Cleaning in a counter clock wise direction may loosen the glass element from the ring. For this various auxiliary lenses are in use that range in optical properties and practical application. The cla platform includes both automated and manual versions. How to contact volk see the difference all lenses are not the same. Maxlight cr39 lenses are impact, chip and fracture resistant and are up to 44% lighter than comparable glass lenses. Also, a noncontact ruby lens provides a view that is neither reversed nor inverted. The use of auxiliary optics generally as a lens makes it possible however to bring the far point within the focusing range of the microscope. A mild detergent and water is ideal to clean the surface. Retina lens competitive comparison chart more ocular instruments advantages safer due to our superior optical design, we can use a larger spot size setting with our lens designs than volk. Mar 22, 2014 a short video using a digital camera attachemnt and volk lens slitlamp biomicroscopy. Volk1 single use lenses aim to reduce the potential for transmission of infectious disease while eliminating reprocessing costs sterilization patented double aspheric optics provide enhanced imaging of the optic disc and macula.
Primary application ultra high resolution viewing of the posterior pole. For decades, volk optical has provided discerning practitioners with the finest lenses for visualization and treatment of the eye. Volk diagnostic lenses volk 30d bio lens designs for vision is a specialist provider of products to the ophthalmic and optometry sector for over 40 years. M e is usually computed or quoted in reference to a standard viewing distance of 25cm 4d.
Volk has worked extensively with activison, he designed the m. Coloured lens available on request, delivery 3 to 4 weeks. Digital clear field indirect bio lens for highest resolution pan retinal examination. Volk optical introduced the 60d lens in the early 1980s and, in subsequent years, extended the range of lenses for the slit lamp by. The volk 20d acs lens is an industry standard general diagnostic lens. This is the only direct ophthalmoscope that will eliminate corneal glare due to the new registered. Accessories and other items can also be purchased by phone if you prefer. Gas pump girls meet the pulsating inconvenience from planet x. Volk indirect bio lenses, bio lenses, indirect lenses, volk. Use fundus contact lenses if you suspect subtle thickening or edema. With a converging lens, paraxial rays that are parallel to the principal axis converge to the focal point, f. The miniaturized highresolution hr widefield contact lens volk optical, inc.
Volk is a company that produces these lenses, and such is the popularity of the manufacturer that fundus biomicroscopy lenses are now commonly referred to as volk lenses. Volk will let you demo the lenses for a month in fact, we had several sets of lenses for all the residents to demo. In the volk spirit of improvement, our 2nd generation, digital series bio lenses were developed from the classic, 1st generation bio lenses, in a similar fashion to volk s digital series slit lamp lenses using computeraided optical design, improved glass materials, and enhanced antireflective coatings. Indirect bio lenses 16 slit lamp lenses 11 indirect contact laser lenses 14 direct contact laser lenses 17 special treatment lenses 5 gonio lenses 9 volk retinal imaging camera 1 lens accessories 3 price.
Here, youll learn about innovative new medications, diagnostic instruments, corrective lens options, inoffice laboratory equipment and many. The focal length, f, is the distance between f and the lens. Instructions for use product information volk optical. Patented double aspheric glass optics provide enhanced imaging. Volks doubleaspheric lenses eliminate more distortion for better overall imaging.
The products represented on this page represent the best in class for each of our product categories. Ensure you get the highest quality lenses to deliver the highest resolution, distortionfree imaging. Volk s transcend vold gonio tvg lens was developed in collaboration with transcend medical, and has been designed specifically for migs and all intraoperative gonioscopy procedures. Volks transcend vold gonio tvg lens was developed in collaboration with transcend medical, and has been designed specifically for migs and all intraoperative gonioscopy procedures. In addition to the new slt lens, the volk1 single use family includes contact laser treatment lenses for capsulotomy and iridotomy, 3mirror and 4mirror gonio lenses, noncontact surgical bio lenses 20d and 28d, and highresolution direct image surgical vitrectomy lenses. The image below represents an actual side by side comparison of a volk 20d lens compared with a non volk lens over a 2mm grid. Volk 30d small clear indirect bio lenses volk lenses. Available in automated or manual versions, the automated version is operated with. Volk1 single use noncontact surgical bio lenses pdf. Clean your lens one side at a time in a clock wise direction. All your needs from consulting room equipment to vision testing disposables and magnification solutions, designs for vision can help. Volks digital lenses are the latest generation non contact lenses for examination at the slit lamp and bio. Volk indirect bio lenses, bio lenses, indirect lenses.
High magnification provides excellent views of the optic disc and macula. Volk s digital lenses are the latest generation non contact lenses for examination at the slit lamp and bio. Ocular instruments has no affiliation with volk optical and provides product statistics from published literature for informational purposes only. Newer noncontact lenses, such as the digital wide field volk and the digital 1. The diopter value of a lens is a unit of refractive power of an optical lens, and is denoted by the inverse of the focal length of the lens. These lenses offer unmatched imaging, focusing capability, and minimal glare for retinal and anterior segment examinations and laser treatments.
They employ improved designs, coupled with superior materials and coatings for the highest resolution imaging of any non contact lenses. The tvgs unique floating lens feature, with stabilization ring and multiple pivot points, provides ocular control not possible with current surgical gonio lenses. For these lenses, the image height h and focal length f are often related by h 5 f. Fundus biomicroscopy lenses are probably the most important tool that the majority of optometrists have at their disposal to screen and diagnose posterior eye pathology. Save on optical equipment, ophthalmic instruments and optometry supplies from oculus, nidek, topcon, volk and keeler, view the largest range online. E game engine and was technical producer of the 1992 game leather goddesses of phobos 2. Lombart maintains a large inventory of highquality volk ophthalmic lenses to outfit your slit lamps and other pertinent exam equipment. Lenses clean and dry instantly, completely free of smudges, haze, lint and water spots, restoring light transmission to maximum levels for optimum. M e represents the amount of additional angular magnification needed for the examiner to clearly view the image produced by the condensing lens.
The image below represents an actual side by side comparison of a volk 20d lens compared with a nonvolk lens over a 2mm grid. Volk lenses all volk lenses are manufactured from highgrade glass material. Ocular instruments 1, 2 volk3 product specification ranges differences ezview 15d 14d 15d magnification 4. It is ideal for use on volk lenses, microscope eyepieces, cameras and other precision optical surfaces. Volk area centralis lens indirect contact lens a good field of view 7084 degrees excellent magnification 1. A wide variety of volk lens options are available to you, there are 197 suppliers who sells volk lens on, mainly located in asia.
These lenses offer unmatched imaging, focusing capability, and minimal glare for retinal and anterior. Classic slit lamp lenses volk indirect aspherical slit lamp lens primary application. Examination of the retina by slit lamp and volk double aspheric lenses is called a bio microscopic indirect ophthalmoscope bio. A slit lamp is an instrument consisting of a highintensity light source that can be focused to shine a thin sheet of light into the eye. Volk precision optical lens cleaner wipes are highly absorbent, lintfree optical towelettes moistened to an exact saturation level with a unique combination of oil removers and cleaning agents.
For a limited time, volk is offering a free sample pack of volk1. Miniaturized highresolution widefield contact lens for. Volk product maximum spot size microns product maximum spot size microns omraprp165 275 super quad 200 omrawf 400 quadraspheric3 200. There has been considerable emphasis on the need for pupil dilation eg it is. Fundus camera, new preowned diagnostic equipment tags. The indirect ophthalmoscopy lenses and the slit lamp biomicroscopy lenses are. The lamp facilitates an examination of the anterior segment and posterior segment of the human eye, which includes the eyelid, sclera, conjunctiva, iris, natural crystalline lens, and cornea. Two prisms can bend light toward the principal axis acting like a crude converging lens but. Lenses lenses refract light in such a way that an image of the light source is formed. A short video using a digital camera attachemnt and volk lens slitlamp biomicroscopy. Get a multilens case free of charge if you are placing an order for a new volk lens. Volk double aspheric lens introduction volks 60d,78d and 90d fundus lenses have establishes slit lamp indirect ophthalmoscopy as a standard diagnostic procedure for comprehensive fundus evaluation. William david volk born december 16, 1956 in new york city, new york is a mobile game developer and publisher. Ocular instruments has no affiliation with volk optical and provides product statistics from published literature for.
At insight eye equipment, we guarantee each preowned unit is fullyrefurbished and provided with warranty. Lenses clean and dry instantly, completely free from smudges, haze, lint and water spots, restoring light transmission to maximum levels for optimum lens performance. The lens has provided excellent view of the peripheral retina. Perfectly corrected for field curvature, astigmatism, aberrations and coma. To make a telephone order, or to discuss any item purchase please call 01438 740823. He is the chief futurist of forward reality, a vr publisher. The volk 60d and 90d lenses were commercialized providing a variety of characteristics. Vmlcase keep your personal lens sets together with our multilens case. The indirect ophthalmoscopy lenses and the slit lamp biomicroscopy lenses are designed following a patented double aspheric design.
Volk optical adds slt lens to single use lens family. Quality of volkmanufactured optics deliver highresolution images in a sterile, onetimeuse design. Volk optical, mentor, oh, 78, and 90 d lenses are used. The pictor plus portable ophthalmic camera is a lightweight nonmydriatic camera you can take from the exam room to onlocation screenings, nursing home calls and everywhere in between. Volk1 single use lenses offer the convenience and sterility assurance of a onetimeuse disposable ophthalmic lens made with the highest quality volk lens optics. The italian designed deye portable ophthalmoscope allows you to take fundus images and video without the need of a slit lamp or dilating drops. Which of the following lens do you guys recommend and why. The pictor plus will shoot detailed high resolution images in daylight or darkness. Cleaning should be performed regularly to remove bodily fluids, dust and soil on the surface of the lens. Using a global network, designs for vision provides diagnostic and surgical products to a range of customers spanning across the healthcare sector. Unfortunately, however, there still seems to be a general impression that volk lenses are to be regarded as a special technique, unsuitable for more routine optometric work. I need to get volk lenses for lab and i was wondering if you guys could help me out.
The diopter value of a lens is a unit of refractive power of an optical lens, and is. By way of example using the table below, if a 60d lens were used to measure the size of the optic disc and the measurement made was 1. Miniaturized highresolution widefield contact lens for panretinal. Quality optics and performance to last a lifetimetm dan scott and. In general, highplus optical power lenses such as the 60, super66 which has a 1. Do not use micro fiber clothes as they will remove the. Primary application high magnification viewing of the posterior pole.
Telephoto lenses the term telephoto strictly applies to lenses having a front vertex length less than the focal length telephoto ratio less than one. In the volk spirit of improvement, our 3rd generation bio lenses were developed to. I was sorry i bought the volk 90d, 78d, and 20d during 1st year since i really liked the volk digital series and ended up switching to those lenses. Digital widefield lens any advice would be helpful. Jan 07, 2016 volk double aspheric lens introduction volk s 60d,78d and 90d fundus lenses have establishes slit lamp indirect ophthalmoscopy as a standard diagnostic procedure for comprehensive fundus evaluation.
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