Description
What’s Included
- Righton Retinomax K+ Screen handheld auto refractor/keratometer (with built-in tilting color LCD)
- Charging cradle / docking base
- Righton thermal printer
- AC power adapter and power cord
- Instruction manual
- Dust cover
- 90-day Digital Eye Center warranty
Condition & Warranty
Used. This unit has been fully tested and is in good working order — the optical alignment locks onto targets quickly, refraction and keratometry readings are stable, and the charging cradle and thermal printer function correctly. The handheld body and screen show minor cosmetic wear consistent with normal clinical use. Covered by a 90-day warranty on parts and workmanship.
Retinomax Autorefractor Keratometer — Used Handheld Ref/Keratometer
The Righton Retinomax K+ Screen is a handheld Retinomax autorefractor keratometer that captures objective refraction (sphere, cylinder, axis) and central corneal curvature in a single, fully portable instrument. Built around Righton’s retinoscopy-principle optics, it brings table-top-class measurement range to a battery-powered unit the clinician can carry to the patient — at the chair, the crib, or the screening lane. The “Screen” configuration adds a built-in upward-tilting 3.5-inch color LCD so the operator can confirm alignment and fixation from a comfortable posture.
Designed for difficult patients, the Retinomax K+ Screen fires each reading automatically the moment the eye is centered, and its automatic axis compensation corrects for any tilt in how the device is held. A color-coded Focus Assist guides the operator to the optimal working distance, while a child-friendly melody and changing fixation targets hold a young patient’s attention through the measurement. The included dockable thermal printer outputs results on the spot, and the charging cradle keeps both the unit and printer ready between exams.
Research published in the National Library of Medicine found the handheld Retinomax to provide accurate, repeatable refractive measurements in a pediatric population, supporting its use where a stationary refractor is impractical.
Why Practices Choose the Righton Retinomax K+ Screen
- True handheld kerato-refraction — combined objective refraction and central keratometry in one battery-powered, carry-anywhere unit
- Built-in tilting color LCD — a 3.5-inch upward-tilting screen lets the operator verify alignment and fixation without awkward posture
- Automatic axis compensation — internal sensing corrects cylinder axis readings even when the device is held at an angle
- Automatic capture — the measurement fires the instant the pupil is centered, reducing operator-dependent error
- Focus Assist — color-coded guidance to the optimum working distance for consistent captures
- Child-friendly fixation — a melody and changing targets keep pediatric patients engaged during the reading
- Dockable thermal printer — prints refraction and keratometry results immediately at the point of care
- Long battery life — up to 180 minutes of operation for mobile screening, ward rounds, and pre-op clinics
Clinical Applications
- Pediatric and infant refraction where a child cannot sit at a table-top autorefractor
- Community and school vision screening programs
- Bedside and ward-round measurement for non-ambulatory or wheelchair-using patients
- Pre-operative and surgical-suite refraction and keratometry
- Objective starting point for subjective refinement in a busy exam lane
Who This Is For
- Pediatric ophthalmology and optometry practices
- Mobile and outreach vision-screening providers
- Hospitals and surgical centers needing portable refraction and keratometry
- Practices that want a reliable backup or second-room auto ref/keratometer
Technical Specifications
| Specification | Detail |
| Type | Handheld auto refractor / keratometer |
| Sphere range | -20.00 D to +23.00 D (retinoscopy principle) |
| Cylinder range | 0 to ±12.00 D |
| Axis | 0-180° |
| Keratometry radius | 5.00-11.00 mm |
| Corneal astigmatism | 0-12.00 D |
| Minimum pupil size | Φ2.3 mm |
| PD range | 1-83 mm |
| Display | 3.5-inch upward-tilting color LCD |
| Battery life | Up to 180 minutes |
| Weight | Approx. 1.3 kg |
| Printer | Dockable thermal printer (included) |
| Condition | Used |
| Warranty | 90-day Digital Eye Center warranty |
Compare Handheld Auto Ref/Keratometer Options
| Feature | Righton Retinomax K+ Screen | Nidek HandyRef-K | Righton Retinomax K-Plus 3 |
| Type | Handheld ref/keratometer | Handheld ref/keratometer | Handheld ref/keratometer |
| Sphere range | -20 to +23 D | -20 to +20 D | -18 to +23 D |
| Cylinder | ±12 D | ±12 D | ±12 D |
| Keratometry radius | 5.0-11.0 mm | 5.0-13.0 mm | Central keratometry |
| Display | 3.5-inch tilting color LCD | 3.5-inch tilting color LCD | Compact built-in LCD |
| Built-in/dockable printer | Yes | Yes | Yes |
| Condition | Used | Used | Used |
| Price | $10,450 | $9,350 | $6,600 |
Also consider the Nidek HandyRef-K for a lower-cost handheld with a wider keratometry range, or the Righton Retinomax K-Plus 3 as a more economical unit from the same Retinomax family.
Questions about the Righton Retinomax K+ Screen? Contact us for availability and shipping details.
