ARK-1a Autorefractor & Keratometer

The 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 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. The accommodation helps to detect early presbyopia, latent hyperopia and children with reading difficulty. The retro-illumination benefits patient’s in viewing and understanding their cataracts. Super luminescent diode (SLD) makes it possible to accurately measure patients with cataracts, corneal opacities, IOLs, and post LASIK procedures. It also utilizes a multiple pupil zone imaging method combined with rotary prism technology, and auto alignment EyeTracking System on the X-Y-Z axes ensuring consistent, accurate, reliable and repeatable data.

  • SLD technology
  • Double ring technology
  • Confidence index indicator
  • Automatic pupil (2mm min.) and cornea size
  • Sphere measurement range -30D to +25D
  • Cyl 0.00D to ±12D
  • Auto X, Y, Z eye tracking
  • Accommodation
  • Retro-illumination
  • Tilt, LCD Screen

Retro Illumination

The ARK-1a Autrefractor/Keratometer features retro-illumination which illustrates media opacity in both the cornea and lens.

Super Luminescent Diode

Uses the high power and brightness of laser diodes providing a sharper image compared to LED. This measures patients, quickly and accurately, with cataracts, corneal opacities, IOL’s, and post LASIK

Tilt LCD Screen

Tiltable 6.5″ high quality full color LCD screen

High Speed Printer

Measurement values are printed out using a high-speed printer. Contact lens data can be included, as can eyeprint illustrations to aid in explaining myopia, hyperopia, or astigmatism to the patient.

User Friendly Features

The ARK-1a delivers the best combination of automated technology today for rapid testing, controlled for accommodation and a precise way to measure small and large pupils especially on eyes with media opacities

  • Retro Illumination

    The ARK-1a Autrefractor/Keratometer features retro-illumination which illustrates media opacity in both the cornea and lens.

  • Super Luminescent Diode

    Uses the high power and brightness of laser diodes providing a sharper image compared to LED. This measures patients, quickly and accurately, with cataracts, corneal opacities, IOL’s, and post LASIK

  • Tilt LCD Screen

    Tiltable 6.5″ high quality full color LCD screen

  • High Speed Printer

    Measurement values are printed out using a high-speed printer. Contact lens data can be included, as can eyeprint illustrations to aid in explaining myopia, hyperopia, or astigmatism to the patient.

  • User Friendly Features

    The ARK-1a delivers the best combination of automated technology today for rapid testing, controlled for accommodation and a precise way to measure small and large pupils especially on eyes with media opacities

    The ARK-1a delivers the best combination of automated technology today for rapid testing, controlled for accommodation and a precise way to measure small and large pupils especially on eyes with media opacities

    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. This measures patients, quickly and accurately, with cataracts, corneal opacities, IOL’s, and post LASIK.

    Marco Ion Slit Lamp Imaging System

    Marco ARK-1s Autorefractor Confidence Index Indicator

    Confidence Index Indicator

    The confidence index indicator for each measurement helps to further clarify the reliability of the data obtained and automatic pupil and cornea size is measured. The confidence index number can range from 3 to 9. This 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 EyeTracking System

    The EyeTracking System provides X, Y, Z axes tracking for superior alignment and focusing. The ARK-1s automatically initiates measurement at the optimal alignment.

    Marco ARK-1S Autorefractor & Keratometer Eye Tracking System

    Marco ARK-1S Autorefractor & Keratometer Accomodation

    Accomodation

    Accomodation testing graphs the accommodation on patients especially with pre-presbyopia symptoms, latent hyperopia and children that have near focusing difficulties.

    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

    Marco ARK-1s Autorefractor Retro Illumination

    Retro Illumination

    The ARK-1A Autrefractor/Keratometer features retro-illumination which illustrates media opacity in both the cornea and lens.

    ARK-1a Autorefractor & Keratometer Specs

    Technical Details

    Objective Spherical Refractive Error -30.00 to +25.00 D (VD = 12 mm) (0.01/0.12/0.25 D increments)
    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
    Power Consumption 100 VA

    Dimensions

    Measurements 260 (W) mm
    495 (D) mm
    457 (H) mm
    Mass 20 kg

    ARK SUCCESS STORIES

    The 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 IN PUBLICATIONS

    ARK-1a Autorefractor & Keratometer

    Super Luminescent Diode
    EyeTracking System
    Acuity Testing
    Confidence Index Indicator
    Dual Zone Refraction
    Accomodation
    Retro Illumination

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