An automatic objective refractor is used by eye care professionals to determine a patient's refractive error so they can calculate the prescription they will need for glasses or contact lenses. Some refractors on the market today also provide visual acuity capabilities, which allows eye doctors to determine how sharp a patient's vision is as well. Having both technologies in one device can help make eye exams faster for both patients and practitioners.
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| Company | NIDEK | NIDEK |
| Item | ARK-F Auto Ref/Keratometer and AR-F Auto Refractometer | ARK-1s/1a/1 Auto Ref/Keratometer and AR-1s/1a/1 Auto Refractometer |
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| Description | The ARK-F/AR-F features fully-automatic measurement. Simply by placing the chin on the chinrest, the new NIDEK eye detection camera automatically detects the position of the eyes and measurement starts without pressing any button. Gentle voice | The ARK-1/AR-1 series speak for themselves, surpassing a conventional auto ref/keratometer and auto refractometer with technologically enchanted functions generating greater accuracy and greater clinical information. |
| Features | Remarkably easy workflow through fully-automatic measurement
Simply by placing the chin on the chinrest, NIDEK eye detection camera automatically detects the position of the eyes and measurement starts without pressing any button. Gentle voice guidance facilitates smooth measurement for any operator.
Selectable and intuitive manual operation
Manual measurement using the large, durable 7.0-inch touch screen is also possible with the ARK-F/AR-F. Alignment is easily achieved by simply long-pressing a position on the screen and an icon. Clearly identifiable icons assure intuitive operation. Moreover, a newly designed hand-held control and tablet control software are available as options that increase operator freedom and productivity.
Large pupil zone imaging method
The large pupil zone imaging method enables the measurement of wider area refraction up to 6 mm diameter and can indicate the difference between the wide area refraction and central area refraction of up to 3.5 mm diameter.
Super luminescent diode and highly sensitive CCD
Incorporation of the super luminescent diode (SLD) provides a sharper and clearer image compared to a conventional LED. The highly sensitive CCD detects the ring image even if the fundus reflection is weak.
Keratometry measurement with mire ring (available for the ARK-F)
The mire ring is used to measure keratometry. It reduces eyelid artifacts.
NIDEK eye detection camera (NEDC)
When the device recognizes that the patient's chin is correctly positioned on the chinrest, the new NIDEK eye detection camera (NEDC) automatically starts eye detection. Since NEDC holds eye position, faster and more precise alignment is possible without wasted adjustment time.
Large tilt and swivel monitor
Since the screen can be freely tilted and swiveled, the ARK-F/AR-F can be placed anywhere in an examination area. Flexible layout and space-saving design contribute to improved productivity and efficiency.
| Large pupil zone imaging method
The large pupil zone imaging method enables the measurement of wide area refraction of up to 6 mm diameter and can indicate the difference between the wide area refraction and central area refraction of up to 3.5 mm diameter.
SLD and highly sensitive CCD
The system combining the Super Luminescent Diode (SLD) and highly sensitive CCD significantly improves measurement capability even in dense cataractous eyes.
Optimal fogging to minimize accommodation
Fogging allows the patient to view the target clearly and minimizes the interference with accommodation even in high astigmatism.
Easy VA measurement with glare test
The ARK-1s provides visual acuity (VA) measurement. A glare source is illuminated beside the chart and the glare VA can be measured.
Simple opacity assessment with retroillumination image
The retroillumination image enables the observation of opacity of the optical media of the eye.
Patient-friendly accommodation measurement
Objective measurement of accommodation is performed with patient's focusing on a target which moves from distance to near.
Keratometry measurement with mire ring
The mire ring is used to measure keratometry. It reduces eyelid artifacts. |
| Product Number | ARK-F, AR-F | ARK-1s/1a/1, AR-1s/1a/1 |
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