The 3nethra aberro is a handheld autorefractometer equipped with the Shack-Hartmann Wavefront sensor aberrometry technology to detect visual acuity and refractive errors. It is used by an eye care professional to measure a person’s wide range of refractive errors and help prescribe glasses or contact lens. Due to its portable handheld feature, it is an ideal tool for mobile eye care such as community and home eye screening. The compact refractometer can also be mounted on a chin-rest stand to achieve more stability.
| Spherical measurement range | -14D to +14D, increments (0.25D) |
|---|---|
| Cylindrical measurement range | -7D to 0D, increments (0.25D) |
| Axis measurement range | 0 to 180 degrees, with 1-degree increment |
| Minimum pupil diameter | 2.5 mm |
| Vertex distance | 19.5 mm |
| Patient age range | Above 5 years |
| Internal fixation | Low spatial frequency sinusoidal grating with Gaussian envelope |
| Battery life | 8 hours with normal usage when fully charged |
| Display / connectivity | 3.5” color touch screen / USB and Bluetooth |
| Technology | Wave-front sensing |
| Power source | AC 100 to 240 V, 50 / 60 Hz |
| Measurement time | <5 seconds per eye |
| Weight / dimension | 650 g / 8.9” X 7.2” X 2.9” |
| Total weight | 11.1 kgs (3.4 kgs tricam + 7.7 kgs stand) |
| Internal storage memory | 300 measurements |
| Working environment light | Ambient light |
| Calibration | Not required |
| Battery pack | Lithium-ion battery 3.6V, 6800 mAh |
| Additional feature | Telemedicine compatible |
| Optional accessories | Bluetooth printer, portable stand |
| Standard accessories | Suitcase, device charger |
Reunión virtual con el Dr. Julian Triviño (Colombia)
