Description
What’s Included
- Visionix Retinomax K + Screen handheld auto refract-keratometer
- Charging station / base dock
- Power supply and cable
- 90-day Digital Eye Center warranty
Condition & Warranty
Used. Tested before listing and ready to use on arrival; the unit has been cleaned and may show minor cosmetic wear from prior clinical use. Optical alignment, screen response, measurement accuracy, and battery/charging-dock function were confirmed operational. Covered by a 90-day warranty on parts and workmanship.
Visionix Retinomax K Screen — Used Handheld Auto Refract-Keratometer
The Visionix Retinomax K Screen is a portable, handheld auto refract-keratometer that brings objective refraction and keratometry directly to the patient instead of the patient to a benchtop instrument. It captures sphere, cylinder, axis, and corneal curvature in a single lightweight pass, making the Retinomax K Screen well suited to pediatric, geriatric, wheelchair, and bedridden patients who cannot be positioned at a table-mounted unit.
A tiltable color LCD lets the operator watch live pupil alignment and readings from any angle, while Quick Mode and an automated fogging fixation target shorten acquisition on uncooperative eyes. An internal gyroscope tracks unit tilt and helps keep the cylinder axis accurate even when the device is not perfectly level.
Peer-reviewed work indexed by the National Library of Medicine reports that the handheld Retinomax provides reliable refractive-error measurement in pediatric populations, supporting its use where a conventional autorefractor is impractical.
Why Practices Choose the Visionix Retinomax K + Screen

- Handheld, chair-free design — perform objective refraction in the exam lane, screening room, mobile clinic, or at the bedside.
- Fast acquisition — captures a reading in roughly 0.12 seconds, with Quick Mode for children and uncooperative patients.
- Refraction and keratometry in one pass — sphere, cylinder, axis, and corneal curvature from a single handheld device.
- Wide measurement range — sphere from -20.00 D to +23.00 D and cylinder up to ±12.00 D.
- Tiltable color LCD — monitor pupil alignment and live readings from multiple angles.
- Internal gyroscope — signals unit tilt and helps maintain cylinder-axis accuracy off level.
- Small-pupil capability — measures down to a 2.3 mm minimum pupil size.
- Cordless operation — rechargeable battery with a charging dock for portable use throughout the day.
Clinical Applications
- Pediatric and vision screening where children cannot sit at a benchtop unit.
- Wheelchair, bedridden, and special-needs patients who cannot reach a table-mounted autorefractor.
- Pre-test objective refraction to establish a starting point and speed the subjective refraction.
- Mobile clinics, community outreach, and satellite offices.
- Quick keratometry readings as a baseline for contact-lens fitting.
Who This Is For
- Optometry and ophthalmology practices needing a portable autorefractor/keratometer.
- Pediatric offices and school-screening programs.
- Mobile and outreach eye-care providers.
- Practices adding a fast, chair-free second refraction station.
Technical Specifications
| Specification | Detail |
| Instrument type | Handheld auto refract-keratometer |
| Sphere range | -20.00 D to +23.00 D |
| Cylinder range | ±12.00 D |
| Corneal radius (keratometry) | 5.00 – 11.00 mm |
| Minimum pupil size | 2.3 mm |
| Measurement time | Approx. 0.12 s (faster in Quick Mode) |
| Eyepiece diopter adjustment | ±8 D |
| Display | Tiltable color LCD screen |
| Power | Rechargeable battery with charging dock (up to ~180 min) |
| Weight | Approx. 950 g with battery |
| Condition | Used |
| Warranty | 90-day Digital Eye Center warranty |
Compare Auto Ref-Keratometer Options
| Feature | Visionix Retinomax K + Screen | Nidek ARK-1e | Topcon KR-8900 |
| Form factor | Handheld / portable | Benchtop | Benchtop |
| Functions | Auto refraction + keratometry | Auto refraction + keratometry | Auto refraction + keratometry |
| Chair-free / mobile use | Yes | No | No |
| Display | Tiltable color LCD | Color LCD monitor | LCD monitor |
| Condition | Used | Used | Used |
| Warranty | 90-day | 90-day | 90-day |
| Price | $9,350 | $7,150 | $4,950 |
Also consider the portable Righton Retinomax K-Plus 5 handheld auto ref-keratometer, or the benchtop Nidek ARK-1e for a fixed lane.
Questions about the Visionix Retinomax K + Screen? Contact us for availability and shipping details.










