3Nethra aberro Hand-held Autorefractometer

  • Portable and lightweight
  • Intuitive touch screen
  • Easy printing
  • Extended battery life
  • Compatible with telemedicine platform for mobile eye test


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.

Technical Specifications

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


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Vendor Information

  • 5.00 rating from 4 reviews