Nidek ARK-1a Autorefractor & Keratometer

FEATURES

• Large pupil zone imaging: Measures wide-area refraction (up to 6 mm), allowing optometrists to compare peripheral and central refraction for a more comprehensive assessment.
• SLD and highly sensitive CCD: Advanced optics combine a Super Luminescent Diode (SLD) with a sensitive CCD sensor—improving measurement accuracy even in dense cataracts.
• Optimal fogging: Minimizes accommodation and ensures patients can clearly view the target, delivering accurate results even in cases of high astigmatism.
• Retroillumination opacity assessment: Enables optometrists to easily observe opacities in the optical media for early cataract detection and pre-screening.
• Patient-friendly accommodation testing: Objectively measures accommodation as the patient focuses from distance to near, supporting pediatric and binocular vision assessments in the optometry clinic.
• Keratometry with mire ring: Uses a mire ring design to reduce eyelid artifacts and provide optometrists with reliable corneal curvature measurements.

Why Practices Choose the Nidek ARK-1a

• 9-point keratometry: Maps corneal curvature over a wider area than standard 4-point systems, providing optometrists with richer data for contact lens fitting, IOL calculations, and refractive surgery screening.
• Auto-tracking and auto-shot: Tracks pupil movement and captures measurements automatically, reducing chair time and operator variability in busy optometry clinics.
• Wide refraction range: Covers sphere from −25.00 D to +25.00 D and cylinder up to ±10.00 D—making the ARK-1a suitable for standard and high-prescription optometry patients.
• Color LCD with keratometric map: Instantly displays sphere, cylinder, axis, and a simulated keratometric map—giving optometrists and staff a clear overview of corneal regularity and refractive data.
• Compatible with Nidek RT phoropters: RS-232C serial output enables direct data transfer to Nidek motorized phoropters, streamlining your refraction workflow and reducing exam time.
• Fast, consistent measurement: Captures both eyes in seconds, maintaining high throughput and accuracy and repeatability—ideal for busy optometry clinics.
• Proven clinical track record: The ARK-1 series is trusted by optometrists worldwide for reliable, accurate performance in high-volume practice environments.

Clinical Applications

• Objective pre-testing refraction: Provides a starting prescription for subjective manifest refraction, helping optometrists reduce chair time and streamline the exam process.
• 9-point corneal curvature mapping: Ideal for soft and rigid gas-permeable contact lens fitting that requires detailed K-reading coverage across the cornea.
• Cataract pre-surgical keratometry: Delivers baseline K readings to support accurate IOL power calculations and surgical planning in optometry clinics.
• Refractive surgery screening: Combines corneal curvature and objective refraction for efficient LASIK and PRK candidate evaluation in the optometry clinic.
• High-volume and technician-driven lanes: Auto-shot capture enables rapid, consistent pre-testing—minimizing examiner involvement and supporting efficient clinic flow for optometrists.

Who This Is For

• Optometry practices upgrading to 9-point keratometry: Ideal for clinics moving up from older or lower-spec autorefractors—available at used pricing with a warranty for peace of mind.
• High-volume clinics: Perfect for optometry practices needing reliable auto-shot and auto-tracking to support technician-driven pre-testing and maximize patient throughput.
• Contact lens specialty practices: Designed for optometrists who need 9-point corneal mapping for advanced contact lens fitting and specialty care.
• Practices using Nidek RT phoropters: Perfect for optometrists who want direct ARK compatibility and automated data transfer for a seamless refraction workflow.

What’s Included

• Nidek ARK-1a autorefractor keratometer (main unit)
• Chin rest assembly
• Power cable
• 1-year warranty

Reference

• Nidek ARK-1a Autorefractor & Keratometer Brochure