The HRK9800 auto Ref/Keratometer applied advanced wavefront technology to measure patient's refraction status. With Hartmann-Shack sensor and uniquely designed optical system, HRK9800 can give quick examination and deliver accurate measuring result to the optician and ophthalmologists based on aberration analysis.
The special optical system and algorithm incorporated in the HRK9800 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 auto refractometer, the light from HRK9800 can penetrate the cloudy lens and reaches the retina making the measurement possible.
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.
When the focusing mark is moved to the middle of the pupil, HRK9800 will move up and down automatically to track the pupil center. When it locates the pupil center, it will measure automatically in auto measuring mode.
HRK9800 adopt two-dot alignment technology which is an objective focusing method. When the two dots are aligned horizontally, it indicates that the measurement is in focus. This increases the focusing accuracy in comparison with subjective observation by the operator's eyes.When in focus, the device will measure automatically in auto mode.
For children patient and patients have nystagmus whose eye balls moves quickly and hard to fix for a short time, HRK9800 offers a quick measuring mode which can capture the refraction information in very short time.
The own developed motor used to control the chin rest up and down generates very low noise. That makes the chin rest move smoothly and offer great comfort to the patient.
There is 3 groups of data stored in each measurement.
The maximum number is 10 groups to be stored at one time.
HRK9800 offers a high resolution 7" touch tiltable screen to make the operation being user friendly. The operator can tilt the screen up to 20 degrees for easy review.
HRK9800 can measure the pupil diameter from 2mm to 8mm.
