Haag-Streit is debuting a new cornea map to accompany its Lenstar 900 optical biometer, designed to elevate the refractive cataract surgical planning process.
Let’s start with a company refresh.
While the medical device manufacturer specializing in four therapeutic areas—including ophthalmology—is based in Switzerland, its U.S. operations (Haag-Streit USA) are located in Ohio.
Among its most well-known medical devices:
- BQ900
- Eyestar 900
- Octopus 900
- Lenstar Myopia
- Imaging Module
And wasn’t there another recent launch?
Good memory! The company officially launched the METIS 900 ophthalmic microscope system in March 2025.
- Its highlighted features: A coaxial red reflex, light-emitting diode (LED) illumination, ergonomically-friendly controls, and a compact design
Check it out—and see here for other recent Haag-Streit news.
Next up: Talk about the Lenstar 900.
After first making its U.S. debut in 2008, this “all-in-one” optical biometer provides keratometry and axial biometry of the entire eye.
How does it do this? By using optical low coherence reflectometry (OCLR) to measure the axial length parameters of the eye—enabling more precise IOL prediction—as well as:
- Central corneal thickness
- This includes a reproducibility of an ~ ±2 μm
- Anterior chamber depth
- Lens thickness
And how many scans are needed to capture these?
Just a single measurement scan.
- See here for more details on its extensive biometric parameters (hint: it includes pupillometry and corneal curvature).
Focus on that precision component.
The system—which is designed with an intuitive user-interface and its automated positioning system—features a dual-zone keratometry for “highly precise measurements" of:
- K readings
- Axis orientation
- Astigmatism
And to advance these capabilities, this is where the cornea map feature comes into play.
Tell me about this new addition.
The cornea map enables the activation of a third infrared LED ring to capture an additional 16 measurement points—meaning the Lenstar can now capture a grand total of 48.
And with this acquired data: The system can calculate an axial curvature-like map of the central anterior cornea (an estimated 3 mm zone).
- Resulting in: An in-depth look at the regularity and symmetry of the astigmatism, which is then used to determine the appropriate IOL for a toric candidate.
Real quick: How are IOL calculations conducted?
That would be via the EyeSuite IOL platform, which provides IOL calculations for any patients (including toric and post-refractive cases).
Take note: This platform fully integrates into the Lensar 900 to simplify the IOL selection process.
Nice! So how else does the map advance the Lenstar?
Haag-Streit noted that it also enables simultaneous measurements of those aforementioned biometric parameters (see a few sections back for specifics)—all without the need for additional devices or steps.
The intended outcome: A cost-effective and faster solution for a more streamlined and simplified cataract surgery planning process.
Sounds like a major upgrade … so how can I access this new feature?
Starting now, the cornea map will be included in each newly installed Lenstar 900 device, according to the company.
And for existing Lenstar customers: The feature can be accessed by purchasing a license once EyeSuite version i9.17.1.0 is released.
- Contact a Haag-Streit distributor for further information on this.