Core Technology & Measurement Method

• Technology: Fourier Domain Swept-Source Optical Coherence Tomography (SS-OCT) at 1060 nm wavelength

• Corneal Measurement: Placido ring corneal topography system

• Scan Capability: Can perform ten consecutive scans per measurement without the need for realignment

Measured Parameters

Axial length (AL), anterior chamber depth (ACD), keratometry (K) over a 2.5 mm and 3.0 mm diameter, lens thickness (LT), central corneal thickness (CCT) and white-to-white (WTW) distance

Clinical Precision & Repeatability

From peer-reviewed studies comparing OA-2000 to IOLMaster:

Measurement Differences (OA-2000 vs IOLMaster):

• AL: 0.058 ± 0.094 mm lower, Keratometry flat: 0.088 ± 0.150 D lower, Keratometry steep: 0.163 ± 0.170 D lower, Keratometry mean: 0.127 ± 0.117 D lower, Corneal diameter: 0.171 ± 0.217 mm lower

Clinical Accuracy for IOL Power Calculation: IOL power accuracy within ±0.50 and ±1.00 D from target refraction: 83.6–88.6% and 100.0% respectively for OA-2000

Dense Cataract Performance

• Provides tissue penetration capable of measuring through virtually all dense cataracts

• Uses advanced Fourier domain technology for high-speed, deep tissue penetration

• Bluetooth connectivity to AL-4000 ultrasound unit for cases where optical measurement fails

Automation & User Interface

• One-shot measurement: Fast, precise, and fully automated biometry with just one touch, using advanced 3D eye-tracking technology

• Display: Large color display with built-in printer

• Connectivity: USB and LAN network capabilities

• Database: Internal IOL database with IOLCON platform integration

IOL Calculation Capabilities

• Multiple formula support: Standard formulas plus ray tracing calculations

• Toric IOL calculation with integrated Olsen formula

• Optional OKULIX and Barrett formula support

• Surgeon-specific presets for formulas and IOL models

Clinical Applications

• Pre-cataract surgery biometry

• Complex IOL power calculations

• Toric IOL planning

• Dense cataract cases (>95% success rate)

• Research applications requiring high precision measurements

The OA-2000 demonstrates excellent clinical precision with measurements that are highly repeatable and reproducible in both healthy eyes and cataractous eyes, making it suitable for demanding clinical and surgical applications.