• A transparent external surface , the cornea, that covers both the pupil and the iris. (utah.edu)
  • Anterior chamber (between cornea and iris), Posterior chamber (between iris, zonule fibers and lens) and the Vitreous chamber (between the lens and the retina). (utah.edu)
  • Light rays are focused through the transparent cornea and lens upon the retina. (utah.edu)
  • The first comes from the cornea, the transparent covering of the iris and pupil, and the other two from the lens, the upright one from the front and the inverted one from the back. (iblindness.org)
  • Each left eye was fixed to the scanning device suction ring while the cornea was applanated by with a flat glass contact lens (Figure 1), enabling intralenticular laser pulse scanning with a resolution of 1 µm. (crstodayeurope.com)
  • No hazardous side effects to the cornea or the lens capsule were observed. (crstodayeurope.com)
  • Light enters the human eye via the transparent cornea, the eye's front window, which acts as a powerful convex lens. (answersingenesis.org)
  • The cornea with the anterior chamber and lens refracts light with the cornea. (pdxglasses.com)
  • It captures light sent through the cornea and crystalline lens. (pdxglasses.com)
  • The sclera 131 is the white tissue that surrounds the lens 103 except at the cornea 101 . (justia.com)
  • The cornea 101 is the transparent tissue that comprises the exterior surface of the eye through which light first enters the eye. (justia.com)
  • Generally, sight occurs when light enters the eye through the cornea 101 and pupil, then proceeds through the ocular lens 103 through the vitreous 110 along the visual axis 104 , strikes the retina 105 at the back of the eye, forming an image at the macula 106 that is transferred by the optic nerve 107 to the brain. (justia.com)
  • The space between the cornea 101 and the retina 105 is filled with a liquid called the aqueous 117 in the anterior chamber 109 and the vitreous 110 , a gel-like clear substance, in the chamber posterior to the lens. (justia.com)
  • This appears safer for both the cornea (the window of the eye) and the natural crystalline lens. (pricevisiongroup.com)
  • This difference in optical density between the air the corneal material combined with the fact that the cornea has the shape of a converging lens is what explains the ability of the cornea to do most of the refracting of incoming light rays. (physicsclassroom.com)
  • The bulging shape of the cornea causes it to refract light in a manner to similar to a double convex lens . (physicsclassroom.com)
  • The focal length of the cornea-lens system varies with the amount of contraction (or relaxation) of the ciliary muscles and the resulting shape of the lens. (physicsclassroom.com)
  • Quite conveniently, the cornea-lens system produces an image of an object on the retinal surface. (physicsclassroom.com)
  • For now we will assume that the cornea-lens system has a focal length of 1.80 cm (0.0180 m). (physicsclassroom.com)
  • Two types of intraocular lenses (IOLs) are mainly used in hyperopes: the precrystalline lens implant (implantable Collamer lens) and the iris-fixated lens (Artisan lens). (medscape.com)
  • In 1977, Worst designed and used a pure iris support lens. (medscape.com)
  • This iris claw lens was fixed to the anterior surface of the iris independent of the pupil. (medscape.com)
  • An iris claw lens is shown in the image below. (medscape.com)
  • The iris claw lens for a phakic hyperopic eye, implanted in the eye of a blue-eyed patient. (medscape.com)
  • Minimal essential iris fold in the lens claw exists for the purpose of fixation. (medscape.com)
  • Jan Worst, the designer of the lens, considers the peripheral part of the iris as a silent area. (medscape.com)
  • In 1986, Fechner used a negative-power iris claw lens for treating phakic myopes. (medscape.com)
  • The sagittal section of the eye also reveals the lens which is a transparent body located behind the iris. (utah.edu)
  • After passing through the pupil (the aperture in the iris diaphragm) light is further refracted by the crystalline lens . (answersingenesis.org)
  • Later, after the lens had been reposited into the posterior chamber, (2A) slit lamp showed the anterior chamber without the mass, and (2B) indirect biomicroscopy ophthalmoscopy with a 20-D lens showed the crystalline lens behind the iris. (aao.org)
  • The ocular or natural crystalline lens 103 , a more detailed picture of which is shown in FIG. 8 A , (utilizing similar reference numbers for similar structures) is located just posterior to the iris 102 . (justia.com)
  • Light is further converged by the crystalline lens located posterior to the iris. (medscape.com)
  • A growing number of studies have found that lower efficiency of astigmatism correction by laser systems is mainly due to the eye's internal optics, crystalline lens is the largest component of it. (nature.com)
  • The EVO is easily removed later in life when cataracts naturally occur, and the EVO does not make changes to the corneal surface or increase the risk of dry eye symptoms. (pricevisiongroup.com)
  • The contraction or relaxation of these ligaments as a consequence of ciliary muscle actions, changes the shape of the lens, a process called accommodation that allows us to form a sharp image on the retina. (utah.edu)
  • The wire has to travel over the surface of the retina to a point where it dives through a hole in the retina (the so-called 'blind spot') to join the optic nerve. (answersingenesis.org)
  • The retina is a light-sensitive layer of tissue lining the surface of the eye. (pdxglasses.com)
  • ciliary muscles, and a retina (inner surface equipped with nerve cells). (physicsclassroom.com)
  • We were also considering an inflammatory process (such as sympa-thetic ophthalmia, especially given the patient's history of ocular trauma), an ocular surface issue (given possible exposure related to multiple lid recon-structive procedures), and the possibility of onset of a phthisic globe. (aao.org)
  • Exam of the left eye was unremark-able except for mild ocular surface staining. (aao.org)
  • The terms ocular lens, natural crystalline lens, natural lens, natural human crystalline lens, and lens (when referring to the prior terms) are used interchangeably herein and refer to the same anatomical structure of the human eye. (justia.com)
  • Generally, the ocular lens changes shape through the action of the ciliary muscle 108 to allow for focusing of a visual image. (justia.com)
  • A neural feedback mechanism from the brain allows the ciliary muscle 108 , acting through the attachment of the zonules 111 , to change the shape of the ocular lens. (justia.com)
  • Refractive corneal surgery had the potential to rival the visual results of phakic lens implants, as it can correct both the spherical error and the cylindrical error. (medscape.com)
  • When the optician applies techniques to calcium fluoride that have been optimized over many years for optical glass, it becomes difficult to polish spherical surfaces with small figure errors, particularly steeply curved surfaces. (laserfocusworld.com)
  • Freely designable optical surface profiles offer lighter, simpler, and more compact assemblies versus their spherical counterparts, but they are more challenging to manufacture and measure. (photonics.com)
  • with an anterior chamber depth (ACD) of 3.00 mm or greater, when measured from the corneal endothelium to the anterior surface of the crystalline lens and a stable refractive history (within 0.5 D for both spherical equivalent and cylinder for 1 year prior to implantation). (staar.com)
  • Using a multi-axis controller, the system synchronizes all motion axes (two for the mask, four for the bearing) with the firing of the laser to precisely etch grooves into almost any spherical surface. (machinedesign.com)
  • The spherical nanolenses shown in this electron microscope image have separated from the crystalline nanotubes underneath them. (technologyreview.com)
  • The lenses are flat on one side and spherical on the other and range in diameter from about 50 nanometers to three micrometers. (technologyreview.com)
  • And it is the first time the properties of a spherical lens this small have been tested, says Kwang Kim , head of the Center for Superfunctional Materials at Pohang University, who led the research. (technologyreview.com)
  • Kim's team makes the tiny spherical lenses by evaporating a solution containing cup-shaped organic molecules. (technologyreview.com)
  • Spherical lenses are ordinarily made using multistep lithography to create a mold that is then patterned with polymers and heated, he says. (technologyreview.com)
  • The latter structures also share the electromagnetic origin, but are related to the incident field interference with the scattered far-field of rough non-metallic or transiently metallic surfaces. (nature.com)
  • In spite of the fact that laser-induced periodic surface structures (LIPSS) and volume nanogratings have many characteristics in common, both are often attributed to different phenomena, taking place close to surface or deep in the bulk of the material 5 . (nature.com)
  • It is located in one of the small outcrops of crystalline limestone (geological structures common in the region of Międzylesie) between a small stream bed and a karst spring. (palaeo-electronica.org)
  • By controlling energy density, the system can safely process hardened steels, ceramics, and polymers as well as crystalline structures. (machinedesign.com)
  • These form a framework for the support of the nervous structures (Fig. 688, M). They begin at the inner surface of the nerve-fibre layer in single or forked expanded bases, by the apposition of which a delicate membrane, the membrana limitans interna, is formed. (co.ma)
  • Blue crystalline surface, viral viral window of convex lens. (tjhy-gift.com)
  • This approval represents a meaningful expansion of the Implantable Collamer® Lens (ICL) product line for the correction of refractive error in patients with both myopia and astigmatism which are common conditions in the United States (US). (staar.com)
  • 2 Ieong A.et al, Quality of Life in High Myopia before and after Implantable Collamer Lens Implantation. (staar.com)
  • STAAR's lens used in refractive surgery is called an Implantable Collamer® Lens or "ICL," which includes the EVO Visian ICL™ product line. (staar.com)
  • The little hole is the small central port placed in the middle of an ICL (Implantable Collamer Lens) from STAAR Surgical. (pricevisiongroup.com)
  • The EVO ICL lens (EVO) opens refractive surgery up to a huge patient population. (crstoday.com)
  • In precision optics, diamond turning is a niche application and is usually only possible with metals and certain crystalline materials, such as germanium, zinc selenide, calcium fluoride, and silicon. (photonics.com)
  • On most occasions, single-crystalline germanium is used as optical lens substrate because its homogeneous structure is beneficial for fabricating uniform optical surfaces. (elsevierpure.com)
  • We conducted ultraprecision cutting experiments on poly-crystalline germanium to examine the microscopic machinability. (elsevierpure.com)
  • This work indicates the possibility of fabricating high-quality infrared optical components from poly-crystalline germanium. (elsevierpure.com)
  • So far, they've demonstrated that the tiny lenses can be used for ultraviolet lithography, for imaging objects too tiny for conventional lenses, and for capturing individual photons from a light-emitting nanostructure called a quantum dot. (technologyreview.com)
  • To examine the properties of the lenses, the Korean researchers manipulated them using the tip of an atomic-force microscope, placing them on various surfaces for imaging or lithography. (technologyreview.com)
  • And when the lenses were used to focus ultraviolet light for lithography, they could resolve spots as small as 100 nanometers in the open air (the normal limit is about 192 nanometers). (technologyreview.com)
  • Mineralization at the Graphite Creek Property is characterized by coarse crystalline (large flake) graphite (greater than 80 mesh) within graphite-bearing schist(s). (azomining.com)
  • Its name is most probably derived from the white, coarse, salt-resembling, crystalline limestones which form the lens. (palaeo-electronica.org)
  • The nu-cleus appeared to be tethered by a clear membrane consistent with a torn lens capsule that extended from behind the pupil. (aao.org)
  • 13, 2018-- STAAR Surgical Company (NASDAQ: STAA), a leading developer, manufacturer and marketer of implantable lenses and companion delivery systems for the eye, is today announcing that the FDA has granted approval of the PMA Supplement for the Visian Toric ICL for the correction of myopia with astigmatism. (staar.com)
  • Its core businesses include contact lenses and lens care products, ophthalmic surgical devices and instruments, and ophthalmic pharmaceuticals. (bausch.com)
  • Calcium fluoride is clearly better than fused silica at this wavelength, but still represents a significant relative reduction in transmission from materials at 193 nm, considering that a typical lithographic projection lens might have 60 surfaces and nearly a meter of optical path. (laserfocusworld.com)
  • Freeform surfaces are useful not only in ophthalmic applications, but also in precision optics . (photonics.com)
  • This is particularly relevant for lenses in precision optics, which are usually made of mineral glass, ceramic materials, or crystals rather than lightweight plastic. (photonics.com)
  • Like Donders, he found the image obtained by the ordinary methods on the front of the lens very unsatisfactory, and in his "Handbook of Physiological Optics" he describes it as being "usually so blurred that the form of the flame cannot be definitely distinguished. (iblindness.org)
  • The size of each lens is on the same length scale as the wavelength of light that it interacts with, meaning that "the usual optics don't hold," says Chee Wei Wong , head of the Optical Nanostructures Laboratory at Columbia University in New York, who helped evaluate the lenses' performance. (technologyreview.com)
  • Clear lens extraction causes a loss of accommodation but is preferred if the patient is older than 45 years or has any degree of cataract. (medscape.com)
  • With such precision, researchers are rewriting the future of bearing technology, creating slippery surfaces on which networks of microscopic holes and grooves function like built-in lubrication systems. (machinedesign.com)
  • This is the first and most powerful lens of the optical system of the eye and allows, together with the crystalline lens the production of a sharp image at the retinal photoreceptor level. (utah.edu)
  • En face OCT reflectance images which accompany OCTA studies offer a glimpse of the macrophage-like cellular activity above the retinal surface which responds to systemically instigated vascular events below. (stanford.edu)
  • Periodic self-organization of matter beyond the diffraction limit is a puzzling phenomenon, typical both for surface and bulk ultrashort laser processing. (nature.com)
  • Other researchers are making devices that overcome the diffraction limit using so-called metamaterials, which bend light in unnatural ways, or nanoscale metal gratings, which capture light through surface interactions. (technologyreview.com)
  • The new lenses, developed by researchers at the Pohang University of Science and Technology in Korea, overcome the diffraction limit because of their size. (technologyreview.com)
  • To demonstrate imaging beyond the diffraction limit, the lenses were used in conjunction with an optical microscope to resolve the details of a chip patterned with metallic stripes 220 nanometers apart. (technologyreview.com)
  • 2001). A that BPTI possesses a self-complementary surface that might molecular approach is evidently needed, which recognizes stabilize a dimer (Zielenkiewicz et al. (lu.se)
  • The classic example of a freeform surface in ophthalmic applications is the varifocal lens commonly used in eyeglasses. (photonics.com)
  • The great advantage of varifocal lenses is that they combine different strengths in one lens. (photonics.com)
  • Similar to the varifocal lens in ophthalmic applications, the freeform surface must also be elaborately calculated and designed. (photonics.com)
  • b, on the front of the lens- c, on the back of the lens. (iblindness.org)
  • Note that in No. 2, A, the central images are smaller and have approached each other, a change which, if it actually took place would indicate an increase of curvature in the front of the lens during accommodation. (iblindness.org)
  • And since an image reflected from a convex surface is diminished in proportion to the convexity of that surface, he concluded that the front of the lens became more convex when the eye adjusted itself for near vision. (iblindness.org)
  • Cramer, (7) acting on this suggestion, examined the images as magnified from ten to twenty times, and thus convinced himself that the one reflected from the front of the lens became considerably smaller during accommodation. (iblindness.org)
  • During accommodations, it seemed to him that the two images on the front of the lens became smaller and approached each other, while on the return of the eye to a state of rest they grew larger again and separated This change, he said, could be seen "easily and distinctly. (iblindness.org)
  • 7 however, focusing nanosecond laser pulses inside the lens caused bubble formation. (crstodayeurope.com)
  • In early investigations of the treatment of enucleated porcine and human cadaver lenses, Ripken et al10 showed that cutting patterns inside the lens tissue with femtosecond laser pulses, or femtosecond lentotomy, increased the flexibility of the lens. (crstodayeurope.com)
  • The in vivo application of femtosecond laser pulses in rabbits verifies the generation of specific geometric patterns inside the crystalline lens. (crstodayeurope.com)
  • Laser surface processing by multiple laser pulses promotes the transition from the high spatial frequency perpendicularly oriented nanoripples to the low spatial frequency ripples, parallel or perpendicular to the laser polarization. (nature.com)
  • Coronary sinus, normally located between the LEFT ATRIUM and LEFT VENTRICLE on the posterior surface of the heart, can serve as an anatomical reference for cardiac procedures. (bvsalud.org)
  • Ultimately, good surface quality and geometric accuracy can be achieved only through the polishing process. (photonics.com)
  • All of these lenses are foldable, which permits the surgeon to insert them through a small incision. (staar.com)
  • The cutting patterns created gliding planes for the hardened lens tissue. (crstodayeurope.com)
  • Photodisruption inside the lens tissue leads to small gas-filled bubbles that remain as small, faint opacities after the bubbles disappear. (crstodayeurope.com)
  • In contrast to the often fully automated production of ophthalmic lenses, precision optic lenses are usually produced in small batches numbering up to 20 or, more rarely, 100 pieces without the automated linking of processes. (photonics.com)
  • The demands on these lenses in terms of accuracy, optical properties, and durability are ~10 to 1000× greater than for ophthalmic lenses. (photonics.com)
  • STAAR, which has been dedicated solely to ophthalmic surgery for over 30 years, designs, develops, manufactures and markets implantable lenses for the eye with companion delivery systems. (staar.com)
  • An angle-supported lens has been used very rarely in hyperopes and has fallen out of fashion owing to associated complications related to increased intraocular pressure and loss of endothelial cells. (medscape.com)
  • This material forms in the crystalline phase. (wikipedia.org)
  • Requirements for extremely low stress birefringence and high homogeneity (on the order of 0.1 to 1.0 parts per million) have placed new levels of difficulty on the industry, while larger optical-element diameters exacerbate the shortage of the high-quality material necessary for stepper and scanner lenses. (laserfocusworld.com)
  • The primary purpose is to apply constant pressure and velocity at all points of the workpiece surface to remove material uniformly. (laserfocusworld.com)
  • This universal slimmed profile crystalline lens manipulator benefits from a chopper on one end, and a spatulated paddle on the opposite end, in order to accommodate any phaco technique, or density of lens material. (bausch.com)
  • This serves to induce small alterations in the amount of corneal bulge as well as to fine-tune some of the additional refraction that occurs as light passes through the lens material. (physicsclassroom.com)
  • The lens is 8.5 mm at the widest point, far away from the angle of the anterior chamber. (medscape.com)
  • The exam was most notable for something we saw in the right eye-a large dense hexagonal brown mass in the anterior chamber consistent with a dislocated crystalline lens nucleus ( Fig. 1 ). (aao.org)
  • With this finding, we diagnosed lens luxation into the anterior chamber. (aao.org)
  • Furthermore, Mdm2 in only one allele was sufficient to rescue these deleterious effects, since the mdm2 +/− /Tg p53 t/0 mice had eye size and lens morphology similar to the control mice. (molvis.org)
  • The characteristic ripple appearances are predicted by combined electromagnetic and thermo-mechanical approaches and supported by SEM images of the final surface morphology and by time-resolved pump-probe diffraction measurements. (nature.com)
  • Hence allowing a three-dimensional image of the mask to be produced, the resulting glass microstructures have a surface roughness in the range 5 μm to 0.7 μm. (wikipedia.org)
  • The Artisan lens is shown in the image below. (medscape.com)
  • These displays project a straight image onto a curved glass surface, which means that the distortion of the curved projection surface in the lens of the head-up display must be anticipated so it can be precisely canceled out from the perspective of the viewer. (photonics.com)
  • The task of a head-up display is to project a straight image onto a curved glass surface. (photonics.com)
  • On its way to the bearing the beam passes through a multi-element lens that shrinks the image to the actual size. (machinedesign.com)
  • Because of the way light scatters, or diffracts, even a perfect lens cannot distinguish two objects that are closer together than half the wavelength of the light used to image them. (technologyreview.com)
  • As learned in our discussion of convex lenses in Lesson 5 , the image location, size, orientation, and type is dependent upon the location of the object relative to the focal point and the 2F point of a lens system. (physicsclassroom.com)
  • Since the object is typically located at a point in space more than 2-focal lengths from the 'lens,' the image will be located somewhere between the focal point of the 'lens' and the 2F point. (physicsclassroom.com)
  • The use of the lens equation and magnification equation can provide an idea of the quantitative relationship between the object distance, image distance and focal length. (physicsclassroom.com)
  • To determine the image distance, the lens equation can be used. (physicsclassroom.com)
  • As long as the film is thicker than surface roughness, there will be no contact and, subsequently, no adhesive wear in the bearing. (machinedesign.com)
  • There are lots of different kinds of eye drops, most of which can be used by contact lens wearers. (coopervision.com)
  • The RPE cells have fine hair-like projections on their inner surface called microvilli which lie between and ensheath the tips of the photoreceptor outer segments. (answersingenesis.org)
  • This consists of a single stratum of cells which, on surface view, are hexagonal (Fig. 690), their outer flattened surfaces being firmly attached to the chorioid. (co.ma)
  • HN - 2008 MH - Superior Sagittal Sinus UI - D054063 MN - A07.231.908.224.667 MS - The long large endothelium-lined venous channel on the top outer surface of the brain. (bvsalud.org)
  • 9) (8) So he placed two lights, or one doubled by reflection from a mirror, behind a screen in which were two small rectangular openings, the whole being so arranged that the lights shining through the openings of the screen formed two: images on each of the reflecting surfaces. (iblindness.org)
  • The displacement of the crystalline lens by a photo-acoustic wave is measured in a non-contact manner using the interferometer of the light, the elasticity value is derived from the properties of the displacement, and the presbyopia is diagnosed. (riken.jp)
  • The lenses also work well for near-infrared light, which is used for telecommunications. (technologyreview.com)
  • To demonstrate the sensitivity of their lenses in this range, the Korean team placed a lens on top of a near-infrared light-emitting nanoparticle called a quantum dot and demonstrated improved detection efficiency. (technologyreview.com)
  • That is, they can only focus light onto or gather light from objects in extremely close physical proximity, and must be placed on top of the surface or held just hundreds of nanometers from it. (technologyreview.com)
  • Polarised lenses block vertically-reflected light by horizontally aligning the crystalline structure of the lens. (polasports.com)
  • Polarised lenses are light weight, eliminates glare and allows natural perception - ideal for use around water, snow and driving. (polasports.com)
  • It is a surprise to most people to find out that the lens of the eye is not where all the refraction of incoming light rays takes place. (physicsclassroom.com)
  • Documentation by previous eye providers had labeled Mr. Grover as aphakic in the right eye, suggesting that the lens dislocation happened years ago or around the time of the accident, with the nucleus initially falling into and resting in the vitreous cavity. (aao.org)
  • The purpose of this study was to determine if Mdm2 regulates p53 in vivo in the adult lens. (molvis.org)
  • Mdm2 regulates p53 in the adult lens in vivo. (molvis.org)
  • The slight dipping of the annular planes is caused by the refraction of the anterior surface of the lens. (crstodayeurope.com)
  • The cave must have still had a natural entrance from the surface during the Holocene. (palaeo-electronica.org)
  • This is a natural part of the aging process in which the crystalline lens inside your eye becomes less flexible. (coopervision.com)
  • The present invention relates to systems and methods for treating the structure of the natural human crystalline lens with a laser to address a variety of medical conditions, such as presbyopia and refractive error. (justia.com)
  • This means that the distortion of the curved projection surface in the lens of the head-up display must be anticipated so that it is then precisely canceled out in the addition. (photonics.com)
  • This is particularly true for precision-optic lenses with freeform surfaces. (photonics.com)
  • In most cases, each wave plate is available as a Ø1/2" optic mounted in a Ø1" unthreaded housing or Ø1" optic mounted in an engraved SM1-threaded (1.035"-40) lens tube (see below for more details). (thorlabs.com)
  • The idea that the change of focus might be brought about by a change in the form of the lens appears to have been first advanced, according to Landolt, (3) by the Jesuit, Scheiner (1619). (iblindness.org)
  • He predicted, however, that if the images were examined with a magnifier they would "show with certainty" whether the form of the lens changed during accommodation. (iblindness.org)
  • Both annular surfaces and the cylindrical cuts are visible in the form of two squares. (crstodayeurope.com)
  • During the evaporation process, the organic molecules form crystalline nanotubes that form the lenses. (technologyreview.com)
  • As a result, freeform surfaces can make complex optical systems more compact and can significantly reduce their overall weight. (photonics.com)
  • For this reason, production of precision lenses relies almost exclusively on high-quality and partly complex glass materials. (photonics.com)
  • Thorlabs' multi-order wave plates are made from high-quality crystalline quartz and provide either quarter-wave or half-wave retardance at a variety of popular wavelengths. (thorlabs.com)
  • Numerical calculations also support the multipulse accumulation nature of nanogratings formation on the surface and inside fused silica. (nature.com)
  • The large flake graphite occurs as disseminations and high grade segregations and lenses in distinctive sillimanite-garnet-quartz-biotite schist(s) and/or quartz-biotite schist(s). (azomining.com)
  • Without the lenses, this microscope, with a resolution limited to about 320 nanometers, couldn't resolve the same stripes. (technologyreview.com)
  • Although the new process is capable of putting complex grooves on complex surfaces, it can just as easily accommodate simpler surface geometries, along the lines of spindle, radial, angular contact, and thrust bearings. (machinedesign.com)
  • EHD films act like a cushion, separating contact surfaces, and will develop dynamically under the right conditions if the viscosity of the lubricating fluid increases with pressure. (machinedesign.com)
  • With the proper geometry, these grooves can achieve a self-priming and pumping action that continuously bathes bearing surfaces with lubricating fluid. (machinedesign.com)
  • Here we compare the mechanisms of periodic nanostructure formation on the surface and in the bulk of fused silica. (nature.com)
  • In addition, they can achieve very good surface qualities directly without the need for a subsequent polishing process. (photonics.com)
  • The crystalline lens is a transparent and biconvex structure. (pdxglasses.com)
  • 1991), none of the the structural details of the heterogeneous protein surface and experimental studies mentioned so far could provide un- takes into account a variety of short-range interactions, direct ambiguous information about oligomer structure. (lu.se)
  • Systems, methods and laser delivery patterns and operations for structural pillars in the lens of the eye to permit deformation of laser effected areas of the lens that are adjacent to the pillars. (justia.com)
  • Head-up displays can be produced exclusively with a freeform surface. (photonics.com)
  • Certain applications, such as head-up displays, can even be produced exclusively with a freeform surface. (photonics.com)
  • The triple coated sandwich lens contains the polarised anti reflective layer in the middle for durability, with a compressed TAC lens on the front and back. (polasports.com)
  • When sunlight bounces off a reflective surface such as glass, water or snow, the result is glare. (polasports.com)
  • These lenses are intended to provide visual freedom for patients, lessening or eliminating the reliance on glasses or contact lenses. (staar.com)
  • The lens of the eye is anything but thin and as such the lens equation does not provide a truly accurate model of the eye lens. (physicsclassroom.com)
  • In these situations, all-ceramic systems with greater opacity and crystalline phase content should be used, since they provide greater masking ability 2,7,9-11 . (bvsalud.org)