3nethra bio, Optical Biometer

An optical biometer is a medical device used in ophthalmology to measure the anatomical characteristics of the eye using non-contact optical methods, most commonly optical coherence interferometry or optical low-coherence reflectometry.

Optical biometers are primarily used to calculate intraocular lens (IOL) power before cataract surgery or refractive lens exchange, ensuring the patient achieves the desired postoperative visual outcome.

1. Axial Length (AL) – The length of the eye from the front (cornea) to the retina. Crucial for IOL power calculation 
2. Keratometry (K1, K2) – Curvature of the cornea’s front surface, used to assess corneal power.
3. Anterior Chamber Depth (ACD) – Distance from the corneal endothelium to the lens.
4. Lens Thickness (LT) – Thickness of the natural lens.
5. White-to-White (WTW) – Horizontal corneal diameter.
6. Central Corneal Thickness (CCT) – Useful in some biometric formulas and for other diagnostics.
    

• Partial coherence interferometry (PCI)
• Optical low-coherence reflectometry (OLCR).
• Swept-source OCT (SS-OCT)
   

• Pre-surgical planning for:
  • Cataract surgery
  • Refractive lens exchange
  • Pediatric lens implantation
• Myopia management and axial length monitoring
• Post-refractive surgery IOL calculations (with appropriate formulas)
   

• Non-contact: More comfortable and lower risk of infection 
• Higher accuracy: Especially in axial length
• Faster and easier: Particularly for bilateral measurements.
   

3nethra Bio is an advanced optical biometer that employs low-coherence interferometry to deliver high-precision measurements of essential ocular parameters. Designed for accuracy and efficiency, it ensures precise alignment with the eye's optical axis, capturing key metrics such as:

• Axial Length (AL 
• Central Corneal Thickness (CCT)
• Corneal Curvature (K-values)
• Anterior Chamber Depth (ACD)
• Lens Thickness (LT)
• White-to-White (WTW) Distance
• Pupil Diameter
   

The device also calculates intraocular lens (IOL) power to support optimal refractive outcomes in cataract and lens replacement surgeries. Its intuitive interface and streamlined workflow improve diagnostic accuracy, facilitate confident treatment planning, and boost overall clinical productivity.

1. For Website (Short-form Version):

The 3nethra Bio is a cutting-edge optical biometer using low-coherence interferometry to measure axial length, corneal thickness and curvature, ACD, lens thickness, and more. It ensures precise IOL power calculations and enhances surgical planning with an intuitive, clinician-friendly interface. 

2. For Technical Brochure (Bullet-style):

• Optical biometer with low-coherence interferometry
• Accurate alignment with the eye's visual axis
• Measures:
  • Axial length (AL)
  • Central corneal thickness (CCT)
  • Corneal curvature (K1, K2)
  • Anterior chamber depth (ACD)
  • Lens thickness (LT)
  • White-to-white (WTW)
  • Pupil diameter
• IOL power calculation with advanced formulas
• Intuitive interface for streamlined workflow
• Enhances diagnostic precision and surgical outcomes
   

3. For Clinician Training Material:

With the 3nethra Bio, clinicians can rely on repeatable, high-resolution ocular biometry for preoperative planning. The system’s guided alignment and robust measurement suite support confident IOL selection and efficient patient workflow.

High-Precision Axial Measurements with OLCR Technology

Utilizes Optical Low Coherence Reflectometry (OLCR) to deliver sub-micron axial measurement accuracy, effectively minimizing refractive index-related errors for superior biometry performance.

Advanced Corneal Analysis with 32 Light Points

Projects 32 concentric light points onto the cornea to ensure highly accurate and repeatable curvature measurements, supporting reliable preoperative assessments.

Provides advanced analysis of:

• Axial growth trends for myopia management
• Cataract grading and surgical planning
• Strabismus screening and Kappa angle evaluation
• Assessment of visual quality metrics
   

Supports a wide range of IOL calculation formulas for personalized and precise outcomes: SRK/T, SRK II, Hoffer-Q, Hoffer-Colenbrander, Holladay 1, Haigis, Haigis-L, Binkhorst, Shammas.
 

A large, high-resolution touchscreen enables intuitive, efficient operation, streamlining the workflow in busy clinical environments.

Automatically generates and uploads PDF reports, with secure cloud storage for:

• Seamless data access
• Centralized documentation
• Easy patient record management
   

Engineered for flexibility and portability, making it ideal for diverse clinical setups, including outpatient departments, satellite clinics, and mobile eye care units.