The Marco HandyRef-K Portable ARK is a solution for accurate refraction and keratometry measurements anytime and anywhere. The HandyRef-K handheld autorefractor and keratometer is lightweight and its compact design makes it easy to hold, balance and use. The intelligently designed button layout is also useful in one-handed operation. For inexperienced patients like children, the newly added melody function can ease anxiety and draw attention. Data can be transferred quickly and easily to a PC.
FEATURES
- Lightweight, compact design
- Full graphic 3.5” LCD color screen
- Auto shot mode for easy data capture
- Pupil size measurement
- Retro illumination image observation
- Axis correction function
- R/L auto detection
- Keratometry measurement with Mire Ring
- Removable magnetic occluders
Pupil Zone Imaging Method
The HandyRef-K analyzes a wide area pupil zone (max. 4mm diameter). More accurate measurement data, closer to the subjective refraction is possible by measuring the light coming through the pupil zone in a wider area. Small pupils (min. 2mm diameter) can also be measured.
Super Luminescent Diode (SLD) & Highly Sensitive CCD
Super luminescent diode (SLD) light source provides a sharper and more defined ring image compared to conventional LED. The highly sensitive CCD camera detects the image even if the fundus reflection is weak due to media opacities.
SynchroScan Technology
Measurements start when alignment is achieved, and data is captured when alignment becomes optimal. This provides a more stable, effective, and efficient measurement.
Supine Position Mode
When tilting the instrument 60º or more downward, the supine position mode automatically starts. When measuring from the patient’s side, the cylinder axis is compensated by 90º and is displayed.
Focusing Indicator
By detecting the distance between the instrument and the patient’s eye, the alignment guide mark is displayed on the screen to facilitate smooth measurement.
Measurement Modes
- Auto Shot Mode – When the alignment/focusing becomes optimal, the HandyRef-K gets the measurement data automatically. If unstable data is included, additional measurement automatically starts.
- Cataract Measurement Mode – If appropriate data cannot be obtained by standard measurement, it enters the cataract measurement mode automatically to harvest the data more easily.
- Quick Measurement Mode – Faster and simpler measurement for patients who have difficulty in alignment. By relaxing the measurement range, children or patients whose eye movement is not stable can still be measured smoothly.
- Additional Measurement Mode – If the measurement data obtained by auto shot is not reliable, additional measurement will automatically be performed by additional measurement (AM) mode.
Memory Data Management
The measurement data of 50 patients (100 eyes) is saved in the main body memory.
Melody Function
A melody can be played to hold a child’s attention during measurement.
Enhanced Interface
LAN/WLAN, RS232C cable and EyeCa-RW2 (Eye Care card) provide quick and easy data transfer from the HandyRef-K/HandyRef to RT. Measurement data transfer to a PC through LAN/WLAN or USB flash drive is possible.
Portable Base Unit & Printer
By utilizing a portable stand, the HandyRef-K can be used as a desktop device. An integrated printer with auto cutter function is also available. By using an IR or wireless LAN (WLAN) connection, measurement data can be printed even if the main body and station are separated.
SPECIFICATIONS
| Auto refractometer Measurement Range Sphere |
-20.00 to +20.00 D (VD = 12mm) (0.12 / 0.25 D increments) Cylinder 0 to 12.00 D (0.12 / 0.25 D increments) Axis 0 to 180° (1° / 5° increments) |
| Minimum measurable pupil diameter |
ø2 mm |
| Auto keratometer Measurement Range Curvature Radius |
5.00 to 13.00 mm (0.01 mm increments) |
| Refractive Power |
25.96 to 67.50 D (0.12 / 0.25 D increments) |
| Cylindrical Power |
0 to 12.00 D (0.12 / 0.25 D increments) |
| Axis |
0 to 180º (1° / 5° increments) |
| Sagittal Measurement |
25º each from the center (superior side, inferior side, temporal side, nasal side) |
| Pupil Size Measurement Range |
1.0 to 10.0 mm (0.1 mm increments) |
| Fixation Target |
Scenery |
| Display |
3.5-inch color LCD |
| Interface |
USB: 1 port Wireless LAN (WLAN): 1ch (Wireless LAN (WLAN)-equipped model only) |
| Power Specification Battery Pack |
Lithium-ion battery (7.2 V 1800 mAh) |
| Station Feed |
DC 9 V 2 A (maximum) |
| Dimensions/Mass |
206 (W) × 181 (D) × 224 (H) mm (including occluders) / 998 g (including battery pack) 8.1 (W) x 7.1 (D) x 8.8 (H)” (including occluders) / 2.2 lbs. (including battery pack) |
| Printer |
Thermal line printer with easy loading and auto cutter (printer-equipped model only) |
| Interface |
USB: 1 port, LAN: 1 port, RS-232C: 1 port (printer-equipped model only) |
| Battery Charging Battery Pack |
Lithium-ion battery (7.2 V 1800 mAh) |
| Charging |
When inserted in the main body: Approx. 180 min. (when the main body is placed on the station) When inserted in the battery slot: Approx. 140 min. |
| Power Supply |
AC 100 to 240 V, 50 / 60 Hz |
| Power Consumption |
60 VA |
| Dimensions/Mass |
224 (W) x 283 (D) x 147 (H) mm / 2.7 kg (printer-equipped model), 2.5 kg (model without printer) 8.8 (W) x 11.1 (D) x 5.8 (H)” / 5.9 lbs. (printer-equipped model), 5.5 lbs. (model without printer) |
| Standard Accessories |
Occluder (2 units), Neck strap, Printer paper (3 rolls / printer-equipped model only), Power cord, Connection cable, Battery pack, Dust cover, Spherical model eye, Contact lens holder |
| Optional Accessories |
Carrying case, Carrying case with portable stand, Barcode scanner, Magnetic card reader, EyeCa-RW2, Eye Care card, Communication cable, Battery pack, USB flash drive |
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