Product Description
Handheld Auto Refractometer Opthalmic Vision Screener
Description
This is an innovative wavefront refractometer that precisely measures refractive errors of patients from 6 months old through adults within just seconds. The device is designed and engineered to be handy and user-friendly with one-button operation. With the short working distance, the device is extremely easy-to-focus.
Features
1.Fashionable and compact design.
2. Advanced refraction measurement technology, image analysis more entirely, enable the reliable measurement result and optimize date consistency.
3.Automatic identification the best measurement position for keratometry, avoid the operating error and enable the accurate Keratometry measurement.
4. IOL function available.
5. The touch screen provides friendly user interface, and make the operation more convenient.
Product Parameters
|
SPECIFICATIONS
|
|
Sphere range
|
-10.0D ~ +10.0D, step 0.25D
|
|
Cylinder range
|
-5.0D ~ +5.0D, step 0.25D
|
|
Axis of astigmatism range
|
1° ~ 180°, 1°
|
|
Data acquisition time
|
<1s / eye
|
|
Iris imaging
|
Yes
|
|
Connections
|
USB, Wifi, Bluetooth; easy data transfer to pc or printer
|
|
Print to
|
Bluetooth printer (optional)
|
|
Dimensions
|
203mm x 110mm x 50mm
|
Company Advantages in Logistics and Foreign Exchange Collection
Logistics
- Global Reach and Network: Our company has established an extensive logistics network that spans across the globe. We collaborate with leading international shipping companies and freight forwarders, enabling us to deliver the products to customers in many countries and regions. This far - reaching network ensures that no matter where our clients are located, they can receive their orders in a timely manner.
- Efficient Shipping Options: We offer a variety of shipping methods to meet different customer needs. For urgent orders, we provide express shipping services, such as DHL, FedEx, and UPS, which can typically deliver the products within [7] business days. For larger orders or those with less strict time requirements, we also have cost - effective sea freight options. Our logistics team carefully assesses each order to recommend the most suitable shipping method, balancing speed and cost.
- Real - time Tracking: To keep our customers informed, we provide real - time tracking information for all shipments. Once the order is dispatched, customers can easily monitor the progress of their package from the moment it leaves our warehouse until it reaches their doorstep. This transparency helps our clients plan their inventory and operations more effectively.
- Warehousing and Inventory Management: We maintain well - equipped warehouses strategically located in key regions. These warehouses are managed with state - of - the - art inventory management systems. This ensures that we always have sufficient stock of the Adult Anesthesia Laryngoscope Sets to meet sudden increases in demand. Moreover, our efficient warehousing operations enable quick order processing and dispatch, reducing lead times significantly.
Foreign Exchange Collection
- Flexible Payment Options: We understand the diverse needs of our international customers when it comes to payment. Therefore, we offer a wide range of payment methods, including T/T (Telegraphic Transfer), L/C (Letter of Credit), PayPal. This flexibility allows our customers to choose the payment method that is most convenient and suitable for their business operations, facilitating smooth transactions.
- Efficient and Secure Collection Process: Our finance team is highly experienced in handling foreign exchange collection. We have established reliable relationships with major international banks, ensuring that the payment collection process is both efficient and secure. When a payment is made, we can usually confirm receipt within [1] business days. We also comply with all international financial regulations and anti - money - laundering laws, providing our customers with peace of mind.
- Exchange Rate Optimization: Given the volatility of foreign exchange rates, we have a dedicated team monitoring the market. We use various financial tools and strategies to optimize exchange rates for our customers. This means that when customers make payments, we strive to ensure that they get the best value for their money, minimizing the impact of exchange rate fluctuations on their costs.
- Professional Invoice and Documentation: To facilitate the payment process, we provide professional and accurate invoices and all necessary documentation. Our invoices clearly state the product details, quantity, price, and any applicable taxes or fees. In addition, for L/C transactions, we ensure that all documents are prepared in strict accordance with the terms and conditions of the letter of credit, reducing the risk of payment disputes.
FAQ
1. General Product Information
Q1: What is a Handheld Auto Refractometer Ophthalmic Vision Screener?
A1: A Handheld Auto Refractometer Ophthalmic Vision Screener is a compact, portable device designed to measure a person's refractive error quickly and accurately. It uses advanced optical and electronic technologies to analyze how light rays are bent as they pass through the eye, determining the appropriate corrective lens prescription for conditions like myopia, hyperopia, and astigmatism. This device is especially useful for initial vision screenings in various settings, from schools and community health centers to hospitals.
Q2: How does it differ from a traditional, stationary auto - refractometer?
A2: Portability: The most significant difference is its portability. A traditional auto - refractometer is usually a large, fixed - position device installed in a dedicated examination room. In contrast, the handheld version can be easily carried around, allowing for on - the - go vision screenings in remote areas, mobile clinics, or during outreach programs.
Functionality: While both devices measure refractive error, traditional ones may offer more advanced features and higher precision for in - depth clinical examinations. Handheld auto - refractometers, however, are designed to provide quick and reliable screening results, which can be sufficient for initial assessments. They are also often more user - friendly for non - specialized operators.
Size and Setup: Handheld models are much smaller and require minimal setup. Traditional auto - refractometers may need to be calibrated and integrated with other diagnostic equipment, which can be time - consuming and require a more controlled environment.
Q3: What are the key components of this device?
A3:
- Optical System: It includes a light - emitting source that projects light into the eye and an optical sensor to detect the reflected light. The optical system is designed to accurately measure the way the eye refracts light, which is crucial for determining refractive error.
- Microprocessor: This component processes the data received from the optical sensor. It uses complex algorithms to analyze the light patterns and calculate the refractive power of the eye, providing the spherical, cylindrical, and axis values for the prescription.
- Display: A clear and easy - to - read display shows the measurement results. Some models may also have additional features like data storage and recall, where previous measurement results can be saved and retrieved for comparison.
- Power Source: Usually powered by batteries, ensuring continuous operation during screenings without the need for a constant electrical outlet.
2. Product Performance
Q1: How accurate are the measurements of the handheld auto - refractometer?
A1: Modern handheld auto - refractometers offer a high level of accuracy. They can typically measure refractive error within a margin of error of approximately ±0.25 to ±0.50 diopters compared to more sophisticated, stationary models. However, factors such as patient cooperation, the presence of eye diseases, or abnormal eye movements can slightly affect the accuracy. To obtain the most accurate results, it's important to follow the proper operating procedures and take multiple measurements.
Q2: How quickly can it provide a measurement?
A2: The device can provide a measurement in a relatively short time, usually within a few seconds. Once the device is properly positioned in front of the patient's eye and the measurement is initiated, it takes about 2 - 5 seconds to analyze the light refraction and display the results. This quick measurement time is beneficial for conducting mass vision screenings efficiently.
Q3: Can it be used for all age groups?
A3: Yes, the handheld auto - refractometer can be used for a wide range of age groups. However, when testing young children or uncooperative patients, it may require some additional patience and techniques. For infants and very young children, the operator may need to use distraction methods to keep the child's eyes open and focused. In general, the device is designed to adapt to the different eye characteristics of various age groups, from pediatric to geriatric patients.
3. Usage and Operation
Q1: Is the device easy to operate?
A1: Yes, it is designed to be user - friendly. The basic operation involves turning on the device, positioning it in front of the patient's eye at the recommended distance (usually a few centimeters), and pressing a button to initiate the measurement. The device often has visual or audio cues to guide the operator, such as indicating when the eye is properly aligned. With minimal training, healthcare workers, teachers (for school - based screenings), and even trained volunteers can operate the device effectively.
Q2: What is the proper way to position the patient for an accurate measurement?
A2: The patient should be seated comfortably with their head upright and stable. The operator should hold the handheld auto - refractometer at the correct distance from the patient's eye, usually as indicated by markings on the device. The patient is then instructed to look straight ahead at a fixed target within the device. It's important to ensure that the patient's eye is centered within the viewfinder of the device and that there are no obstructions, such as long hair or glasses frames.
Q3: Can the measurement data be stored and transferred?
A3: Many handheld auto - refractometers come with built - in data storage capabilities. They can store multiple patient records, including the date, time, and measurement results for each eye. Some models allow for the input of additional patient information, such as name, age, and gender. The stored data can usually be transferred to a computer or other external device for further analysis, record - keeping, or integration with electronic health records. This is often done via USB, Bluetooth, or other data transfer methods.
4. Maintenance and Calibration
Q1: How often does the handheld auto - refractometer need calibration?
A1: Calibration frequency depends on the manufacturer's recommendations, but generally, it should be calibrated at least once a year. If the device is used frequently or in a high - volume screening environment, more frequent calibration (e.g., every 6 months) may be necessary. Calibration ensures that the optical system and the microprocessor are functioning accurately, resulting in reliable refractive error measurements.
Q2: What kind of maintenance does the device require?
A2: Regular maintenance includes keeping the optical components clean. The lens or aperture through which light enters and exits the device should be wiped gently with a soft, lint - free cloth to remove any dust, smudges, or fingerprints. The battery should be checked regularly, and if it's a rechargeable battery, it should be charged as needed. Additionally, the device's exterior should be kept clean and free from dirt and debris.
Q3: What should I do if the device shows an error message?
A3: If the device shows an error message, first refer to the user manual. The manual usually contains a troubleshooting section that can help identify the cause of the error. Common error causes include improper patient positioning, dirty optical components, low battery, or issues with the internal sensor. If the problem persists after following the troubleshooting steps in the manual, contact the manufacturer's customer support or a qualified service technician for further assistance.
5. Compatibility and Accessories
Q1: Are there any accessories available for the handheld auto - refractometer?
A1: Yes, there are several accessories available. Some models may come with a protective carrying case to safeguard the device during transportation. There may also be additional lenses or attachments for specific applications, such as adjusting for different eye conditions or improving the accuracy of measurements in certain situations. Some manufacturers offer software upgrades or add - on features that can enhance the device's functionality, such as advanced data analysis tools.
Q2: Can the device be integrated with other ophthalmic equipment?
A2: Some advanced handheld auto - refractometers can be integrated with other ophthalmic equipment or electronic health record systems. This integration allows for seamless transfer of refractive error data to other diagnostic devices or patient records, facilitating a more comprehensive eye examination and patient management process. For example, the data can be transferred to a digital charting system used in a hospital or clinic.
Audited Supplier 
){kind=link}