MediWorks AL550 Optical Biometer for Myopia

Description

The MediWorks AL550 is an advanced optical biometer developed for comprehensive myopia management in children and adolescents. It combines 1,060 nm Optical Low-Coherence Reflectometry with 50-ring Placido corneal topography to obtain ocular biometry and anterior corneal measurements in a single examination.

Its long 1,060 nm wavelength supports reliable axial biometry, while the Placido system analyzes up to 125,600 points across the anterior corneal surface. The instrument can obtain up to 21 parameters during one measurement, including axial length, corneal curvature, anterior chamber depth, central corneal thickness, lens thickness, white-to-white distance and pupil diameter.

The AL550 provides axial-length and AL/CR ratio trend curves that can be compared with age- and sex-specific percentile references for European and Asian populations. These functions help professionals document changes over time, evaluate the response to myopia-control strategies and communicate progression information to patients and their families.

For orthokeratology, the system supplies flat and steep keratometry, astigmatism, corneal eccentricity and sagittal-height information. It can simulate lens fitting and generate tangential-curvature difference maps to compare the cornea before and after lens wear.

The AL550 also provides anterior corneal wavefront-aberration data up to the eighth Zernike order, visual-quality simulations and corneal maps with indices that support keratoconus screening.

Automatic XYZ tracking, autofocus, rapid capture, automatic right/left eye recognition and voice prompts simplify operation and help reduce operator dependence.

Key Features

Non-contact optical biometry
1,060 nm OLCR technology
Designed for children and adolescents
Measurement of axial length and AL/CR ratio
Myopia-progression trend curves
European and Asian population references
Age- and sex-specific percentile comparisons
Documentation of myopia-control interventions
50-ring Placido corneal topography
125,600 corneal analysis points
18,000 measured points
Up to 21 parameters in one measurement
Orthokeratology trial-lens selection support
Simulated orthokeratology fitting
Pre- and post-treatment difference maps
Wavefront-aberration analysis
Visual-quality simulation
Keratoconus screening
Automatic XYZ tracking and focus
Rapid image capture
Automatic OD/OS recognition
Voice-guided operation
Integrated 10.1-inch touchscreen
PDF and image export through USB or network

Clinical Functions

Myopia Progression Monitoring

Axial-length measurement
Axial length/corneal radius ratio
Chronological axial-length variation
Myopia and high-myopia probability curves
Comparison with population percentiles
Recording of myopia-control interventions
Evaluation of changes during follow-up

Orthokeratology Fitting

Flat and steep keratometry
Corneal astigmatism
Flat and steep eccentricity
Corneal sagittal-height difference
Trial-lens selection support
Simulated fluorescence fitting
Tangential difference maps before and after lens wear

Wavefront and Visual-Quality Analysis

Anterior corneal Zernike aberrations up to eighth order
Analysis diameter up to 12 mm
Retinal image simulation
Point Spread Function
Strehl ratio
Modulation Transfer Function

Keratoconus Screening

Anterior sagittal-curvature maps
Corneal elevation maps
Keratoconus indices
Corneal-morphology evaluation
Support for early screening of keratoconus and marginal degeneration

Technical Specifications

Specification	Details
Measurement principle	Optical Low-Coherence Reflectometry
Biometry wavelength	1,060 nm
Keratoscopic cone	50-ring Placido
Analyzed points	125,600
Measured points	18,000
Corneal coverage	9.8 mm
Dioptric power range	32.14–61.36 D
Dioptric accuracy	±0.1 D
Focus mode	One-touch XYZ autofocus and tracking
OD/OS recognition	Automatic
Monitor	10.1-inch touchscreen
Illumination	Red and infrared
Database	Internal
Axial-length range	0–40 mm
Axial-length tolerance	±10 µm
Axial-length resolution	1 µm
Corneal-thickness range	0.2–1.2 mm
Corneal-thickness tolerance	±10 µm
Anterior chamber depth	0.7–8 mm
ACD tolerance	±10 µm
Lens-thickness range	1.5–6.5 mm
Lens-thickness tolerance	±10 µm
White-to-white range	8–16 mm
White-to-white tolerance	±0.1 mm
Pupil-diameter range	1–13 mm
Corneal radius of curvature	5.5–10.5 mm
Curvature-radius accuracy	±0.02 mm
Axis range	0–180°
Power supply	AC 100–240 V, 50/60 Hz
Power consumption	100 VA
Operating temperature	+5 to +40 °C
Relative humidity	≤80%, non-condensing
Atmospheric pressure	800–1,060 hPa
Dimensions	307 W × 487 L × 577 H mm
Weight	Approximately 21 kg
Operating system	Linux
Internal storage	1 TB
Export options	PDF or image to USB or network folder
Printer compatibility	USB and network printers
Manufacturer	Shanghai MediWorks Precision Instruments Co., Ltd.

Recommended Applications

Pediatric myopia management
Axial-length monitoring
Evaluation of myopia-control treatments
Orthokeratology lens fitting
Contact lens practices
Corneal topography
Keratoconus screening
Wavefront-aberration analysis
Visual-quality assessment
Patient and family education
Longitudinal clinical documentation

System Configuration

A typical configuration includes the AL550 optical biometer, integrated touchscreen, internal database, analysis software and operating accessories. Included components and software modules may vary by region and configuration; confirm the exact package before ordering.

Important Note

The AL550 is intended for use by qualified eye-care professionals. Its progression curves, probabilities, classifications and fitting simulations provide clinical decision support and must be interpreted with the patient’s complete ophthalmic examination.