But when we need to revert back to using the A-scan ultrasound to measure the axial length, operator experience is far more critical in order to get a precise measurement. Figure 1.

Because the A-scan ultrasound can be “fooled” by tilted discs or by posterior staphyloma, ... B-scan biometry helps to locate the macula in highly myopic patients scheduled for clear lens ...

To assess the agreement of the optical low-coherence reflectometry (OLCR) device LENSTAR LS900 with partial coherence interferometry (PCI) device IOLMaster and applanation and immersion ultrasound ...

There are two parts to an eye and orbit ultrasound. The A-scan ultrasound takes measurements of your eye. The B-scan allows the doctor to see the structures in the back of your eye.