Model: ARK-7800
ARK-7800 auto ref keratometer is an eyesight measurement machine for optical store, ophthalmic clinic, or hospital. It is mainly used for testing sphere and cylinder refractive errors, and corneal curvature. It uses a new optical system with Hartmann imaging analysis to deliver stable and accurate refraction results.
The system features a movable TFT touch screen, motorized chin rest, and auto tracking and focusing for easy operation. A built-in printer with automatic paper cutting supports quick output of test results in daily clinical use.

1°–180° Axis, One key lock function, convenient and practical.

7.0 inchs touch screen, angel adjustable, provide operator with comfortable viewing angle both when sit or stand.
| Parameter | Specification |
|---|---|
| Vertex Distance (VD) | 0.0, 12.0, 13.75, 15.0 mm |
| SPH | -30.00 D to +25.00 D (VD=12mm), steps: 0.01, 0.06, 0.12, 0.25 D |
| CYL | 0.00 to ±10.00 D (steps: 0.06, 0.12, 0.25 D) |
| Axis (AX) | 1° to 180° (1° step) |
| Cylinder form | -, +, -+ |
| Pupil Distance (PD) | 10–86 mm |
| Minimum Time | < 0.5 s |
| Pupil Diameter | 2.00–8.00 mm |
| Measuring Light Energy | < 30 μW (Ensure measuring safety) |
| Radius of Curvature | 5.0–10.0 mm (0.01 mm step) |
| Corneal Power | 33.00 D–67.00 D (based on corneal equivalent refractive index of 1.3375) |
| Corneal Astigmatism | 0.00–15.00 D (steps: 0.06/0.12/0.25 D) |
| Data Storing | 10 measured values for each left and right eye |
| Axis | 1°–180° |
| Chart | Auto chart |
| Monitor | SHARP 7″ TFT LCD touch screen (adjustable viewing angle) |
| Built-in Printer | 57 mm thermal printer, auto paper-cutting |
| Electrical | AC 100–250 V, 50/60 Hz |
| N.W. | 22 kg |
| G.W. | 26.5 kg |
Trusted Services:
1. Video chat to check ARK-7800 OAuto Refkeratometer.
2. Free online technical support and training.
3. Free online installation support.
4. 1-3 Years quality warranty.
5. Lifetime after sales support.
6. Most products are CE and ISO 13485 certificated.
7. Free input voltage and plug customization for electrical machines.
8. Fast worldwide shipping, 5-10 working days delivery for most countries.
9. Partial prepayment is acceptable before shipping.
10. Discount price, non-branded or customized products can be offered for distributors.
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Room 135, 1101 Huyi Highway,Nanxiang Town,Jiading District,Shanghai, China.
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