High‐resolution ultrasound imaging of the eye – a review

Abstract

This report summarizes the physics, technology and clinical application of ultrasound biomicroscopy (UBM) of the eye, in which frequencies of 35 MHz and above provide over a threefold improvement in resolution compared with conventional ophthalmic ultrasound systems. UBM allows imaging of anatomy and pathology involving the anterior segment, including regions obscured by overlying optically opaque anatomic or pathologic structures. UBM provides diagnostically significant information in conditions such as glaucoma, cysts and neoplasms, trauma and foreign bodies. UBM also can provide crucial biometric information regarding anterior segment structures, including the cornea and its constituent layers and the anterior and posterior chambers. Although UBM has now been in use for over 15 years, new technologies, including transducer arrays, pulse encoding and combination of ultrasound with light, offer the potential for significant advances in high-resolution diagnostic imaging of the eye.

Role of B-scan ocular ultrasound as an adjuvant for the clinical assessment of eyeball diseases: a pictorial essay

“…Ultrasound performed with higherfrequency (35-50 MHz) scanners may improve the visualization of the anterior chamber; however, conventional US also provides diagnostic information [7]. The ultrasound image shows small echogenic areas due to bleeding (Fig.…”

Ultrasound biomicroscopy confirmation of corneal overriding due to improper suturing of full-thickness corneal laceration

“…UBM has been used in several corneal pathologies, including edema, keratoconus, dystrophies, corneal scars, and trauma (4) . Anterior segment optical coherence tomography (AS-OCT) and Scheimpflug imaging are alternative imaging techniques that could have been used in our case.…”

Feasibility Study of the 3D Visualization at High Resolution of Intra-Cranial Rabbit Eyes With X-Ray CT Phase-Contrast Imaging

“…By comparing the limiting values of spatial resolution of the imaging techniques used in ophthalmology, 20,[23][24][25] it can be noted that the here-presented result is many times better than the majority of commonly used techniques and compete with the latest achievements in the field of optical coherence tomography of the retina. But if the OCT technique has now reached the limits in terms of spatial resolution due to the physical limitations imposed by the use of infrared light, and image quality can only evolve by the application of new improving mathematical methods, 20 the resolution of the images presented in this work can be even further increased by using higher resolution detectors.…”