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The OCULUS Keratograph 5M

The OCULUS Keratograph 5M is an advanced corneal topographer with a built-in real keratometer and a colour camera optimized for external imaging. Unique features include examining the meibomian glands, non-invasive tear film break-up time and the tear meniscus height measurement and evaluating the lipid layer.

Topographer OCULUS Keratograph 5M

OCULUS Keratograph 5M

Easy-to-Understand Presentation

Actively integrate the Keratograph into your consultation. Many easy to understand displays support you in communication and patient education. Use your Keratograph 5M as a marketing tool to make your services transparent!

Joystick for Keratograph 5M

Installing and using the new joystick


Measurements with Placido Ring Illumination

Thousands of measuring points are used to measure the whole surface of the cornea. A white ring illumination is used for this purpose. An infrared ring illumination is also provided for analysis of the tear film to prevent glare-related reflex secretion.

Technical Data

Accuracy: ± 0.1 D
Reproducibility ± 0.1 D
Number of rings: 22
Working distance: 78 - 100 mm
Number of evaluated data points 22 000
Camera: Digital CCD camera
Light source: Placido illumination: White
Placido illumination: Infrared 880 nm
Fluorescein illumination: Blue 465 nm
Meibography: Infrared 840 nm
Tear film dynamics: White
Pupillometer illumination: Infrared 880 nm
Dimensions (W x D x H): 275 x 320 - 400 x 485 - 512 mm
Weight Measuring head: 3.2 kg (7.1 lbs)
With base: 6.1 kg (13.5 lbs)
Max. power consumption 18 W
Voltage 90 - 264 V AC
Frequency 47 - 63 Hz
Recommended computer specifications CPU Intel® Core i5-7600, 8 GB memory, 1 TB, Windows® 10 Pro
Recommended screen resolution 1920 x 1200 pixel

In acc. with the Medical Device Directive 93/42/EEC

The OCULUS QM system is certified in accordance with ISO 13485 and (EU) 2017/745 (MDR).

The OCULUS QM system is certified in accordance with ISO 13485 and (EU) 2017/745 (MDR).


 NEW Crystal TEAR Report

Find out the cause of dry eye disease quickly and reliably with the assistance of the new Crystal TEAR Report in the Keratograph 5M. Carry out a comprehensive analysis using the measurement results as a basis for your diagnosis. All results are summarized in a patient-friendly, neatly arranged printout, enabling you to combine documentation and patient education.


Bring Your Dry Eye Protocol to Life

Benefit from all the advantages of the new Crystal TEAR Report in the Keratograph 5M: efficient screening, well-founded measurement results and greater patient loyalty. With its preselection of recommendations and the option to manually adapt them, the Crystal TEAR Report allows you to draw up an effective treatment, according to the individual causes of dry eye, in the shortest time. The result: a comprehensive dry eye analysis.

Recording Made Easy

Up to 50 recordings can be carried out easily for documentation purposes. Readily understandable user tips and optimal auto-setting prior to each recording make it possible to delegate the entire measurement process. Despite the high degree of user guidance, you can directly delete faulty recordings as well as change settings and adapt the measurement sequence individually.

Excel With Your Dry Eye Diagnosis

The entire course of diagnosis is documented, providing you with an ideal basis for your treatment decisions. All necessary recordings that are required to grade the individual's dry eye state, can be viewed at the same time. Depending on the grade you obtain, you can then determine a suitable treatment plan.

Additionally, you can enter the data from other tests, such as Osmolarity, Schirmer's Test, Phenol Red Thread Test, and more.

Documentation and Patient Education

The Crystal TEAR Report surely and safely walks you through all the necessary assessment criteria that make up a comprehensive dry eye analysis. To complete the treatment plan, you can manually enter your dosage recommendations for the individual therapeutic measures on the printout. Making it an easy-to-grasp, optimal means of patient education.


The tear film is assessed using either white or infrared illumination. The new high-resolution colour camera makes even the finest of structures visible.  In addition to NIKBUT (Non-Invasive Keratograph Break-Up Time) and measurement of the meniscus tear, the TF-Scan can also make an assessment of the lipid layer and the tear film dynamics. Tear film analysis with the OCULUS Keratograph 5M is non-invasive and is conducted without any additional tools.

Assessment of the Tear Film Break-Up Time

The tear film break-up time is measured non-invasively and fully automatically. The new infrared illumination is not visible to the human eye. This prevents glare during the examination. The TF-scan presents the results in a way that is easy for you and your customers to understand.

Meniscus Tear Height - Assessment of the Tear Film Quantity

Lipid Layer
Assessment of the Interference Phenomenon

The interference colours of the lipid layer and their structure are made visible and can be recorded. The thickness of the lipid layer is assessed based on the structure and colour.

TF Dynamics - Assessment of the Particle Flow

Automatic Classification of Redness

Automatic classification of the bulbar redness. Conjunctival redness used to be assessed subjectively and depended on the examiner. The R-Scan is the first module that automatically and objectively documents and classifies the bulbar and limbal degree of redness. The R-Scan detects the blood vessels in the conjunctiva and evaluates the degree of redness. This automatic assessment spares you the time and effort of having to make manual comparisons using classification sheets.

Meibography of the Top and Bottom Eyelid

The multi-functionality of the Keratograph 5M easily and efficiently integrates difficult examinations such as meibography. The dysfunction of meibomian glands is the most frequent cause of dry eye. Morphological changes in the gland tissue are made visible using the Meibo-Scan and can be classified with the JENVIS Meibo Grading Scales.

Indispensable for:

  • Fitting multi-focal contact lenses
  • Exact determination of the treatment area for refractive surgery
  • Seamless integration into the existing Keratograph software
  • The infrared camera installed in the Keratograph delivers images of the patient’s pupil, which are used as the basis for the measurements

Different Ways of Determining Pupil Reaction:

  • Examination of the pupil reaction both with and without glare
  • Examination using two different glare stimulus powers
  • Clear presentation of the results in graphic form: pupil changes over a period of time; minimum, maximum and mean pupil diameter, incl. standard deviation
  • Comparison views possible


The Imaging Software is used to record video and image files. In addition to viewing the videos and single images by themselves, you can also compare the recordings with the simulated fluorescein-images of the measured eye.

How Does That Work?

  • Simply integrate the Imaging Software into the Keratograph software
  • Blue light-emitting diodes in the illumination beam path stimulate the fluorescein
  • Yellow filters are integrated into the observation beam path

Result: Static fluorescein-images and videos can be recorded under slit lamp conditions!

Fluorescein-image simulation comparison


The OxiMap® presents a colour map of the oxygen transmissibility of soft contact lenses based on the lens power, which is easy to understand – even for your customers!

Oxygen Transmissibility of Soft Contact Lenses Made Visible

An intact tear film and a good supply of oxygen to the cornea are an absolute necessity for wearing contact lenses comfortably. The OxiMap® presents a colour map of the oxygen transmissibility of soft contact lenses based on the lens power – which even your customers will understand!

Compare Different Soft Contact Lenses!

The OxiMap® is individually adapted based on the lens power and supports you in your consultation with the patient and helps you to choose the most suitable contact lens. New materials used for soft contact lenses provide excellent oxygen transmissibility.

OxiMap® was developed in close cooperation with JENVIS Research and the University of Applied Sciences in Jena.

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