The measurement of the axial length of the eye through an A-scan is necessary for placing intraocular lens (IOL, artificial lens) during a cataract surgery. It may also be used to assess vision abnormalities of the eye and other diseases involving the eye such as tumors. B-scan. B-scan is considered the brightness scan.

Oct 4, 2024 · By providing detailed information about the anterior chamber depth, angle structures, and IOL placement, B-Scan technology enables surgeons to achieve precise IOL centration and alignment. This is crucial for minimizing postoperative refractive errors and enhancing visual quality for patients.

B-scan, or brightness scan, is another method used for ocular assessment via ultrasound. It can be performed directly on the anesthetized eye. In cases of trauma or in children, B-scan can be performed over the eyelid with coupling jelly.

VuPad's superior UBM and B-scan image quality with Enhanced Focus Rendering™ and ultra high resolution touch screen allows you to capture both crisp still images and record video that can be carefully reviewed frame-by-frame.

Sep 18, 2013 · Two types of devices, A-scan and B-scan, are used diagnostically. A-scan ultrasound refers to a one dimensional amplitude modulation scan. It is most commonly used for measurement of axial length (AL), which is critical for intraocular lens (IOL) calculations prior to cataract surgery.

On B-scan, it is seen as a lenticular-shaped mass arising from the choroid. Ultrasonography is used to assess scleral erosions and extraocular extension into orbital fat. Some tumors have a collar-button or mushroom shape.

Aug 10, 2022 · B-scan ultrasonography is an important adjuvant for the clinical assessment of various ocular and orbital diseases. With understanding of the indications for ultrasonography and proper...

Sep 1, 2005 · The high-resolution A/B-scan may include four modes: 10 MHz globe/orbit B-scan, 20 MHz anterior B-scan, biometry A-scan with multiple IOL formulae, and standardized diagnostic A-scan. Tumor vascularity and vitreo-macular traction are routinely detected.

Apr 25, 2017 · Its 40 MHz UBM B-Scan mode delivers accurate measurement and evaluation of the iris, angle and cilliary body, including sulcus-to-sulcus (ICL sizing) and IOL haptic placement, while the 10 MHz Posterior B-Scan mode allows practitioners views of the retina, choroid and sclera, as well as the vitreo retinal junction.

B-scan is a non-invasive and painless eye exam that only takes a few minutes. It is particularly helpful in cases where it is challenging for the doctor to examine the patient’s eyes using routine eye tests.