What is the typical frequency range for ultrasound transducers used in ocular applications?

The typical frequency range for ultrasound transducers used in ocular applications is from 10 to 20 MHz. This frequency range is optimal for ocular imaging because higher frequencies provide better resolution of the small structures within the eye, such as the cornea, lens, retina, and optic nerve.

In ocular ultrasonography, a higher frequency transducer allows for detailed visualization and assessment of these delicate structures, making it easier to identify pathologies such as posterior vitreous detachment, retinal detachment, and tumors. Transducers operating within the 10 to 20 MHz range strike a balance between image resolution and penetration depth, which is crucial for clear identification of intraocular conditions.

While frequencies below 10 MHz might penetrate deeper into tissues more effectively, they do not provide the same level of resolution needed for the fine structures of the eye. Frequencies above 20 MHz can enhance resolution further, but the decreased penetration limits their utility in ocular applications, as important deeper structures may be obscured. This practical use of 10 to 20 MHz frequencies in clinical settings aligns with the needs for precision in ocular diagnostics.