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Ophthalmic / Corneal Topographer DEA520


2 in 1 Ocular Diagnostic Master Corneal Topographer

Corneal Topographer DEA520

1 Ring 3 Illuminations 9 Functions

DEA 520 is a multi-purpose corneal topographer that integrated dry eye and corneal topography analysis.


Placido Ring

Thousands of measure points - ensure more data available and accurate analysis
Smaller cone design - bigger projection area
3 Illuminations - white illumination, infrared illumination,cobalt blue illumination

9 Functions

Dry Eye Diagnosis

●Non-Invasive Tear Film Breakup Time
●Cornea Sodium Fluorescein Staining
●Non-Invasive Tear Meniscus Height
●Eyelid Margin

●Meibomian Glands Function Evaluation
●Conjunctival Redness Analysis
●Lipid Layer Thickness


●Topography Analysis

●Pupil & Corneal Diameter Measurement

Built-in computer

Integration design enables maximum treatment room utilization
Dry eye diagnosis and Topography analysis integrated
10.1″touchscreen, ease of operation


Doctor-Patient Communication

Visualized diagnosis report, easy to understand
External display connection enables real-time observation

Ergonomic Design

Switch illumination and magnification intelligently under various function modes
Compact cone, specially designed for various orbits
50°adjustable display
Auto OD/OS recognition

Clinical Application

Dry Eye Analysis
Lens Fitting
Cornea Morphology Diagnosis


Dry Eye Diagnosis

Make dry eye visualized

Non-Invasive Breakup Time

Comprehensive 7 dry eye examinations.

More than 9.6mm diameter Placido ring projection. Auto identify breakup area and analyze NIBUT intelligently.


Meibomian Glands Function Evaluation


Automatically anlalyze meibomian glands loss caused by meibomian glands dysfunction with precise and quantified diagnosis results

Auto identify and auto enhance of meibomian glands area


Automatic identification system depicts tear meniscus area and measures the tear height intelligently.


Identify and calculate percentages of conjunctival congestion and ciliary congestions and evaluate severity of eye congestion.


Lipid Layer Thickness

Observe dynamic lipid layer and distribution by video recording compared with standard templates. It’s helpful for judging MGD.


Eyelid Margin

The high resolution image supports zoom in to meet examination requirements of overall shape of eyelid margin and its slight change.

Cornea Sodium Fluorescein Staining

Specially designed built-in yellow filter, working with cobalt-blue illumination improves image contrast of cornea sodium fluorescein. Effectively increases positive rate of early corneal epithelial staining.

Corneal Topography

Sketch the contours of corneal


Lens Fitting

A simulated fluorescein image will be created based on patient’s cornea. The system will recommend several suitable lens for choose, which accelerates work flow and excludes unfit lens to save the trouble for patient to do real several fluorescein staining.

Research and develop with team SOS from EYE&ENT Hospital of Fudan University. Recommend the most precise lens based on the patient documentation.


Aberration & Simulation

Zernike wavefront aberration analysis makes plan of cataract and refractive surgeries visualized and ensures patient’s postoperative vision quality.

4 Maps

4 maps provide Sagittal Curvature,Tangential Curvature, Elevation Map, Refractive Power, and K1/K2/Km/Astig/Ecc value.





Shape Factor


Pupil & Corneal Diameter Measurement


Cases Comparison


Built-in CPUintel
Hard Disk1TB
Image Resolution2048×1536
Display10.1″ touchscreen
IlluminationWhite, Infrared, Cobalt-blue
Internet ConnectionWIFI
Printer ConnectionWIFI, USB
Power Supply100~240VAC,50/60HZ
Extension Display InterfaceDisplay Port
OS/OD RecognitionAutomatic
Chin Rest ControlElectrical
Left and Right0~94mm work range
Front and Back0~64mm work range
Up and Down0~30mm work range
LanguageChinese / English / Japanese

Numbers of Rings50 Rings
Diameter of Project Area8.8mm(43D)11mm(43D)
Radius of Curvature32.14 dpt~ 61.36 dpt (5.5mm~10.5mm) Accuracy:±0.1 dpt (±0.02mm)
Astigmatism Axis0~180°
White To White6~17mm
Pupil Diameter1~13mm
Topography FunctionSagittal CurvatureTangential CurvatureElevation MapRefractive Power
4 MapsFour Maps display
Shape FactorE, ecc, P, Q
ZernikeCorneal wavefront aberration, PSF map, MTF curve and Simulated image in different pupil diameters
Examination Result ComparisonSupport 2 results comparison and difference calculation

Dry Eye Analysis
NIBUTAutomatic analysis, tear film rupture area and trend, first break-up time and average break-up time
Tear Meniscus Height0.01~2mm
Meibomian GlandsMeibomian glands loss rate and grade
Lipid LayerTemplate match
Eye RednessConjuntival congestion percentage
Eyelid MarginSupport digital images zoom in
Ocular SurfaceBuilt-in yellow filter