Haag-Streit Lenstar 900 uses optical low coherence reflectometry (OLCR) for measurement of the axial length parameters of the eye. This is the basis for excellent IOL prediction. It was the first optical biometer to capture all relevant axial dimensions of the eye to take full advantage of latest generation IOL prediction methods. Additionally, the Lenstar 900 measures a wide range of useful biometric parameters, including pupillometry, corneal curvature, white-to-white, and more.

The Lenstar 900’s dual zone keratometry provides highly precise, gold standard measurement of keratometry, astigmatism, and axis orientation. The optional T-cone further extends Lenstar 900 to offer true 11-ring Placido topography of the central 6mm optical zone. This supports identification of irregular astigmatism and allows double checking on the axis location, both enabling well-informed IOL selection and increased safety of toric IOL surgery.