Biometry frequently asked questions

You will find below answers to a wide range of questions relating to the Haag-Streit Lenstar 900 and Eyestar 900 biometers, on topics such as; the addition of toric planning software, the ability to handle dense cataract patients and how the system communicates with practice management software. 

If you have a query which is not answered on this page then please call our customer services team on 01279) 883720 or you can contact us via the button below.

Expand the questions below to find out more


For information on how to do this, please see the video on the HS-UK YouTube channel.


Yes, it does. The PC needs to be on your network and you will need to check with the third party EMR software supplier to see if any fees may apply.


The cost of a Lenstar will depend on your needs and what optional additions you might require. For a full quotation, please contact our customer services team on 01279 883720 or email sales.uk@haag-streit.com.


The Lenstar features dual zone keratometry as standard and T-Cone topography for precise astigmatism and axis measurement in an additional T-Cone module. Further information can be found on this here.


Lenstar PRO comes with toric planning software, an intuitive tool for toric interventions. For further information, please visit the HS-UK dedicated Lenstar webpage.


The Lenstar automatically enables Dense Cataract Measurement (DCM) mode and has a very high penetration rate with dense cataracts. Clinical studies to support this are available to view at https://pubmed.ncbi.nlm.nih.gov/26210047/


Yes, it does. Eyestar provides Class A topography covering up to 12mm of the anterior and posterior cornea to improve surgical planning. Inclusion of posterior cornea measurements has the potential to provide more accurate IOL calculation particularly for astigmatic and post-refractive patients. Independent assessment of the posterior cornea with ectasia maps may enable earlier detection of cornea disorders.


Eyestar provides comprehensive tools to determine your patient's suitability for premium IOLs. This includes front and back surface corneal topography, assessment of lens tilt and Zernike analysis of the anterior cornea wavefront aberrations. 


Eyestar with EyeSuite is fully networkable with your own practice network to allow access to measurements from any workstation. EyeSuite also works with DICOM standard to produce reports such as e-PDF or multi-frame color images which can be viewed by any device. 


The cost of an Eyestar will depend on your needs and what optional additions you might require. For a full quotation, please contact our customer services team on 01279 883720 or email sales.uk@haag-streit.com.


The HS-UK Service Department has a comprehensive range of service contract options available for your Lenstar or Eyestar biometer, as well as ad-hoc repair solutions in response to a breakdown or faulty equipment. As the authorised UK service agent of the Haag-Streit Lenstar, we use only specialist manufacturer tools to check for free and correct movement of all axes, carry out a complete measurement check and a full polarisation calibration. Click here to find out more about the HS-UK Service Division and taking out a service contract.