Optical Biometer
AL-Scan

Features

  • 6 clinical parameters in 10 seconds
  • 3D auto tracking and auto shot
  • Anterior segment observation with Scheimpflug imaging and double mire ring keratometry
  • Optional built-in ultrasound biometer
  • IOL power calculation and IOL constants optimization
  • Additional features with AL-Scan Viewer for NAVIS-EX
  • Optional Myopia Viewer MV-1 software for myopia management

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Detailed Information
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Detailed Information

6 clinical parameters in 10 seconds
In 10 seconds, six values for cataract surgery are measured:

– Axial length
– Corneal curvature radius
– Anterior chamber depth
– Central corneal thickness
– White-to-white distance
– Pupil size

 

In addition to cataract surgery planning, the addition of optional Myopia Viewer MV-1 software allows myopia management.

3D auto tracking and auto shot
The 3D auto tracking follows eye movements along the X-Y-Z directions to ensure accurate alignment of the eye. Once correct alignment is completed, the auto shot immediately captures the image and data.
Anterior segment observation with Scheimpflug imaging and double mire ring keratometry

The AL-Scan provides sectional lens image, pupil image, and reflected image of double mire rings projected onto the cornea.

Sectional lens image (Scheimpflug image)

Pupil image

Reflected image of double mire rings
Optional built-in ultrasound biometer
In cases where the optical biometer cannot measure an eye with an extremely dense cataract, the AL-Scan provides an optional built-in ultrasound biometer, allowing measurement of virtually any cataractous eye with a combined model. The AL-Scan requires no connection with an external ultrasound unit.

Ultrasound biometry

 

IOL power calculation and IOL constants optimization

The IOL power is automatically calculated after measurement. Calculation of a personalized IOL constant improves postoperative accuracy.

  • IOL power calculation formula on AL-Scan
    SRK, SRK II, SRK/T, Binkhorst, Hoffer Q, Holladay 1, Formula/H,
    Camellin-Calossi, Shammas-PL
  • Additional Barrett formulas available for the NAVIS-EX AL-Scan Viewer
    Barrett Universal II, Barrett True-K, Barrett Toric Calculator
Additional features with AL-Scan Viewer for NAVIS-EX* (optional)

AL-Scan Viewer is software used for viewing and working with AL-Scan data via NAVIS-EX. This function enhances the capability of the AL-Scan with additional features and increases the efficiency of any clinic.
* NAVIS-EX is optional software and is required for use of the AL-Scan Viewer.

 

Data management and IOL power calculations

The large storage capacity of the NAVIS-EX database is available for review on the AL-Scan Viewer. The basic functions of the AL-Scan can also be performed with the AL-Scan Viewer including IOL power calculations and optimization of IOL constants.

 

Toric lens assist function

Acquisition of multiple toric lens assist images allows selection of the optimal image for digitally marking the astigmatic axis. These images allow better surgical planning for accurate toric IOL alignment.

 

Recalculation of measured values

The AL-Scan Viewer allows recalculation of modified axial length, white-to-white, and pupil size data for accurate calculations.
Optional Myopia Viewer MV-1 software for myopia management

Adding the optional Myopia Viewer MV-1 software will expand your clinical services for monitoring and managing myopic progression in young patients.
Measurements over time can be monitored and compared with the growth curve* (trend data). The MV-1 software allows clinicians to evaluate progression of myopia compared to an age-matched population and extrapolate progression based on growth curves.

* Tideman JWL, Polling JR, Vingerling JR, et al. Axial length growth and the risk of developing myopia in European children. Acta Ophthalmol. 2018;96(3):301-309. doi:10.1111/aos.13603

User Testimonials

Makiko Ui, MD, Director, CS eye clinic, Japan

“Since purchasing the AL-Scan* in 2021, we have used it for measuring axial length in all our pediatric patients. Even in patients with hyperopia, the AL-Scan can show the changes in axial length. For children with a tendency towards myopia, we recommend treatment to slow the progression of myopia.
With this device, there is no air puff and no dazzling effects during measurement, enabling quick and easy data acquisition. To ensure accurate axial length measurements, we encourage children to fixate properly.
By incorporating the MV-1, the measurement results are displayed on a PC monitor, allowing parents to see the progress, which is extremely useful for patient and parent education.
I think measurement of axial length is essential for managing myopia in children because cycloplegic refraction cannot be performed at every visit during treatment.
Hence, axial length can provide important clinical information on patient progress during treatment.”

 

*The AL-Scan and AL-Scan M belong to the same series of devices and have the same operability for axial length measurement.

NOTE

The availability of products differs from country to country depending on the status of approval.
Specifications and design are subject to change without notice.

Product/model name
OPTICAL BIOMETER AL-Scan