IMOvifa™ is a new style of perimeter
The concept of “IMOvifa™” is friendly to people, easy to use, compact design, also, aims for more accurate, more speedy and highly reliable visual field inspection.
“Original program” and “original examination sequence” which achieved both accuracy and speed
Original program “AIZE” and “AIZE-Rapid”
Increase the inspection speed by increasing the accuracy of the predicted value
The original program “AIZE (Ambient Interactive ZEST: aɪz)” for determining the retina sensitivity threshold value,
Bayesian estimation determines the stimulus intensity for each examination trial and determines the final retinal sensitivity threshold using the maximum likelihood method.
By reflecting the subject’s response at each examination point to the surrounding examination points adjacent to each other, advance prediction accuracy can be improved,
Reduce the number of trials until threshold determination. “AIZE – Rapid” is strongly reflected on the adjacent points and the inspection speed
I will let you up.
Retinal sensitivity threshold determination with AIZE and AIZE-Rapid
Original test sequence “24 plus”
# Significant improvement in inspection efficiency
# Automatic pupil tracking
Individual monitors of the pupils of both eyes during examination
During the examination, the pupils of the left and right eyes are monitored with a near infrared camera, the position of stimuli is automatically corrected by tracking the fixation, and the accuracy of the examination is guaranteed.
It is easy to use because it does not require a darkroom, and it is possible to perform highly reliable inspections
Indication of tracking correctness for each measuring point
The reliability is displayed for each measurement point by automatically detecting information (correctness of tracking) unknown only with the gaze information (it can be measured again in correspondence with the time shift mode)
Defect Curve display
Total deviation displayed
Easy to understand by displaying total difficulty deviations
Accurate and speedy visual field inspection is possible even though it is compact
IMOvifa Data
| Peripheral range (distance) | 30°( 1m) |
|---|---|
| Stimulus intensity | 0-10000 [asb] |
| Backgraound illumination | 31.4 [asb] |
| Stimulus size | Goldmann Ⅰ,Ⅱ,Ⅲ,Ⅳ,Ⅴ ( or optional varius size ) |
| Stimulus duration | 200 [ms] |
| Stimulus generation | Projection on LCD |
| Test methods | Standard white-onwhite perimetry, SAP |
| Threshold test library | 30-2, 24-2, 10-2 24plus(1-2), 24plus(1) |
| Threshold test strategies | AIZE, AIZE-Rapid, Full-threshold AIZE EX, AIZE-Rapid EX |
| Fixation control | Heijl-Krakau blind spot monitor Gaze tracking, Video eye monitor |
| Correction range | Spherical power -3 ~ +3 [D] -15 ~ +9 [D]( with attachment lens) *Attachment lens (+6.0, -3.0, -6.0, -9.0, -12.0 [D]) Astigmatic power with attachment lens (-1.0, -1.5, -2.0, -2.5, -3.0 [D]) |
| Pupillary distance | 52 – 78 [mm] |
| Measures(WxDxH) | 200 x 120 x 180 [mm] |
| Weight | 0.85 [kg] |
| “Optical system of visual target presentation” |
Wavelength 420 ~ 700 [nm] Display Color 2560 x 1440 Transmissive type LCD |
| Monitoring of fixation | Wavelength 950 [nm] Monocrome (640 x 480) 1/4inch COMS sensor |
| External observation camera | Color (640 x 480) 1/4inch COMS sensor |
| Networking | Ethernet |