The OCULUS Keratograph 5M

The OCULUS Keratograph 5M is an advanced corneal topographer with a built-in real keratometer and a color 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.



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 5MNew Joystick for Keratograph 5M: Now with Release Function




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.







Measurements with Light Emitting Diodes

The perfect illumination has been integrated for every function of the Keratograph 5M: White diodes for the tear film dynamics, blue diodes for fluo-images, infrared diodes for Meibography.







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 RAM, 1 TB, Windows® 10 Pro
Recommended screen resolution 1920 x 1200 pixel


 NEW  JENVIS Pro Dry Eye Report: Your Professional Dry Eye Assistant

Find the cause of dry eye syndrome quickly and reliably. The new JENVIS Pro Dry Eye Report in the Keratograph 5M will help you as you go along. Perform a comprehensive screening, using the measuring results as a basis for diagnosing dry eye syndrome. All results are documented in accordance with the Medical Products Law and summarized for your patient in a neat and easily understandable printout.


JENVIS Pro Dry Eye Software – The Dry Eye Analysis Tool

Make use of all the advantages of the new JENVIS Pro Dry Eye Report in the Keratograph 5M: efficient screening, well-founded measurement results and greater patient loyalty.

Screening for dry eye syndrome should be a routine part of every refraction.

Screening for a quick overview

The four-part screening test quickly and accurately reveals abnormalities in tear film quantity and quality. This 5-minute screening should be carried out routinely before every refraction. The JENVIS Pro tear film screening routine includes measurement of the tear meniscus height, tear film break-up time, bulbar redness and a short questionnaire. Make a quick and easy decision whether your patient has dry eye symptoms.


Individualized – impressive and complete

The JENVIS Pro Dry Eye Report provides you with a fail-safe test sequence covering all the assessment criteria required for a comprehensive analysis for dry eye syndrome. It provides you with useful hints and optimized, predefined settings to support you in your measurements, enabling you to perform a quick and efficient analysis for dry eye syndrome and document your anterior segment findings. Get equipped to give your patients specific advice for easing their dry eye symptoms.


Follow-up – retain customers by monitoring their success

You want to know whether your treatment recommendations have been successful? Then use the follow-up function with its setting options for characterizing the initial cause. This will enable you successfully document improvements in your patients‘ tear film condition.

Regular check-ups will make you the go-to specialist for your patients.



The tear film is assessed using either white or infrared illumination. The new high-resolution color 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.

NIKBUT - Assessment of the Tear Film Break-Up Time

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

Meniscus Tear Height
Assessment of the Tear Film Quantity

The height of the tear meniscus can be precisely measured with an integrated ruler and various magnification options, and its development along the edge of the bottom lid can be assessed. The results are saved to the patient file.




Lipid Layer - Assessment of the Interference Phenomenon

Lipid Layer
Assessment of the Interference Phenomenon

The interference colors 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 color.





TF Dynamics - Assessment of the Particle Flow

TF Dynamics
Assessment of the Particle Flow

The video recording, with up to 32 frames per second, enables the observation of the tear film particle flow, from which conclusions regarding the viscosity of the tear film can be drawn.




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.

  • 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.

  • 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 – recording – with various pre-settings



Fluorescein-image simulation comparison


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

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 color map of the oxygen transmissibility of soft contact lenses based on the lens power – which even your customers will understand!




Oxygen transmissibility for a soft contact lens with the spherical power of -3.0dpt (left)/-6.0dpt (right)



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.






There are no reviews yet.

Be the first to review “The OCULUS Keratograph 5M”

Your email address will not be published. Required fields are marked *