Balaji Technomed

3nethra Aberro

The 3nethra Aberro is an advanced handheld autorefractometer that utilizes Shack-Hartmann Wavefront Sensor Aberrometry to deliver fast, accurate, and comprehensive refractive error assessments. Designed for mobility and precision, it is ideal for diverse clinical and outreach environments, including pediatric, geriatric, and bedridden patient care.

What It Does

The device measures key components of refractive error:

Sphere (SPH): Detects myopia (nearsightedness) or hyperopia (farsightedness)
Cylinder (CYL): Measures astigmatism
Axis: Determines the orientation of astigmatism

Results are obtained within seconds, providing quick and non-invasive assessment by analyzing how light reflects off the retina.

Key Features

Shack-Hartmann Wavefront Sensor
Advanced aberrometry for high-accuracy, full-spectrum refractive analysis.
Portability
Lightweight and handheld—ideal for fieldwork, mobile clinics, and screenings.
Rapid Measurements
Delivers accurate results in just a few seconds.
Touchscreen Interface
Intuitive, user-friendly controls for seamless operation.
Connectivity
Supports Bluetooth, Wi-Fi, and USB for easy data transfer and EMR integration.
Pupil Size Measurement
Integrated pupillometry for comprehensive eye data.
Single & Bifocal Prescription Support
Versatile prescription capabilities to accommodate a wide range of patients.
Supine Position Testing
Enables comfortable testing for bedridden or immobile patients.

Technology Highlight: Shack-Hartmann Wavefront Aberrometry

Unlike traditional autorefractors, the 3nethra Aberro detects both:

Lower-order aberrations
- Myopia
- Hyperopia
- Astigmatism
Higher-order aberrations:
- Impact visual quality in low-light conditions
- Crucial post-refractive surgery or in cases like keratoconus
- Often missed by conventional autorefractors

This technology offers superior diagnostic precision and enables more tailored prescriptions and treatment plans.

Clinical Applications

✅ Myopia (Nearsightedness)
✅ Hyperopia (Farsightedness)
✅ Astigmatism
✅ Anisometropia (unequal refractive power between eyes)
✅ Anisocoria (unequal pupil sizes)
✅ Keratoconus
✅ Cataracts
✅ Higher-order aberrations
✅ Supine testing in bedridden or hospitalized patients

Use Case Scenarios

Mobile eye care and outreach camps
Pediatric screenings
Geriatric and hospital-based care
Optical retail setups and home visits
Refractive surgery pre- and post-op evaluations

PRODUCT ADVANTAGES

✓ Portable & Lightweight

Weighs just 650 grams, perfect for clinics, outreach programs, and bedside exams

✓ User-Friendly Touchscreen Interface

Equipped with a 3.5” color touchscreen for intuitive operation and navigation

✓ Fast and Efficient

Measures each eye in under 5 seconds, streamlining workflow and improving patient throughput

✓ Flexible Design

Suited for various patient positions, including supine or seated

✓ Easy Data Management

Includes USB and Bluetooth for seamless data export and printing

✓ Long Battery Life

Operates up to 12 hours on a single full charge — ideal for mobile use

✓ Internal Fixation Target

Built-in Gaussian-pattern target helps ensure stable and accurate measurements

Technical Specifications

Refractive Measurement

Ranges

Sphere (SPH) - Range -14.00 D to +14.00 D Step: 0.25 D

Cylinder (CYL) - Range: -7.00 D to 0.00 D Step: 0.25 D

Axis - Range: 0° to 180° Step: 1°

Optical & Measurement

Minimum Pupil Diameter: 2.5 mm

Vertex Distance: 19.5 mm

Patient Age Range: 5 years and above

Fixation Target: Low spatial frequency

sinusoidal grating with Gaussian envelope Measurement Time: < 5 seconds per eye

Technology: Shack-Hartmann Wavefront Sensing

Display & Connectivity

Display: 3.5” full-color touchscreen Connectivity: USB, Bluetooth

Internal Storage: Up to 400 measurements

Power & Battery

Power Source: AC 100–240 V, 50/60 Hz Battery Type:Lithium-ion, 3.6V, 6800 mAh Battery Life: Up to 12 hours (normal usage)

Physical Specs

Weight: 650 grams

Dimensions: 8.9” × 7.5” × 2.9”

Ambient Light Requirement: None (works in most lighting)

Optional Accessories

Bluetooth thermal printer
Portable examination stand

3nethra aberro, Handheld Auto Refractometer