Ophthalmic AB Scan refers to the combination of A-scan and B-scan. They use ultrasound principles to examine the eyeball and orbital structures and are one of the most important imaging tools in ophthalmology.
A-scan: Primarily used for precision measurements. It displays the echo of the ultrasound as a vertical crest, and by measuring the distance between the crests, the doctor can accurately calculate key data such as axial length, anterior chamber depth, lens thickness, etc. These data are the core basis for calculating intraocular lens power before cataract surgery.
B-scan: Primarily used for morphological diagnosis. It generates a two-dimensional fan-shaped cross-sectional image, which can visually display the structures and lesions inside the eyeball and orbit, such as the vitreous, retina, optic nerve, etc.
Specifications:
A Scan
- 10MHz with Fixation Red Light
- Resolution: 0.01mm
- Accuracy: ±0.1mm
- Measuring Range: 15-40mm
- Measuring Types: ACD, Lens, Vitreous body, AL
- Measuring Method: Contact and Immersion
- Modes: Support Normal, Cataract, Aphakic and Special eye model
- IOL formulas: SRK-T, SRK-I, BINKHORST, HOLLADAY, HOFFER-Q, HAIGIS.
- Save up to 100 group of results
B Scan
- 10MHz probe, 10 frames/sec
- Scanning Angle: 53°
- Gain: 0-120dB adjustable, steps manually adjustable TGC
- Distance, circumference, area, volume and angle measurement
- Pseudo-color: 8 kinds
- Cine Loop:128 frames, measurement available
- Post processing: 8 kinds
Clinical Application:
A-scan: calculation of intraocular lens power before cataract surgery; Diagnosis of diseases related to the eye axis.
B-scan: Diagnosis of retinal detachment, vitreous hemorrhage/opacity, intraocular tumors, intraocular foreign bodies, orbital lesions, etc.
Inspection Process and Precautions
You usually need to lie on your back during the test. During A-ultrasound examination, the probe will slightly touch the anesthetized surface of the eyeball. During ultrasound, the probe will be applied with a couplant and placed on the skin of the eyelid and sliding, and the doctor will ask you to turn your eyeballs in different directions to observe from multiple angles.
Ophthalmic AB scan is a non-invasive, radiation-free examination method. The surface anesthetic used in A-ultrasound is a routine ophthalmic procedure and has high safety. Except for a slight cooling sensation when applying anesthetic, the examination process itself is painless. The ultrasound probe may feel a slight touch when it slides over the eyelids.
More Features of ODU-5:
Built-in 16GB D disk can store data, images and reports
USB Support U disk, software upgrade and one-key storage
DICOM 3.0 Network port makes data transmission easily
The system comes with simple, practical, easy-to-work software to print and manage data
Report-print, screen copy, IOL report, case reports with images
Net weight of the complete device: 4.6kgs, easy to carry
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