Description
Condition & Warranty
New. This equipment is brand new and is in excellent working order. The item is ready to use once it’s received, and no additional steps are needed to make it work. Carefully tested before shipping. Covered by a 1-year warranty on parts and workmanship.
Nidek ARK-1e Auto Ref/Keratometer — New with Large Pupil Zone Imaging Method
The Nidek ARK-1e is a high-precision automated refractor and keratometer that incorporates Nidek’s advanced Large Pupil Zone Imaging Method. This technology enables the device to measure refraction over a wider area (up to 4 mm diameter) rather than just the center, providing data that more closely reflects the patient’s actual vision. By utilizing the Super Luminescent Diode (SLD), the ARK-1e delivers sharper, clearer images compared to standard LEDs, allowing for successful measurements even in eyes with dense cataracts or opacities. With its ergonomic design and user-friendly interface, the ARK-1e simplifies the diagnostic process using a high-speed CCD camera and an automated “fogging” mechanism to minimize patient accommodation.
Research published in the National Library of Medicine confirms that automated refractometers utilizing large-zone imaging provide highly repeatable objective measurements, serving as an efficient and accurate foundation for subjective refraction in diverse clinical populations.
Why Practices Choose the Nidek ARK-1e
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Large Pupil Zone Imaging Method — Measures a wider area of the pupil to provide refraction data that is more representative of the patient’s functional vision
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Super Luminescent Diode (SLD) — Provides a more focused and intense light source than traditional LEDs, significantly improving measurement capability in eyes with media opacities
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Small Pupil Measurement — Capable of capturing accurate data through pupils as small as 2.0 mm, reducing the need for dilation in many patients
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Automatic PD Measurement — Automatically calculates the pupillary distance during the refractive exam, streamlining the clinical workflow
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Auto-Fogging Fixation — Uses a scenic target with advanced fogging to keep the patient’s eye relaxed and minimize accommodative errors
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Integrated Thermal Printer — Features an easy-load printer for immediate output of refraction and keratometry results
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High-Speed CCD Camera — Enhances the speed of image capture, reducing the time the patient needs to remain still
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Comprehensive Accessory Kit — Includes original manual and starter roll paper as documented in image_82989e.png
Clinical Applications
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Automated objective refraction as a precise starting point for subjective manifest refraction in routine exams
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Keratometry for base curve selection in soft and rigid gas permeable (RGP) contact lens fitting
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Pre-surgical evaluation for cataract patients, providing reliable data even through significant lens changes
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Pediatric and Geriatric Screening where fast, automated measurements are essential for patient cooperation
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High-volume workflows where the high-speed CCD and automated features reduce per-patient measurement time
Who This Is For
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Optometrists and Ophthalmologists looking for Nidek’s signature precision in a brand new tabletop format
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High-volume clinics that need a fast, durable workstation to handle consistent patient flow
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Contact lens specialists requiring accurate corneal curvature data for complex fittings
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Modern practices requiring updated connectivity and advanced SLD imaging for difficult-to-measure patients
Technical Specifications
| Specification | Detail |
| Model | Nidek ARK-1e |
| Type | Autorefractor / Keratometer |
| Technology | Large Pupil Zone Imaging / SLD |
| Sphere Range | -30.00D to +25.00D (0.12D / 0.25D step) |
| Cylinder Range | 0 to ±12.00D (0.12D / 0.25D step) |
| Axis Range | 0° to 180° (1° or 5° step) |
| Minimum Pupil | 2.0 mm |
| Refractive Area | Max. 4.0 mm diameter |
| Keratometry Range | 5.0 to 13.0 mm (curvature radius) |
| PD Measurement | 30 to 85 mm (1 mm step) |
| Printer | Built-in Easy-load Thermal Printer |
| Condition | New |
| Warranty | 1-year warranty on parts and workmanship |








