What is the most common technique used to perform B-scan ultrasound?

The handheld probe is the most common technique used to perform B-scan ultrasound because it offers flexibility and ease of use during the examination. This method allows the operator to manipulate the probe to obtain various angles and views of the eye and surrounding structures, which is crucial for comprehensive imaging in a clinical setting. The handheld approach is particularly beneficial in situations where quick assessment is necessary, such as in emergency cases or when immediate imaging is required.

In contrast, the fluid-filled probe technique is less common as it involves using a probe that requires a coupling medium, which can limit the speed and convenience of the examination. Stationary ultrasonography, while useful in certain contexts, typically lacks the adaptability needed for thorough ocular scanning. The contact lens method, although valuable in specific situations, is not as widely utilized for general B-scan purposes compared to the versatility and practicality of the handheld probe. Hence, the handheld probe stands out as the preferred technique in everyday practice for conducting B-scan ultrasound.