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Haag-Streit LENSTAR LS 900 Keratometer

  • Haag-Streit LENSTAR LS 900 Keratometer
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Product Description

Haag Streit Lenstar LS 900 Optical Biometer  with a complete biometrical assessment of the patient’s eye in a single measurement procedure, including lens thickness, anterior chamber depth (lens position) and retinal thickness.

- The all in one biometer, keratometer, pachymeter, pupillometer and IOL calculator. Get up to nine measurements in one shot, including lens thickness.
- T-Cone Toric Platform
    LENSTAR’s unique measurement and planning platform for toric IOL now featuring the Barrett Toric Calculator for improved toric IOL prediction.

- The Olsen Formula for superior IOL prediction LENSTAR is the first optical biometer on the market providing accurate measurement of the lens thickness, paired with the on board Olsen IOL calculation formula LENSTAR provides premium IOL prediction for all kind of human eyes.

- Premium post refractive IOL calculation. Featuring the Shammas No-History, the Masket and the Modified Masket method, LENSTAR provides the cataract surgeon with an easy to use tool for the calculation of post refractive patients.

- EyeSuite Biometry Software
In addition to the ease of using only a single measurement, the LENSTAR® also provides a user-friendly application and navigation of the software interface. This allows even inexperienced persons to easily begin to use the device without intensive training. 

Measurements can be performed by assistants, thus improving the efficiency of the clinic.

User friendly and ergonomic:
Best measurements for optimum IOL prediction Ready for the future in IOL power calculation
Intuitive and open

Best measurements for optimum IOL prediction:
LENSTAR provides the user with a complete assessment of the human eye with the highest precision using OLCR technology. The patient fixates on the measurement beam, ensuring that all length measurements are taken on the visual optical line.


The below mentioned measurement ranges are based on the standard settings of the device for automatic measurement and analysis. 

In-vivo repeatabilities (1.SD) have been derived from data of a clinical study. This study was designed and accomplished as a prospective, non-randomized single site comparison study.

Corneal thickness (CT)                 
- Anterior chamber depth (ACD) Measurement range 300 – 800 µm
- Display resolution 1 µm
- In-vivo repeatability (1.SD) ±2.3 µm        

- Measurement range: 1.5 – 5.5 mm
- Display resolution: 0.01mm
- In-vivo repeatability (1.SD): ±0.04 mm

Lens thickness (LT)                     
- Measurement range: 0.5 – 6.5 mm
- Display resolution: 0.01 mm
- In-vivo repeatability (1.SD): ±0.08 mm

Eye length (AL):            
- Measurement range: 14 – 32 mm
- Display resolution: 0.01 mm
- In-vivo repeatability (1.SD): ±0.035 mm
- Measurement range for radius: 5 – 10.5 mm
- Display resolution: 0.01 mm
- In vivo repeatability: ±0.03 mm
- Measurement range for axis angle: 0-180°
- Display resolution: 1°
- In vivo repeatability (1.SD): ±11
White-to-white distance:
- Measurement range: 7 – 16 mm
- Display resolution0.01 mm
- In vivo repeatability (1.SD): ±0.04 mm

- Measurement range: 2 – 13 mm
- Display resolution: 0.01 m

LENSTAR LS 900  Optical Biometry Platform of the Future
- Pachymetry
- Lens Thickness
- Pupillometry
- Keratometry
- Axial Length
- Retinal Thickness
- White to White
- Eccentricity of the Visual Axis
- Improves Refractive Outcome: by eliminating the risk and liability of transcription errors.
- Improves Patient Flow by eliminating the need for separate ultrasound measurements for Lens Thickness and Pachymetry, Separate Keratometry and Pupillometry - currently measured separately.
- Improves Data Flow using a separate, external PC, for direct communication with EMR and Networks.
- Improves Measurement Precision with OLCR (Optical Low Coherence Reflectometry).
- Improves Consistency in Measurements by detection of loss of fixation.

LENSTAR Benefits:
- LENSTAR is the first optical biometer which uses the precision of OLCR (Optical Low-Coherence Reflectometry) for all its measurements, including ACD and lens thickness. OLCR is an advanced technology, similar to Time Domain OCT.

- As a biometer of the entire eye, one LENSTAR® scan consists of 16 individual full eye scans and 4 individual keratometric scans, taken on 2 concentric rings, along the patient's visual axis.

- The LENSTAR® software runs on an external PC. This minimizes costly upgrades, software crashes and hardware repairs, and allows direct communication with EMR and networks as well as auto-population of data fields from third party IOL calculators such as Holladay II, eliminating the risk and liability potential of transcription error.

- All of the standard IOL prediction formulas (Holladay I, SRK-T, Haigis and Hoffer Q) are built into the LENSTAR software with potential for future formulas to be added. Since LENSTAR® measures more parameters than current formulas allow, the system is ready to incorporate future generations of power calculations as they are developed.

- LENSTAR uses a proprietary intelligent detection system. The patient fixates on the measurement beam. This ensures all measurements are on the patient's visual axis. If the patient blinks or loses fixation, LENSTAR® detects this and resumes again when the patient's fixation returns

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