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ARK-1S AUTOREFRACTOR & KERATOMETER
Details
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 patients 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 Eye Tracking 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 Glare Testing Low Contrast Testing Visual acuity chart –unaided/aided/glasses/near Subjective sphere refinement Accommodation Retro-illumination Tilt, LCD Screen
Tech Specs
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 Subjective Visual Acuity Measurements <0.1 / 0.1 / 0.25 / 0.32 / 0.4 / 0.5 / 0.63 / 0.8 / 1.0 / 1.25 <20/200 / 20/200 / 20/80 / 20/60 / 20/50 / 20/40 / 20/30 / 20/25 / 20/20 / 20/16 Spherical Refractive Error -20.00 to +20.00 D (VD = 12 mm) (0.25 D increments) Cylindrical Refractive Error 0 to ±8.00 D (Max.) (0.25 D increments) Cylinder Axis 0 to 180° (1°/5° increments) Near Addition Power 0 to +9.75 D (0.25 D increments) 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)Fixation TargetN/A Pupil Size Measurement 1.0 to 10.0 mm (0.1 mm increments) Accomodation 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 Supply AC 100 to 240 V ±10% 50/60 Hz Power Consumption 100 VA Dimensions 260 (W) mm × 495 (D) mm × 457 (H) mm Mass 20 kg
