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NIDEK AL-Scan Optical Biometer Cornea & Cataract

$4,825.00-38% OFF

NIDEK AL-Scan OPTICAL BIOMETER is a measuring instrument capable of measuring in a single unit all the values ​​necessary to calculate the power of an IOL for cataract surgery, such as the axial length, the radius of corneal curvature, and the depth of the anterior chamber.

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NIDEK AL-Scan OPTICAL BIOMETER is a measuring instrument capable of measuring in a single unit all the values ​​necessary to calculate the power of an IOL for cataract surgery, such as the axial length, the radius of corneal curvature, and the depth of the anterior chamber.

All these measurements are made in succession with a non-contact optical measurement technique. It also features an optional A-scan probe to scan axial length with an ultrasonic measurement feature that touches the probe to the cornea should the optical measurement fail. In addition, it is possible to create an image of the anterior segment with the corneal meridians marked on it to be used as a reference for implanting a toric IOL.

The length, width, and curvature of the cornea and anterior chamber depth can be measured using Optical biometers technology. This information is usually used before refractive or cataract surgery to determine the intraocular lens (IOL) power a patient requires.

The AL-Scan is also equipped with a function that allows you to calculate the power of an IOL using the values ​​obtained from the measurement, such as the axial length.

Refractive results after cataract surgery using AL-Scan for intraocular lens power calculation.

We found that the refractive and visual outcomes obtained after cataract surgery using Nidek AL-Scan were comparable in eyes implanted with Eyecryl Plus HSAS600 IOL. The refractive results after AL-Scan were similar to benchmarks for recent cataract surgery. However, prospectively designed studies are needed to describe the precise quantification (even if not clinically significant) and its direction (myopic or hypermetropic) difference in IOL power predicted by these two biometers for a given IOL.

Nidek AL-Scan Optical Biometer Features:

  • axle length
  • corneal radius
  • Anterior Chamber Depth
  • Central cornea thickness
  • white-to-white
  • Pupil diameter
  • 10 seconds to measure six values
  • 3-D auto tracking and auto shot
  • Ability to measure eyes with even dense cataracts
  • Optional built-in ultrasound biometer
  • Anterior segment observation with imaging of lens, pupil, and double mire rings
  • IOL calculation with its measured values
  • Additional features with AL-Scan Viewer for NAVIS-EX
  • 3D auto-tracking and “auto shot.”
  • Schema plug image of the anterior chamber of the eye
  • Keratometry utilizing double-ring measurement
  • Optionally expandable with integrated a-scan
  • Various modern IOL formulas are available
  • IOL power calculation formula on AL-Scan
  • SRK, SRK II, SRK/T, Binkhorst, Hoffer Q, Holladay 1, Haigis, Camellin-Calossi, Shammas-PL
  • Additional Barrett Formulas for NAVIS-EX AL-Scan Viewer Barrett Universal II, Barrett True-K, Barrett Toric Calculator; Navis-Ex software

AL-Scan Specifications

Optical measurement

  • Axial length Measurement Range 14 to 40mm
  • Display increments 0.01mm
  • Measurement method Low-coherence interferometry (LCI)
  • Corneal curvature radius Measurement Range 5.00 to 13.00 mm
  • Display increments 0.01 mm
  • Anterior chamber depth Measurement Range 1.5 to 6.5 mm
  • Display increments 0.01 mm
  • Central corneal thickness Measurement Range 250 to 1,300 µm
  • Display increments 1 µm
  • White-to-white distance Measurement Range 7 to 14 mm
  • Display increments 0.1 mm
  • Pupil size Measurement Range 1 to 10 mm
  • Display increments 0.1 mm

Ultrasonic measurement

  • Axial length Measurement Range 12 to 40 mm
  • Display increments 0.01 mm
  • Corneal thickness Measurement Range 200 to 1,300 µm
  • Display increments 1 µm
  • IOL power calculation formula SRK, SRK II, SRK/T, Binkhorst, Hoffer Q, Holladay 1,
  • Conventional Haigis, Camellin-Calossi
  • Camellin-Calossi, Shammas PL
  • Post-LASIK X-Y-Z directions
  • Auto tracking Available
  • Auto shot Tiltable 8.4-inch color LCD touch screen
  • Display Thermal line printer with the automatic paper cutter
  • Printer LAN, USB
  • Interface AC 100 to 240 V
  • Power supply 50/60 Hz
  • 100 VA
  • Power consumption 283 (W) x 504 (D) x 457 (H) mm / 21 kg
  • Dimensions/Mass 11.1 (W) x 19.8 (D) x 18.0 (H)” / 46 lbs.
  • AL-Scan Viewer for NAVIS-EX*
  • IOL calculation formula
  • Conventional SRK, SRK II, SRK/T, Binkhorst, Hoffer Q, Holladay 1, Haigis,
  • Camellin-Calossi, Barrett Universal II
  • Post-LASIK Camellin-Calossi, Shammas-PL, Barrett True-K
  • Toric calculator Barrett Toric Calculator
  • Additional features
  • IOL registration Maximum data entry for 100 IOLs
  • Surgeon registration Maximum of 50 Surgeons
  • Surgeon-specific constant Available optimization
  • Table Electrical Table
  • External PC Computer Yes, Included
  • Printer Color
  • UPS 2 KVA

NIDEK has produced a state-of-the-art machine designed and manufactured with precision, clinical competence, and ergonomic features. It enables uncomplicated measurement of six clinical parameters: corneal curvature radius, central corneal thickness, axial length, white-to-white distance, anterior chamber depth, and pupil size.

Using the NIDEK AL-Scan, these foundational elements, crucial for successful cataract surgery, can be executed in 10 seconds.

In optometry, measuring the axial length has traditionally not been given much attention; however, the increase in cases of myopia refractive conditions has changed dramatically over the years. Myopia can cause serious long-term health ramifications, including myopic macular degeneration, open-angle glaucoma, retinal detachment, and so on.

The introduction of the NIDEK’s AL-Scan optical biometer gives quick and easy measurements, essential for clinical efficiency and keeping in mind the patient’s well-being.

NIDEK’s 3-D enhancing auto tracking and auto shot produce precise measurements allowing for increased versatility for the machine’s operator. Along with ease of using the device and overall comfort.

Given these features, let us dive into more of their details below:

Anterior Segment Observation


The AL-Scan’s powerful image-scanning tools produce excellent sectional lens images, reflected images of double mire rings, and clear pupil images. These are then extended into the cornea, making the anterior segment visible to the machine operating.

  • The sectional lens image helps assess the severe condition of the cataract.
  • The pupil image helps assess multifocal Intraocular Lens (IOL) when scanning patients with myopia.
  • The reflected image of the double rings helps detect anomalies on the corneal surface.

3-D Auto Tracking and Auto Shot

The AL-Scan of NIDEK has an in-built 3-D auto-tracking technology that is easy to use. This is because the device has an innate sense of movement that reduces the time spent for any operator or user to learn how to operate it.

It keeps track of eye movements within the X-Y-Z planes to ensure maximum eye alignment accuracy. The device automatically takes the eye’s image once the alignment is corrected.

Overall, the 3-D auto tracking and auto shot give the operator total ease, comfort, and accuracy when the measurement is needed.

Assist in toric IOL alignment

The AL-Scan, as mentioned above, has a powerful image-sensing tool built within the framework of the machine. With this, it can draw lines on any eye surface or landmark and then estimate the angle. The toric IOL alignment process is highly crucial in the operations room; therefore, the ability of the AL-Scan to draw lines and angles on the eye’s image truly gives an additional boost for the correct procedures and calculations required.

Measure Eyes with Serious Cataract

The AL-Scan’s advanced algorithm measurements can detect even such signals when it comes to extreme or even abnormal cases of patients possessing dense cataracts. This is executed by the ability to enhance their signal-to-noise ratio. It means that the device can lower the noise while increasing the signal emanating from its scanner, thus measuring all types of cataracts.

Optional Built-in Ultrasound Biometer

In rare cases, if the AL-Scan’s optical bio-meter cannot detect and measure an eye that possesses an exceptionally dense cataract, it has an alternative built-in ultrasound bio-meter. This secondary ability enables the measurement of any cataractous eye condition.

The benefit this possesses is virtually never-ending as it cuts the time spent for patients to move to another device or another operating room.

Its built-in ultrasound unit also indicates the non-requirement of an external ultrasound device which cuts back on costs.

IOL Calculation with Its Measured Values

The AL-Scan has another ability built into its system. It can compute up to eight different IOL calculation formulas within its software device. After completing all assessments and computations, the IOL power is calculated using the device’s measured data that is stored within the system’s memory.

IOL Constants Optimization

The AL-Scan can enhance the IOL constants in other computations by statistically calculating with the post-operative refractive power. The IOL constants optimization improves and assists in all forms of post-operative accuracy.

AL-Scan viewer for NAVIS-EX (an additional feature)

All the data collected from the AL-Scan and other NIDEK diagnostic devices are centrally stored in a database. This is known as the NAVIS-EX software that files or stores images from all NIDEK devices.

The NAVIS-EX works along with the AL-Scan viewer, another software tool used for viewing and working with AL-Scan data. This ability is made to safely store all the data collected from diagnostics, which can be used for future reference.

In conclusion

NIDEK, which is a Japanese company, is among the leaders in the manufacturing of medical devices. All the devices and equipment in their catalog are made with the utmost care and thought for the user. You can be assured that whatever you receive from them is top-of-the-line quality.

It is immeasurable when talking about the aptitude and prowess of the AL-Scan Optical bio-meter by NIDEK. It has been equipped and enhanced with all the latest, ultra-modern abilities that a machine such as this can possess. This is why surgeons in optometry trust this device to do complicated and delicate tasks with great success.

It is safely assumed that the AL-Scan is among the best available devices. The company that produces this device also has excellent services post-purchase to clear any doubts or questions that may arise.

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