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Ophthalmic Products
MeiboVue Smartphone Meibographer
VisuDoc Ophthalmic Case Management App
QuikVue Smartphone Eye Imaging Adaptor
QuikVue Smartphone Eye Imaging Adaptor (Vet)
iFlo USB Heating Eye Mask
Portable Slit Lamp
Projection Perimeter IFA Series
Hidden LED Perimeter IVS Series
Optometry Products
Slit Lamp Microscope
Instrument Table VT-18H
Components
LidVue Eyelid Everter
Meibomian Gland Forcep
Features Spec Case Studies

Standard Full Field White on White Perimetry

The IFA series visual field analyzer 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 are cautiously configured on the most sensitive position of retinal nerve fiber bundle.


Regionally Condensed Stimuli Test


VisuScience IFA950/960 perimeter/visual field analyzer offer a unique function called regionally condensed stimuli test. It enables doctors to add more stimuli around each standard stimulus to increase the accuracy in detecting vision loss. 

As can be seen from the following test screenshot, the test is divided into 76 grids. Users can add more stimuli in each grid with density of Interval 1。/2。/3。options. 


Regionally Condensed Stimuli Test Application 1


In the superior paracentral visual field, the RCS report clearly demarcates a circumscribed paracentral small retinal nerve fiber–related scotoma corresponding to a previous splinter hemorrhage shown in the (inset) optic disc photograph (the optic disc is turned upside down).







Regionally Condensed Stimuli Test Application 2

For confirmed glaucoma patients, doctor need to see the visual field status both for macula and peripheral area to track the progression. Conventionally, this was done through one T30-2 test plus one T10-2 test. 

With RCS, this can be done with only one test of T30-2 + some densified area.

 


For detailed introduction, please click here to download file. 



How to Start RCS Test

RSC test can be easily launched from the home interface of IFA 950/960 perimeter. We offer RCS test for T-24 and T-30.




Precise Diagnosis


Strictly conforming to the newest perimetry standard of IMAGING and PERIMETRY SOCIETY, IFA series simultaneously fulfill the needs for ophthalmological and neurological uses. Equipped with world-wide accepted 31.5 asb background illumination and incorporated with efficient HISA algorithm, comprehensive fixation control and age-related normal database, IFA’s test result is highly consistent with Goldmann standard perimeter.

Its aspheric dome effectively shrinks its size, while ensuring the full field test range.



Low Light-declining LED

No Need for 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 means, 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 IFA has attenuated less than 1 dB. Furthermore, to ensure even more stable performance, IFA has built a light measuring sensor internally to detect any abnormal change in light intensity.






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.



Blink Control

Never miss a stimuli


IFA’s BLINK CONTROL helps patients avoid from dry eyes and relax them to stay focused in subsequent test. When IFA’s BLINK CONTROL is on, stimuli during patient’s blink will not be counted and will automatically be repeated in later test.






Kinetic Perimetry


Kinetic Perimetry is supported by IFA-960 as well. 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.



HISA-Heuristic Interactive Threshold Searching Algorithm


HISA forecasts initial threshold for new point through a complex mathematical model, which takes neighboring tested results and same age normal values into consideration. Then unnecessary search will consequently be avoided.  


HISA does 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.






Glaucoma Progression Analysis


IFA 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


IFA can automatically measure patient’s pupil diameter and print it in report. This benefits comprehension of the correlation between pupil size and perimetry result to avoid wrong report interpretation with too small pupil size.



Click here to view comparative report between IFA960 and HFA750i.


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Model No.
IFA-900 
IFA-950
IFA-960

Stimulus Generation

Front Projection LED



Max Temporal Range

90°



Testing Distance

30cm



Background Illumination

31.5asb (10cd/m2)

315asb (100cd/m2)


Stimulus Size

Goldmann III 

Goldmann I-V


Stimulus Intensity

0.08asb ~ 10,000asb (0 ~ 50dB)



Stimulus Duration

200ms, configurable








Test Strategy




Threshold Test Library

T10-2, T24-2, T30-2, T-Macula, T60-4, T-NS(Nasal Step)



Threshold Strategy

Full Threshold, Fast Ladder, HISA, Standard Threshold



Screening Test Library

S-40, S-64, S-76, S80, S-Armaly, S-60, S-NS(Nasal Step), SF-81, SF-120, SF-135


Screen Strategy

Two Zone, Three Zone, Qualified Defect

Blue/Yellow Perimetry

N/A 

T24-SWAP, T30-SWAP


Custom Testing

N/A 

Customized Program

Colored Perimetry

N/A 

Blue Stimuli
Blue Stimuli,
Red Stimuli, 
Green Stimuli


Specialty Test Patterns

N/A 

Social Security Disablility, Monoculuar, Binocular, Superior 36, Superior 64

Fixation Monitor

Heijl/Krakau blind spot monitor, Infrared video eye monitor, Gaze tracking, Fixation tracking, Pupil measurement, Blink control




Software Features

Visual Field Index, Glaucoma Hemifield Test(GHT), Single field analysis,Serial field overview, HISA Analysis

Available in IFA-950/IFA-960 only:

SWAP analysis, Networking,

Glaucoma Progression Analysis, DICOM



Responser

Hand held, Foot pedal (Optional)



Pupil Diameter

2.0 ~ 8.0mm (0.1mm step)







Built-in System





Operating System

Dedicated OS (immune for general computer viruses)

Operator Interface

15’’ LCD touch screen, Keyboard & Mouse(Option)



Data Storage

≥32GB, More than 1,000,000 test results

Data Backup

Flash Disk, Networking



Networking

Ethernet

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The following are some test reports samples from VisuScience periemter.
EN FR ES PT NL
This is a T30-2 visual field test.
Ceci est un test de champ visuel T30-2.
Esta es una prueba de campo visual T30-2.
Este é um teste de campo visual T30-2.
Dit is een T30-2 gezichtsveldtest.
EN FR ES PT NL
This is a Kinetic test for visual field.
Ceci est un test cinétique pour le champ visuel.
Esta es una prueba cinética para el campo visual.
Este é um teste cinético para o campo visual.
Dit is een kinetische test voor gezichtsveld.
EN FR ES PT NL
This is a horizontal visual field test for driver license test.
Il s'agit d'un test de champ visuel horizontal pour le test de permis de conduire.
Esta es una prueba de campo visual horizontal para la prueba de licencia de conducir.
Este é um teste de campo visual horizontal para teste de carteira de motorista.
Dit is een horizontale gezichtsveldtest voor het testen van het rijbewijs.
EN FR ES PT NL
This is a test report of visual field GPA analysis including VFI analysis.
Il s'agit d'un rapport de test d'analyse GPA du champ visuel, y compris l'analyse VFI.
Este es un informe de prueba del análisis de GPA del campo visual que incluye el análisis de VFI.
Este é um relatório de teste da análise GPA do campo visual, incluindo análise VFI.
Dit is een testrapport van gezichtsveld GPA-analyse inclusief VFI-analyse.
EN FR ES PT NL
This is a test report of visual field GPA analysis including VFI analysis.
Il s'agit d'un rapport de test d'analyse GPA du champ visuel, y compris l'analyse VFI.
Este es un informe de prueba del análisis de GPA del campo visual que incluye el análisis de VFI.
Este é um relatório de teste da análise GPA do campo visual, incluindo análise VFI.
Dit is een testrapport van gezichtsveld GPA-analyse inclusief VFI-analyse.
EN FR ES PT NL
This is a Esterman Binocular visual field test report sample.
Ceci est un exemple de rapport de test de champ visuel binoculaire Esterman.
Esta es una muestra de informe de prueba de campo visual binocular de Esterman.
Esta é uma amostra do relatório de teste de campo visual binocular da Esterman.
Dit is een voorbeeld van een Esterman verrekijker gezichtsveldtestrapport.
EN FR ES PT NL
This is a test report of blue on yellow SWAP test done by VisuScience perimeter/visual field analyzer.
Il s'agit d'un rapport de test de test SWAP bleu sur jaune effectué par l'analyseur de périmètre / champ visuel VisuScience.
Este es un informe de prueba de la prueba SWAP azul sobre amarillo realizada por el analizador de campo visual / perímetro VisuScience.
Este é um relatório de teste de teste SWAP de azul sobre amarelo feito pelo analisador de perímetro / campo visual VisuScience.
Dit is een testrapport van blauw op geel SWAP-test uitgevoerd door VisuScience perimeter / gezichtsveldanalysator.
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VisuScience Meditech Co.,Ltd.
Add: Room 501, Ruiyun 5 No. 99 Furongzhongsan Rd.
Wuxi 214192, Jiangsu Province, China
Tel:+86-0510-85757880 | Fax:+86-0510-85757880
E-mail:info@visuscience.com

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