![](https://marco.com/wp-content/uploads/beans/images/product-ark1a-8b38574.jpg)
ARK-1a Autorefractor & Keratometer
ARK-1a Autorefractor & Keratometer
The Marco ARK-1a is a multimodality device that includes autorefraction and keratometry. This automated instrument measures with objective accuracy and features accommodation testing and retro illumination.
ARK-1a Autorefractor & Keratometer
The Marco ARK-1a is a multimodality device that includes autorefraction and keratometry. This automated instrument measures with objective accuracy and features accommodation testing and retro-illumination. Super Luminescent Diode (SLD) technology allows for accurate measurements on patients with cataracts, corneal opacities, IOLs, and post LASIK procedures. The ARK-1a also utilizes a multiple pupil zone imaging method combined with rotary prism technology and an auto alignment Eye Tracking System to ensure consistent, accurate, reliable and repeatable data.
- Super Luminescent Diode (SLD) for sharper images compared to LED
- Accurate data even through many cataracts
- EyeTracking system provides X-Y,-Z tracking for superior alignment and focus
- Large pupil zone imaging method (up to 6mm diameter)
- Accommodation measurement
- Keratometry measurement with mire ring to reduce eyelid artifacts
- Retro illumination illustrates media opacity in both the cornea and lens
- 6.5″ high-quality, full-color LCD screen
- High speed printer
Autorefractors/Keratometers /
ARK-1a
Features:
- Super Luminescent Diode (SLD) for sharper images compared to LED
- Accurate data even through many cataracts
- Eye Tracking system provides X-Y-Z tracking for superior alignment and focus
- Large pupil zone imaging method (up to 6mm diameter)
- Accommodation measurement
- Keratometry measurement with mire ring to reduce eyelid artifacts
- Retro illumination illustrates media opacity in both the cornea and lens
- 6.5″ high-quality, full-color LCD screen
- High speed printer
![ARK-1a Autorefractor & Keratometer](https://marco.com/wp-content/uploads/2018/06/product-ark1a.jpg)
The best combination of automated technology for rapid testing controlled for accommodation.
Super Luminescent Diode (SLD)
Super Luminescent Diode is an edge-emitting semiconductor light source based on super luminescence. It uses the high power and brightness of laser diodes providing a sharper image compared to LED. It allows for quick and accurate measurements of patients with cataracts, corneal opacities, IOL’s, and post LASIK.
![Marco ARK Super Luminescent Diode (SLD)](https://marco.com/wp-content/uploads/2018/06/arksld.png)
![Marco ARK-1s Autorefractor Confidence Index Indicator](https://marco.com/wp-content/uploads/2018/06/arkconfidence.png)
Confidence Index Indicator
The confidence index indicator helps to clarify the reliability of the data obtained by the ARK-1a. The confidence index number can range from 3 to 9 and gives the operator an indication of the clarity and quality of the ocular media. A value near 9 means the data is very repeatable and consistent. Values of 6 or below indicate media opacity or highly irregular optics.
The Eye Tracking System
The Eye Tracking System provides X, Y, Z axes tracking for superior alignment and focusing. The ARK-1a automatically initiates measurement at the optimal alignment.
![Marco ARK-1S Autorefractor & Keratometer Eye Tracking System](/images/product-ark1s-tracking.jpg)
![Marco ARK-1S Autorefractor & Keratometer Accomodation](https://marco.com/wp-content/uploads/2018/06/arkaccommoadation.png)
Accomodation
Accommodation testing helps to detect early presbyopia, latent hyperopia, and children with reading difficulty.
Dual Zone
Exclusive dual zone refractive measurement utilizing double-ring technology to measure two pupil zones supplies information based on pupil size and provides more robust objective data as a starting point for subjective refractions.
![Marco ARK-1S Autorefractor & Keratometer Double-Ring Technology](/images/product-ark1s-rings.jpg)
![Marco ARK-1s Autorefractor Retro Illumination](/images/product-ark1s-retro.jpg)
Retro Illumination
The ARK-1a Autrefractor & Keratometer features retro illumination which illustrates media opacity in both the cornea and lens.
ARK-1a Autorefractor & Keratometer Specifications
Technical Details
Objective Spherical Refractive Error | -30.00 to +25.00 D (VD = 12 mm) (0.01/0.12/0.25 D increments) |
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Cylindrical Refractive Error | 0 to ±12.00 D (0.01/0.12/0.25 D increments) |
Cylinder Axis | 0 to 180° (1°/5° increments) |
Minimum Measurable Pupil Diameter | ø2 mm |
Corneal Curvature Radius | 5.00 to 13.00 mm (0.01 mm increments) |
Corneal Refractive Power | 25.96 to 67.50 D (n = 1.3375) (0.01/0.12/0.25 D increments) |
Corneal Cylindrical Power | 0 to ±12.00 D (0.01/0.12/0.25 D increments) |
Corneal Cylinder Axis | 0 to 180° (1°/5° increments) |
Pupillary Distance Measurement | 30 to 85 mm (1 mm increments) |
Corneal Size Measurement | 10.0 to 14.0 mm (0.1 mm increments) |
Pupil Size Measurement | 1.0 to 10.0 mm (0.1 mm increments) |
Accommodation Measurement | 0 to 10.00 D (0.01/0.12/0.25 D increments) |
Observation/Display Method | 6.5-inch color LCD |
Printer | Thermal line printer with auto cutter |
Interface Connectors | RS-232C: Two ports USB: One port LAN: One port |
Power
Power Supply | AC 100 to 240 V ±10% 50/60 Hz |
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Power Consumption | 100 VA |
Dimensions
Measurements | 260 (W) mm 495 (D) mm 457 (H) mm |
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Mass | 20 kg |
ARK SUCCESS STORIES
The ARK-1a Autorefractor & Keratometer offers a precise way to measure small and large pupils, especially on eyes with media opacities.
ARK-1a Autorefractor & Keratometer
![](https://marco.com/wp-content/uploads/2018/06/product-ark1a.jpg)