NIDEK AL-Scan Optical Biometer
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.
NIDEK AL-Scan Optical Biometer, a cutting-edge device for precise ophthalmic measurements including axial length, corneal thickness, and more. Enhance surgical planning and outcomes with advanced biometric technology.
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.
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