ANTERION: Advanced IOL toolbox for complex cataract surgeries

ANTERION® from Heidelberg Engineering is a comprehensive device for optical biometry and IOL power calculation. It provides spectacular images of the anterior segment by combining swept-source OCT technology with eye tracking. The resulting high-resolution B-scan images enable precise measurements for optimal cataract and anterior segment surgery.

Read about ANTERION’s cornea data, preoperative measurements, IOL calculation methods and lens assessment to learn how the platform proves helpful in treating challenging eyes.


Figure 1: Evaluation of the same eye before and after cataract surgery.
Figure 1: Evaluation of the same eye before and after cataract surgery.


Learn why ANTERION makes a difference for challenging eyes:

Unique cornea data to assess complex geometries

ANTERION sets itself apart by providing a comprehensive set of corneal measurements derived from tomography, pachymetry and wavefront analysis. Cornea data is based on 16,640 A-scans over an 8 mm zone and details both anterior and posterior corneal surfaces. The image-based measurements can help identify irregular corneas and pathologies and facilitate optimal IOL power calculation.

Figure 2: Corneal maps detailing the anterior and posterior corneal surfaces of eyes after refractive surgery.
Figure 2: Corneal maps detailing the anterior and posterior corneal surfaces of eyes after refractive surgery.


High-precision measurements based on high-quality images

ANTERION’s clear SS-OCT images are fundamental to predictable refractive outcomes. High-resolution imaging allows precise OCT segmentation of the corneal surfaces and facilitates highly accurate preoperative measurements. Within one capture, all relevant biometric measurements are acquired: full and central corneal analysis, anterior chamber depth, lens thickness, axial length and many more.

Advanced methods for IOL power calculation

ANTERION’s spheric and toric IOL calculator library includes established IOL formulas as well as an interface to the OKULIX ray tracing application. This method utilizes corneal tomographic measurements and considers anterior chamber depth as well as lens thickness to calculate IOL power based on ray tracing the pseudophakic eye with the selected IOL model in position. In challenging cases – for example in eyes with unusual geometry or previous laser refractive surgery – ray tracing calculations combined with highly accurate measurements have been shown to provide excellent outcomes.¹

Assessment of lens position

ANTERION provides additional information for surgical planning and follow-up. Lens vault can be assessed and the visualization and location of phakic lenses, IOLs, ICLs, and previous surgical procedures can be reviewed in great detail (see Figure 1). Furthermore, accurate and reproducible angle measurements can be generated to provide full analysis of anterior chamber geometry.

Is there more?

ANTERION is more than a high-end biometer for cataract surgery. It is a multi-disciplinary imaging and measurement device that can grow to meet practice needs. Cornea and refractive surgeons, glaucoma specialists and general ophthalmic practitioners can benefit from four available Apps.

Explore the ANTERION Apps or contact your local sales representative to request a demo on ANTERION.

¹ Gjerdrum B, Gundersen KG, Lundmark PO, Aakre BM. Refractive precision of ray tracing IOL calculations based on OCT data versus traditional IOL calculation formulas based on reflectometry in patients with a history of laser vision correction for myopia. Clin Ophthalmol. 2021;15:845-857

Back to the overview