Figure 1.

A schematic view of the experimental setup. A crystalline lens with anterior surface facing down was positioned in the lens holder, and a microbubble was produced by a focused laser beam inside a lens. A 3.7 MHz excitation transducer was used to generate acoustic radiation force applied to a microbubble. The motion of a microbubble was tracked by two 25 MHz ultrasound transducers (T and R) – separation of transmit (T) and receive (R) transducers allowed for high (up to 1 MHz) pulse repetition frequency. In addition to ultrasound measurements, the size of the microbubble was also observed using an optical microscope.