Wavefront Technology - Guarantee Accurate Measurement
The ARK-7800 series auto refractometer/keratometer applied advanced wavefront technology to measure patient’s refraction status. With Hartmann-Shack sensor and uniquely designed optical system, ARK-7800A/B can give quick examination and deliver accurate measuring result to the optician and ophthalmologists based on aberration analysis.
Uniquely Designed Optical System
The special optical system and algorithm incorporated in the ARK-7800A/B enable it to measure high myopia eyes (up to -30.00D), mild to medium cataract eyes and patients wearing IOL. Unlike the mire technology used in traditional autorefractometer, the light from ARK-7800A/B can penetrate the cloudy lens and reaches the retina making the measurement possible.
Auto Tracking and Measuring
When the device is operated in half-focus status, the advanced sensor inside the device with track the pupil center automatically in 3D mechanism to find the best focusing position. Once it’s focused, the refraction is measured automatically.
Manual Focus Operation Guide
When the pupil is out of focus during manual operation, the screen will show arrows to guide the operator to move the joystick to reach focus status.
Touch and Tilting Color Screen Display
ARK-7800A/B offers a high resolution 7” touch and tilting color screen to make the operation being user friendly to the operator. The operator can tilt the screen up to 15 degrees for easy review of the contents on the screen.
Quick Measuring Mode
For children patient and patients have nystagmus whose eye balls moves quickly and hard to fix for a short time, ARK-7800A/B offers a quick measuring mode which can capture the refraction information in very short time.
Auto Cutting Printer
The printer on the auto refractometer has the auto cutting function. It cuts paper automatically when finish printing. This saves the trouble of operate to tear the paper by themselves.
|Model No.||ARK 7800A|
Hartmann-Shack wavefront sensor
Continuous keratometry & refractometry
Contact lens base curve measurement
Auto / Manual
Auto / Manual
0.0, 12.0, 13.75, 15.0
-30.00D ~ +25.00D
(When VD=12mm) (0.01D / 0.06D / 0.12D / 0.25D step)
0.00D ~ ±10.00D (0.06D / 0.12D / 0.25D step)
1° ~ 180° (1° step)
10 ~ 86mm
Minimum Pupil Diameter
Radius of Curvature
5.0 ~ 10.0mm (0.01mm step)
33.00D ~ 67.00D
(When corneal equivalent refractive index is 1.3375)
0.00D ~ 15.00D (0.06D / 0.12D / 0.25D step)
1 ~ 180° ( 1° step)
2.0 ~ 8.0mm (0.1mm step)
Memory of Data
10 measurements for each eye
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