VisualTech (Shanghai) Corporation, commonly referred to as VisualTech, is a professional supplier of ophthalmic equipment, optometry and ophthalmic medical instruments, as well as optical lab equipment for the eyeglasses. The company is located in the bustling metropolis of Shanghai, China. VisualTech provides comprehensive global coverage, responding to the ever-changing needs of the times. The company has adapted to the transition of traditional offline exhibition models to convenient & efficient online shopping methods. Wherever the need arises, VisualTech is there to provide its superior products and exceptional customer service.
Why Choose Us?
Professional Team
VisualTech (Shanghai) Corporation, commonly referred to as VisualTech, is a professional supplier of ophthalmic equipment, optometry and ophthalmic medical instruments, as well as optical lab equipment for the eyeglasses.
Wide Range of Products
VisualTech offers a diverse range of products to the ophthalmic industry. Includes combined tables, autorefractor, digital lensmeter, phoropter, visual charts, trial lens sets, trial frames, ophthalmic slit lamp, non-contact tonometer, fundus camera, retinoscope & ophthalmoscope, perimeter, AB scan, Biometer, dry-eye analyzer etc.
Global Shipping
VisualTech provides comprehensive global coverage, responding to the ever-changing needs of the times. The company has adapted to the transition of traditional offline exhibition models to convenient & efficient online shopping methods. Wherever the need arises, VisualTech is there to provide its superior products and exceptional customer service.
Quality Control
VisualTech is committed to innovative self-development, constantly striving to lead the industry while adhering to the highest standards of quality. The company provides customers with high-quality, innovative and trustworthy services.
Auto Refractometer with Keratometer
An auto refractometer is a diagnostic machine commonly used by eye doctors to measure the refractive error of the eye.
Big Screen Autorefractor Keratometer
FA-100K is one of the top products among the new fully autorefractor keratometers.
9 Inch Touch Screen Auto Refractometer
RM-160 and RK160 are equipped with a powerful processor, which is combined with the Hartmann-Shack wavefront technology. This technology is designed to measure the optical aberrations of the eye, thereby providing accurate results.
Auto refractometer is an instrument that helps in the automated assessment of refraction. This is an alternative method of finding out the refraction error in contrast to the conventional refractive technique. The procedure is called refractometry or optometry. The auto-refractors can be of various types depending on the underlying principle. The various indications of performing optometry are myopia, hyperopia, astigmatism, presbyopia, spectacle prescription, and contact lens prescription, which serve as a starting point for subjective refraction for ophthalmologists and optometrists in pediatric refraction and people with a disability requiring spectacles.
How Does 9 Inch Touch Screen Auto Refractometer Work
The 9 inch touch screen auto refractometer shines light into the eye, measuring how it changes as it bounces off the back of the eye (the retina). Then, the patient is shown an image that moves in and out of focus. As reflections are made, several measurements determine when the eye is properly focused. These final figures determine the level of vision correction needed. Unlike many conventional refraction diagnostic devices, some 9 inch touch screen auto refractometers utilizes a unique wavefront technology algorithm based wavefront sensor, which analyzes many focal spots of a light wavefront. It can measure not just the basic refraction error of a patient, but to obtain a spatially resolved refraction map of the wavefront.
What Is the Normal Value of 9 Inch Touch Screen Auto Refractometer
Common vision problems such as myopia (nearsightedness) or hyperopia (farsightedness) are the result of refractive error. 9 inch touch screen auto refractometers are used to measure the degree of refractive error in the eye, and are suited well toward applications such as differentiating corneal from lenticular aberrations, and assessing pre-and-post refractive surgery patients.
The patient focuses their vision on a fixation target such as a hot-air balloon floating over land. Like many ophthalmology instruments, they have spherical and cylindrical measurement ranges of -30 to +25D/±10D respectively.
What Is the Advantage of 9 Inch Touch Screen Auto Refractometer
9 inch touch screen auto refractometer provides accurate and objective measurements of the eye's refractive error. It is an advantage. This allows optometrists to determine the appropriate prescription for glasses or contact lenses. This ensures clear vision for the patient.
9 inch touch screen auto refractometers use advanced technology to measure the eye's focusing ability. They calculate the refractive index, providing precise measurements.
These measurements can help diagnose and treat vision problems. Additionally, 9 inch touch screen auto refractometers are easy to use and provide quick results. They are valuable tools in eye clinics and optical shops. They are used for eye examinations and prescription eyewear fittings.
What Is the Purpose of the 9 Inch Touch Screen Auto Refractometer
The 9 inch touch screen auto refractometer is a well-established instrument that is used for measuring the water content of liquids. It measures the refractive index of the liquid, which changes according to the moisture content.
Moisture-related energy absorption of near-infrared light can be used for measuring the moisture content of solids, liquids, and gases. At a wavelength of 1.94 μm, energy absorption due to moisture is high, whereas at 1.7 μm, absorption due to moisture is zero. Therefore, measuring absorption at both 1.94 and 1.7 μm allows absorption due to components in the material other than water to be compensated for, and the resulting measurement is directly related to energy content.
9 inch touch screen auto refractometer, or automated refractor, is a computer-controlled device that is used during an eye exam to check how the eye processes light. 9 inch touch screen auto refractometers measure refractive error in just seconds and automatically determines a person's refractive error.
9 inch touch screen auto refractometers are used by eye doctors to help determine whether a patient needs prescription eyewear or contact lenses. Modern 9 inch touch screen auto refractometers are extremely accurate and easy to use. They help save time during eye examinations by providing the doctor with a very good starting point for a prescription.
Testing with an 9 inch touch screen auto refractometer takes just a few seconds and is painless. These devices are extremely useful when dealing with children who have a hard time sitting still, as well as for adults with developmental disabilities that have difficulty communicating with the doctor during an eye exam.
9 inch touch screen auto refractometer testing is extremely simple. As a patient, you rest your chin on a chin rest and look at an image inside the 9 inch touch screen auto refractometer machine, one eye at a time. The image moves in and out of focus until readings determine that the image is precisely on the retina. The machine takes several detailed readings, which it averages out to form a prescription. The entire testing process is automatic so you are not required to determine when your eye is properly focused – your doctor gets this feedback from the machine.
How Accurate Is 9 Inch Touch Screen Auto Refractometer
9 inch touch screen auto refractometers are digital instruments that measure the eye's refractive errors. They use optical technology to accurately gauge how light is focused on a person's retina. Because of their clinical accuracy, 9 inch touch screen auto refractometers are commonly used by optometrists and ophthalmologists across the world in order to provide an accurate prescription for eyeglasses and contact lenses.
The accuracy of 9 inch touch screen auto refractometers has been repeatedly proven through multiple studies over the years, with some sources claiming that it can be more accurate than manual refraction tests done by a qualified practitioner. 9 inch touch screen auto refractometers were able to determine refractive errors within 0.2 diopters of the accepted standard, and that they even exceeded human error standards in certain cases. This makes them much more reliable than other methods used to test refractive errors such as corneal topography or retinoscopy.
9 inch touch screen auto refractometers have been shown to be very effective at detecting certain types of eye diseases such as myopia or astigmatism. 9 inch touch screen auto refractometer technology can detect subtle changes in a patient's vision over time and alert doctors if there have been any significant changes since their last visit. This makes them very useful tools when it comes to early detection and providing timely treatment for various types of eye conditions.
9 inch touch screen auto refractometers provide tremendous benefits for both patients and healthcare providers alike due to their accuracy and ability to detect subtle changes in a patient's eyesight quickly and effectively.
• 9.0 inch colour touch screen
• Auto tracking(Y axis)
• Motorized chin rest and joystick
• Built-in thermal printer
• One key lock function
• Data transferred facility available to Sight Tester/ Phoropter.
The numbers on your spectacle prescription are shown for your right eye (indicated as RE or sometimes OD – the Latin for oculus dexter, meaning right eye) and your left eye (LE or OS – oculus sinister). Most optometrists use RE and LE but you will sometimes come across OD/OS in eye hospitals and some ophthalmologist's practices.
If there is only one number, this means the eye is spherical (the same curve all over) and has no astigmatism correction:
RE: + 4.74DS
The unit of measurement is called the dioptre (D) and in this case, DS means dioptre sphere.
The plus (+) sign in front of the number means you are long-sighted. Your glasses lenses will be thicker in the centre and thinner at the edges and make things look bigger (including your eyes).
A minus sign means you are myopic (short-sighted). Your glasses lenses will be thicker at the edges and thinner in the centre and will make things look smaller (including your eyes).
The following prescription is for a short-sighted eye with no astigmatism correction:
LE: – 7.50 DS
Components of 9 Inch Touch Screen Auto Refractometer
The Auto refractometer has three main components: an infrared light source, a fixation target and a Badal lens system.
● Infrared light source: An infrared light source with a frequency of around 800-900nm is used in 9 inch touch screen auto refractometers, as it allows good ocular transmission at the sclera. This light is invisible to the human eye, so there is no discomfort to patient or any effect on pupil diameter or accommodation response.
● Fixation target: Most 9 inch touch screen auto refractometers use a 'fogging' target to relax accommodation.' Fogging' targets range from simple pictures to scenic fixation charts for optimal results making fixation easier.
● Badal lens system: Most 9 inch touch screen auto refractometers use an automated Badal optical system to determine the refractive state of the eye. In an 9 inch touch screen auto refractometer, an infrared light source is projected via a beam splitter and the Badal lens system to form the optimal focus of the slit image on the retina. The reflection of the slit image passes out via the beam splitter to reach the light sensor.
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Hot Tags: 9 inch touch screen auto refractometer, China 9 inch touch screen auto refractometer manufacturers, suppliers, factory
Specifications:
1. VD Range: 0.0, 12.0, 13.75 and 15.0
2. Sphere Range：-20.00D~+20.00D (VD=12mm,0.01 ,0.06,0.12,0.25 Increments)
3. Cylinder Range:0.00D~土10.00D(0.06 ,0.12,0.25 Increments)
4. PD: 10-86mm
5. Mini Pupil Size: 2.0mm
6. Average Measurement Time :＜0.5 Sec.
7. Pupil Distance:2.00-8.00mm
8. Max Brightness: ＜30uw (Safety Assure)
9. Refractive Power: 33.00D~67.00D (At a corneal equivalent refraction of 1.3375)
10. Cylindrical Power: 0.00D~-15.00D (0.06D/0. 12D/0.25D Increments)
11. Date Save: 10 Group Left/Right Eye
12. Axis：1°~180°
13. Target：Auto Fog
14. Monitor：9 Inch TFT Touch Screen (Flip)
15. Printer: 57mm Width, Auto Cutting thermal printer
16. Power: AC 100~250V,50/60Hz, Wide Voltage
17. Dimension: 526(L)*268(W)*468(H)mm
18. Net Weight:22Kgs
19. Gross Weight:26 .5Kgs
20. Packing: 680(L) X 400(W) X640(H)mm
