LINK ARK-1500

Hospital ophthalmology departments and NHS eye clinics conducting routine and preoperative refraction assessments benefit from the ARK-1500's hexagon prism and high-sensitivity CCD optical system, which the manufacturer describes as providing unmatched accuracy and reliability — differentiating it from refractometers using conventional prism or Hartmann-based measurement architectures. The auto-focus function automatically aligns to the patient's eye and retrieves the measurement value without manual operator trigger input, reducing per-patient examination time and minimising alignment-dependent measurement variability across different operators and session volumes. The three vertex distance options of 0mm, 12mm, and 13.75mm support measurement in patients with different spectacle frame vertex distances. Medigear.uk provides procurement documentation and pre-purchase consultation for ophthalmology units evaluating the ARK-1500.

Optometry practices and refraction clinics benefit from the ARK-1500's tilting screen function, which allows the 7-inch TFT LCD to be accessed from a wide range of operator positions, whether sitting or standing — an ergonomic advantage in practices where the examiner changes posture between patients or rooms. The operator-side chinrest adjustment switch enables speedy patient positioning from the operator's natural working position without reaching around the instrument. The follow-up colourful fogging chart system provides an integrated fogging stimulus for the refraction sequence. Medigear.uk supplies the ARK-1500 to optometry practices and distributors through its B2B procurement channel.

Cataract assessment units and specialist diagnostic suites benefit from the ARK-1500's corneal diameter measurement of 2.0 to 14.0mm, corneal power range of 33.75 to 67.50D, and corneal astigmatism measurement to 8D for keratometry in IOL power calculation and refractive surgery screening workflows.

Individual buyers and private clinics can acquire the ARK-1500 directly through Medigear.uk. At approximately 15.5KG, it is the lightest instrument in the ARK range available from Medigear.uk.

Hexagon Prism and High-Sensitivity CCD for Unmatched Accuracy

The ARK-1500's hexagon prism optical system combined with a high-sensitivity CCD sensor is described by the manufacturer as delivering unmatched accuracy and reliability in refraction and keratometry measurements. This optical architecture differs from the Hartman imaging approach used in the ARK-980, providing an alternative measurement technology suited to practices seeking hexagon prism-based refractometry. The high-sensitivity CCD supports reliable measurement capture across a wide range of clinical presentations, including small pupils and mild media opacities, contributing to the ARK-1500's classification as a leading technology instrument. Medigear.uk can provide full optical system documentation on request.

Tilting Screen for Ergonomic Access Whether Sitting or Standing

The 7-inch TFT LCD tilts to provide comfortable viewing access across the full range of operator postures — sitting and standing — without requiring the instrument to be repositioned. This tilting function is a practical ergonomic advantage in examination rooms where desk height is fixed or where different operators use the same instrument at different heights throughout the day. The tilting mechanism adjusts the display angle on demand and provides a wider variance of comfortable access than a fixed-angle display, supporting consistent and fatigue-free operation across extended examination sessions.

Operator-Side Chinrest Switch for Speedy Patient Positioning

The chinrest adjustment switch is positioned on the operator side of the ARK-1500, enabling the operator to raise or lower the chinrest from their natural working position without reaching around the instrument body or asking the patient to perform self-adjustment. This switch placement eliminates the physical reach step from the patient positioning sequence and is described as enabling speedy reading between patients. In high-volume examination sessions where chinrest adjustment is performed repeatedly, the operator-side placement directly reduces the cumulative time spent on patient positioning.

Three Vertex Distance Options: 0mm, 12mm, and 13.75mm

Three selectable vertex distance options — 0mm, 12mm, and 13.75mm — allow measurement to be matched to the patient's actual spectacle frame vertex distance, which is particularly important for high-power prescriptions where vertex distance significantly affects the effective lens power at the eye. The three options cover the principal vertex distances used in ophthalmic and optometric spectacle dispensing and contact lens fitting. The ARK-980 provides only VD=12mm, making the ARK-1500's three-option VD selection a practical advantage for practices managing high-power prescription patients.

Cylinder Measurement to ±8D for High Astigmatism

The ARK-1500 measures cylinder from -8D to +8D in 0.125D steps, covering high astigmatism encountered in keratoconus, post-surgical patients, and other specialist presentations that exceed the measurement capability of instruments with smaller cylinder ranges. The 0.125D step provides finer resolution than the 0.25D step commonly used in standard dispensing, supporting both routine clinical prescription and research-grade refraction measurement within the same instrument.

Corneal Diameter Measurement: 2.0 to 14.0mm

The ARK-1500 measures corneal diameter from 2.0 to 14.0mm in 0.1mm increments — a parameter not available on all comparable auto refractometer keratometer instruments. Corneal diameter measurement supports phakic IOL sizing, contact lens fitting, and anterior segment anatomy documentation within the same refraction and keratometry session, extending the clinical utility of the ARK-1500 beyond standard sphere, cylinder, and axis measurement.

Follow-up Colourful Fogging Chart System

The integrated follow-up colourful fogging chart system provides an automated fogging stimulus within the instrument's chart display, supporting the subjective refraction fogging technique without requiring a separate chart projector or chart screen in the examination room. The colourful presentation of the fogging chart provides a more engaging visual stimulus than standard monochrome chart displays, and the follow-up designation indicates the chart is designed to bridge the transition from objective ARK measurement to subjective refraction refinement within the same instrument session.

Compact 15.5KG for Easy Positioning and Portability

At approximately 15.5KG, the ARK-1500 is significantly lighter than the ARK-980 at 22KG and lighter than many comparable full-function auto refractometer keratometer instruments. This reduced weight makes bench repositioning more manageable for solo operators and supports movement of the instrument between examination rooms in multi-room optometry practices or portable examination settings. The compact 514 × 284 × 465mm footprint suits standard examination desks without encroaching on adjacent instrument space.

Built-in Thermal Printer for Immediate Result Documentation

The ARK-1500 includes a built-in thermal printer that produces immediate result printouts at the point of examination without requiring a separate printer, paper loading setup, or manual cutting between patients. The thermal printing function supports prompt result documentation for patient records and eliminates the transcription errors associated with manually recording values from the display screen. Medigear.uk can confirm thermal paper supply and replacement specifications for the ARK-1500 on request.

Sphere Measurement: 20D to +20D, 0.125D Step, Three VD Options

Sphere is measured from -20D to +20D at selectable vertex distances of 0mm, 12mm, or 13.75mm in 0.125D steps. Three vertex distance options support accurate measurement for high-power prescriptions at different frame fitting distances.

Cylinder Measurement: 8D to +8D, 0.125D Step

Cylinder is measured from -8D to +8D in 0.125D steps, covering high astigmatism in specialist presentations including keratoconus and post-surgical patients.

Axis Measurement: 0° to 180°, 1° Step

Axis covers 0° to 180° in 1° steps for both refraction and keratometry, providing the precision required for spectacle and toric contact lens dispensing.

Pupil Distance: 045 to 88mm, 1 mm step

Pupil distance is measured from 045 to 88mm in 1mm steps, covering monocular and binocular PD measurement for all standard dispensing requirements.

Minimum Pupil Size:> 2.0 mm

Minimum measurable pupil size is> 2.0 mm, supporting measurement in patients with pharmacologically or anatomically small pupils without dilation.

Radius of Curvature: 5.0 to 10mm, 0.01mm Increment

Radius of curvature covers 5.0 to 10mm in 0.01mm increments, providing the resolution required for accurate keratometry in IOL power calculation and corneal fitting.

Corneal Power: 33.75 to 67.50D, Refractive Index 1.337

Corneal power spans 33.75 to 67.50D based on refractive index 1.337, with selectable increments of 0.12D or 0.25D, covering flat post-refractive surgery corneas through to steep keratoconic corneas.

Corneal Astigmatism: 0.0 to 8D

Corneal astigmatism is measured from 0.0 to 8D with selectable increments of 0.12D or 0.25D, covering the full range from mild regular to high irregular astigmatism.

Corneal Diameter: 2.0 to 14.0mm, 0.1 mm increment

Corneal diameter is measured from 2.0 to 14.0mm in 0.1mm increments, supporting phakic IOL sizing, contact lens fitting, and anterior segment anatomy documentation.

Display: 7-inch TFT LCD with Tilting Function

The 7-inch TFT LCD tilts for ergonomic access whether the operator is sitting or standing. The tilting function eliminates the need to reposition the instrument for different operator heights.

Operator-Side Chinrest Adjustment Switch

The chinrest adjustment switch is positioned on the operator side, allowing speedy patient positioning from the operator's natural working position without reaching around the instrument.

Auto Focus and Auto Measurement

Auto focus automatically aligns to the patient's eye and retrieves the measurement value without manual trigger input, reducing per-patient examination time and operator skill requirements.

Built-in Thermal Printer

Integrated thermal printing provides immediate result printouts at the examination station without a separate printer or manual paper handling step.

The ARK1500 auto refractometer keratometer provides a validated, full-function refraction and keratometry platform suited to hospital ophthalmology departments, NHS eye clinics, optometry practices, and specialist ophthalmic examination suites requiring accurate sphere, cylinder, axis, and corneal power measurement in a compact, lightweight instrument. Its hexagonal prism and high-sensitivity CCD optical system, sphere range of 20D, cylinder up to 8D, corneal power from 33.75 to 67.50D, corneal diameter measurement, tilting 7-inch TFT LCD screen, operator-side chinrest control, follow-up fogging chart, and built-in thermal printer collectively address the requirements of institutional procurement teams, independent practice owners, and equipment distributors. Full specification documentation is available from Medigear.uk. Contact Medigear.uk for specifications, procurement assistance, or expert consultation.