciplines and Occupations2

Technology, Industry, Agriculture6

Health Care5

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

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

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

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

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

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

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

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

Contact Lenses

Contact Lenses, Hydrophilic

Contact Lens Solutions

Keratitis

Silicones

Acanthamoeba Keratitis

Lenses

Acanthamoeba

Cornea

Tears

Corneal Ulcer

Prosthesis Fitting

Disposable Equipment

Keratoconus

Lenses, Intraocular

Aphakia

Corneal Edema

Corneal Topography

Eye Infections, Bacterial

Corneal Diseases

Hydrogel

Cataract

Contact Lenses, Extended-Wear

Lens Cortex, Crystalline

Lens Capsule, Crystalline

Eyeglasses

Lens Nucleus, Crystalline

Refraction, Ocular

Lens Diseases

Disinfection

Lens Implantation, Intraocular

Hydrogels

Fusariosis

Myopia

Visual Acuity

Equipment Contamination

Presbyopia

Fluorophotometry

Polyhydroxyethyl Methacrylate

Astigmatism

Eye Infections, Fungal

Crystallins

Methylmethacrylates

Epithelium, Corneal

Eyelids

Lens Subluxation

Refractive Errors

Disinfectants

Eye Infections

Corneal Stroma

Eye

Orthokeratologic Procedures

Hygiene

Silicone Elastomers

Ophthalmic Solutions

Dry Eye Syndromes

Eye Diseases

Hyperopia

Endothelium, Corneal

Contact Tracing

Interferometry

Conjunctiva

Cataract Extraction

Accommodation, Ocular

Eye Proteins

Corneal Transplantation

Amebiasis

Dermatitis, Contact

Ophthalmodynamometry

Equipment Design

Biguanides

Serratia Infections

Optics and Photonics

Pseudophakia

Keratoplasty, Penetrating

Dermatitis, Allergic Contact

Ophthalmology

Radiation Protection

Methacrylates

Lasers, Excimer