| Customization: | Available |
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| Classification: | Imaging Diagnostic Equipment |
| Type: | Vision Field Analyzer |
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Standard Full Field White on White Perimetry
The VF-960 offer a wide range of test patterns and strategies, including T30-2, T24-2, T10-2 for glaucoma diagnosis and T-Macula for macula function assessment. In addition, special test patterns like driver feasibility, monocular/binocular social security disability are also included. For better detection of visual field loss caused by early stage glaucoma, points of T30-2 and T24-2 were cautiously configured on the most sensitive position of retinal nerve fiber bundle.
Precision Diagnosys
Strictly conforming to the newest perimetry standard of IMAING and PERIMETRY
SOCIETY, VF-960 simultaneously fulfill the needs for opthalmological and neurological uses.
Equipped with world-wide accepted 31.5 asb background illumination, incorporated with efficient HISA algorithm, comprehensive fixation control and age-related normal database, BIO-1300's test result is highly consistent with Goldmann standard perimeter. Its aspheric dome effectively shrinks its size, while ensuring the full field test range.
Front Projection, More Accurate Position & Intensity
As other mainstream high-end perimeters, VF-960 has adopted the advanced front projection structure: one independent light source, incorporated with rotating optical system, can project the uniform light spot on any position of the carefully prepared aspheric diffuse surface. The light spot has uniform intensity, despite of your observation angle.
Traditional hidden-led array perimeter uses hundreds of LEDs with fixed positions as stimulus points. It can't guarantee the exactly same stimulus intensity between different stimulus points, even been manually calibrated, for the parameter difference between LEDs and the thickness of their covering paint.
Low Light-declining LED, No Replacement & Calibration
LED light source has characteristics of high efficiency, low heat, long life and low light decay. Its radiating energy reduction is less than 20% after 30,000 hours of illumination. That is, if there is about 300 stimulus for each test, and each stimuli lasts for 200 ms, then, after 1.8 million tests, the stimulus intensity of VF-960 has attenuated less than 1 dB.
However, to ensure foolproof, VF-960 has built a light measuring sensor internally and any abnormal changes of the light intensity have been under control.
However, the competitive products use halogen lamp as light source. The halogen lamp is one type of incandescent with approximately 2,000-hour life cycle but over 50% lifetime's light attenuation. To keep accuracy, perimeters with halogen lamp need to be manually calibrated annually. In addition, replacement of halogen lamp in the life time is needed.
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COMFORTABLE PERIMETRY
The super-silent design of chin rest and fan free power system makes the test quiet and comfortable; The inclined LCD monitor guarantees the optimized operator view and operation angle; The embedded monitor and its glare shield effectively avoid the impacts of monitor rays on patients.
The chin rest control buttons on the operator's side produce the comfortable experience. Apart from L/R, U/D, the middle button automatically calibrates pupils to the center with the cooperation of eye tracking camera.
Compared with its competitor's 12.1" CRT, our 15" LCD provides higher display quality and more diagnostic information. Better display quality, more sensitive touch screen and virtual multi-language keyboard enable you an easy operation system
with one finger.
The ergonomic responder applies to all hands whatever the race, age and gender; Its elaborately selected tactile switch with 2.45 N action force has a life cycle of 1,000,000 times; The unique design brings us happy and straightforward response experience. Meanwhile, the switch action is easily perceived, even for old sluggish patients.
Optional: Our foot pedal responder is accessible to the disabled. Mechanical keyboard and external mouse are available as well.
ACCURATE PERIMETRY
Gaze Tracking
Minimize effects of unreliable response "Gaze Tracking" constantly monitors the pupil position and patient's fixation. System beeps to draw patient's attention when a fixation shift is detected. If fixation shift lasts for a while, system will stop test and inquire operator's intervention.
When occasional pupil shift appears, system automatically ignores the question and its corresponding response under the condition that the stimuli presents during pupil shift.
Blink Control
Never miss a point
VF-960's BLINK CONTROL helps avoid dry eyes and relax the patient for more focused subsequent test. With VF-960's BLINK CONTROL, stimuli during subject's blinking will never be worried since stimuli interrupted by the patient blinking will automatically be repeated in later test.
Blind Spot Monitor
VF-960 will present stimuli on blind spot periodically. If patient responses one, system will record it as blind spot monitor failure.
From stimuli presents to patient's response, there should be a reasonable time lag. If the patient response incredibly fast, system will record it as a FALSE POSITIVE as a reaction to patient's "Happy Trigger".
Blink spot monitor, FALSE NEGATIVE, FALSE POSITIVE and Gaze Tracking Curve could help you scientifically evaluate the reliability of test result.
SWAP for Earlier Glaucoma Detection
Researches suggest that Blue-Yellow ganglion cells are selectively damaged first in the early glaucoma. Short-Wavelength Automated Perimetry, or SWAP, is also known as Blue-Yellow perimetry. SWAP preferentially tests the blue cones and their ganglion cell connections by the means of using bright 100 cd/m2 yellow background to desensitizes the green and red cones, and evokes response of blue cones through carefully chosen 440nm blue stimuli.
Researches show that SWAP identified early glaucomatous visual field defects and progression in glaucomatous field loss much earlier than they could be detected by using standard white-on-white perimetry. It has been proven clinically that SWAP test result is highly consistent with RNFL loss caused by glaucoma.
VF-960 provides you with economic Blue-Yellow peremetry solution through T30-SWAP, T24-SWAP programs. Faciliated by its unique HISA-SWAP algorithm, BIO-1300 completes a Blue-Yellow perimetry as quick as the usual White-White perimetry does.
Standard Goldmann III for SWAP, More Accurate Damage
The competing product gets blue light from halogen lamp by narrowband filter, which is resulted from obviously insufficient stimuli intensity. Therefore, using the biggest V size light spot is obliged and reduces the accuracy of damage positioning.
VF-960 gets sufficient blue stimuli intensity through an independent blue LED. Compared with rival product Goldmann V solution, it operates Blue-Yellow with standard Goldmann III stimuli and thus guarantees more accurate damage positioning.
Injection Molding Diffuse Surface, Easy Maintenance
VF-960's diffuse surface is directly made by dedicated chemical etching on its injection mold. It can be cleaned with damp cloth if coated with dust. While the diffuse surface of competing products is made by painting, which is difficult to clean since the slightest mistake may lead to permanent damage of the painting diffuse
surface.
During kinetic test, light spot with different intensity slowly moves from periphery to the center. Patient makes response after seeing the light spot. The response position represents the border of visual field on this direction. By connecting all response points, the range of patient's visual field is depicted. The range of visual field varies by the intensity and size of light spot.
The kinetic perimetry can be applied to assessing the change of visual field and the field difference between eyes.
Quicker Perimetry
HISA-Heuristic Interactive Threshold Searching Algorithm
HISA forecasts initial threshold for new point through a complex mathematical model, which takes neighbouring tested results and same age normal values into consideration. Then unnecessary search will consequently be avoided. During test process, HISA intelligently skips those "undoubted" questions regarding the change of neighbouring point's value.
HISA is not likely to initiate all points but do a sample survey from some specific location. Subsequently, time will be saved for patients with serious reduction of sensitivity by skipping those high-sensitivity questions.
HISA will adjust the stimuli interval adaptively according to the patient's response lag. With HISA, young, quick patients will experience a happier, faster and more reliable test. And older, sluggish patients will not miss the response in long stimuli intervals.
HISA will evaluate the reliability of the tested points through a complex reliability function. Besides, HISA will automatically retest the suspected result.
HISA will … with other secret techniques and mathematical models, HISA is bound to be the most reliable and accurate threshold testing strategy.
Dedicated System, Safer Data, Easier Use
Instead of common x86 PC and its relative operating system, VF-960 adopt low power, high reliability, space compact industrial embed ARM computer and dedicated operating system. VF-960 is immune to common computer viruses, and its simple structure (no video card, no hard disk, no DVD drive) brings us incredible reliability.
More than 1000,000 tests can be stored in more than 32 GB solid state disk. High drop and unusual power off will not result any data loss.
We have elaborately designed VF-960's UI and operation process, which is easily accessible for a fresh operator without any instructions. Following the philosophy of "Simple is Best", we make attempt to simplify the operation. You will never click twice for one-click operation.
Glaucoma Progression Analysis
VF-960 can accurately differentiate clinically significant progression of visual field loss from random variability within a series of follow up tests, providing an advanced, reliable method to enhance the management of glaucoma. It really helps identify rapidly progressing, high-risk patients.
Automated Pupil Measurement
VF-960 can automatically measure patient's pupil diameter and print it in report. This benefits comprehension of the correlation between pupil size and perimetry result, then avoid wrong report interpretation with too small pupil size.
Universal Printout
Digits, grayscales, comparison, probability, pattern comparison and probability extensively reflect the information gathered during a perimetry test from different perspectives. The universal HFA-style printout makes it easier to Compare VF-960's results with other mainstream perimeters. Meanwhile, for paper writing, the universal or familiar graphs will be more accepted by reviewers.
In comparison with other graphs, pattern comparison / probability is more liable to correct the effects of media opacities, refractive error, and other generalized field loss by small pupils. It attempts to reflect only the change of fundus and resulting localized field loss, thus makes it more valuable for glaucoma diagnosis.
GHT-Glaucoma Hemifield Test
Comparing points within five zones in the superior and inferior hemifields, T30-2, T24-2, T30-SWAP and T24-SWAP provide a plain language analysis of the test results: Outside the Normal Limits, Within Normal Limits, Borderline, Abnormal High Sensitivity and General Reduction of Sensitivity.
The GHT result is valuable for glaucoma diagnosis, because the primary aim of GHT is to identify localized visual field loss occurring in a pattern typical of that seen in glaucoma.
Visual Field Index, Pattern Standard Deviation
VFI is a measure of the patient's overall visual function compared to an age-adjusted normal population. It has been proven that it is highly consistent with ganglion cells density and resulted visual function.
PSD is a measurement of the degree to which the shape of the patient's measured field departs from the normal, age-corrected reference field. A high PSD indicates an irregular hill and may be due either to variability in patient response or to actual field irregularities.
Regional Condensed Test
In typical 30-2 test, the distance between test points is 6 degrees, that is too wide. The damage could be missed in 30-2 test for some early glaucoma patient! Based on the clues you get from 30-2 report or other imaging report like fundus camera or OCT, you can select the density area manually by finger touch, the interval can be 1, 2 or 3 degrees. With Regional Condensed Test, doctor have bigger chance to confirm early glaucoma.
Multi-Language Support
We are aiming to serve the people worldwide. Chinese, English, French, Russian,
Arabian, Spanish, Portuguese are supported by VF-960. The embedded universal input method enables it to input operator's native language. The report will be
automatically generated into your native language according to your option.
Instant Networking & E-Report
Benefits from the supported DICOM protocol, VF-960 can be configured to be connected with any EMR system which conforms to the DICOM standard.
The units can be connected into LAN through RJ45 wire or WIFI. You can export the test report to PDF/JPG file, then access them through another Windows PC in the same LAN.
Technical Specifications
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Stimulus generation
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Front projection LED
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Max temporal range (degrees)
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90°
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Testing distance
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30cm
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Background illumination
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31.5 asb ( 10cd/m2 ), 100 cd/m2 *
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Stimulus size
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Goldmann III, Goldmann I-V *
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Stimulus intensity
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0.08 asb - 10, 000 asb (0-50 dB)
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| Stimulus duration | 200ms, Configurable |
| Test Strategy | |
| Threshold test library | T30-2, T24-2, T10-2, T-Macula, T-NS,T60-4, T30V-2*, T60-2 |
| Threshold strategy | Full Threshold, Fast Ladder, HISA, Standard Threshold |
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Screening test library
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S-40, S-64, S-76, S-80, S-Armaly, S-NS, SF-Armaly
S-60, SF-81, SF-120, SF-135, SF-246, SS-36, SS-64
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Screen strategy
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Two Zone, Three Zone, Quantify Defects
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Blue/Yellow perimetry*
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T24-SWAP, T30-SWAP
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Regional Condensed Test*
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RCS-30, RCS-24 (Micro Perimetry)
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Colored perimetry
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Blue Stimuli *
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Specialty test patterns *
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EM-M, EM-B
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Fixation monitor
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Heijl/Krakau blind spot monitor, Infrared video eye monitor,
Gaze tracking, Fixation tracking, Pupil measurement, Blink control
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Software features
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Visual Field Index
Glaucoma Hemifield Test
Single field analysis Serial field overview
HISA Analysis
Glaucoma Progression Analysis
Networking
SWAP Analysis*
Pupil Measurement
DICOM (optional)
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Responder
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Hand held, Foot pedal(optional)(for upper limb disabled) |
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Operating System
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OS
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Dedicated OS, immune for general computer viruses |
| Operator interface | 15'' LCD touch screen , Keyboard & Mouse(optional) |
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Data Storage
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≥64GB, More than 1, 000, 000 test results
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Data Backup
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Flash Disk(optional), Portable Hard Disk(optional), Networking
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Networking
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Ethernet & WIFI |
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Electrical Requirements
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Input: AC 100-240V 50~60 Hz Power consumption : 100 VA |
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Dimension/Weight
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56x49x60cm / 28 kg |
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