The Lenstar LS 900 is an advanced optical biometry system that uses laser interferometry to precisely measure axial length—the distance from the corneal apex to the retinal pigment epithelium (RPE). Beyond axial length, it provides a comprehensive suite of measurements essential for accurate intraocular lens (IOL) power calculation, ensuring better surgical outcomes.

Key Measurements Provided by Lenstar LS 900

✅ Axial Length – Essential for IOL power selection.
✅ Corneal Thickness – Helps assess overall corneal health.
✅ Anterior Chamber Depth – Crucial for IOL positioning.
✅ Lens Thickness – Improves accuracy in IOL calculations.
✅ Keratometry (Corneal Curvature) – Measures flat and steep meridians and axis.
✅ White-to-White Distance – Important for phakic IOL sizing.
✅ Pupil Diameter – Helps in evaluating visual function.

Clinical Accuracy & Reliability

🔹 Unmatched Precision – Intraobserver consistency of ±25 µm and interobserver variability of ±21 µm across five examiners.
🔹 Non-Contact & Painless – Optical biometry eliminates the need for immersion techniques.
🔹 Superior to Traditional Methods – Particularly effective in staphylomas, pseudophakic eyes, and silicone oil-filled eyes.

However, optical biometry may be limited by media opacities such as corneal scars, posterior subcapsular (PSC) cataracts, and vitreous hemorrhage, requiring alternative methods like immersion biometry in select cases.

Advanced Keratometry: A Step Above

Accurate keratometry is crucial for IOL power selection, as a 1D keratometry error equals a 1D IOL power error. The Lenstar outperforms other devices with its:

🔹 Dual-Zone Measurement – Measures at 2.3 mm and 1.65 mm, capturing 640 points of measurement in just five readings.
🔹 High-Precision Data Capture – Provides 32 individual keratometric readings per scan, surpassing traditional keratometers.
🔹 Clinically Proven Accuracy – Studies confirm its keratometry matches the gold standard of manual keratometry.

For the most consistent results, multiple measurements should be taken on the same device, and contact lens wearers should discontinue lens use before testing.

Seamless Integration & User-Friendly Operation

🔹 Easy to Use – Intuitive for both doctors and technicians.
🔹 Seamless EMR Integration – Works efficiently with EMA from Modernizing Medicine.
🔹 Superior Astigmatism Assessment – Provides more accurate magnitude and axis measurements compared to the Atlas topographer.

Why Choose the Lenstar LS 900?

✔️ State-of-the-Art Optical Biometry – Delivers highly precise IOL calculations.
✔️ Enhances Surgical Outcomes – Reduces post-op refractive surprises.
✔️ Comprehensive Eye Measurement System – Provides all essential parameters in a single scan.
✔️ Trusted by Surgeons – Proven results in clinical practice.

For cataract and refractive surgery centers, the Lenstar LS 900 is an outstanding investment, offering unparalleled precision, ease of use, and seamless workflow integration.