With the immersion A-scan technique, the probe tip does not come into contact with the cornea. Instead, the ultrasound beam is coupled to the eye through fluid. Because there is no corneal …

2011年1月27日 · A-scan ultrasonography remains the standard technique for measuring axial length in IOL power calculation. In this series of videos, Sandra Frazier Byrne discusses the …

By the applanation biometry method, an ultrasound probe is placed directly on the cornea, which slightly indents the surface. More desirable, by the immersion technique the ultrasound probe …

2023年9月3日 · There are different techniques for taking measurements, including contact probes, immersion, and optical biometry. Accurate measurements require using the proper …

A-Scan Eliminate corneal compression and get accurate measurements – watch this video for instruction in performing immersion A-scan technique UBM and Glaucoma Management

1. Insert probe through the hole on the top of the immersion shell. Do not push the probe past the scored line. 2. Gently twist the screw on the side of the shell, locking the probe into position. …

Standard Accutome immersion shells are needed for accurate immersion biometry when using any A-Scan unit. Clear shell for improved visibility and contains two sight lines, one for probe …

The A-scan equipment determines the correct Prager Shell® model needed for accurate immersion biometry. Each Prager Shell® model is individually designed according to the A …

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 …

2 天之前 · A, In immersion ultrasonography, the probe is immersed in the solution, placing it away from the cornea. B, Prager shell for immersion A-scan. C, Ultrasound probe and Kohn shell. D, …