Our institution has modern EyeCubed ultrasound by Ellex. Ultrasound is a handy diagnostic method for many eye diseases when it is impossible to make a diagnosis by a simple clinical examination. The principle of the diagnostic ultrasound use is based on the emission of high-frequency sound waves using a special probe and return signal analysis. Depending on the properties of the tissue through which the sound passes, part of the sound waves is absorbed by the tissue, a part is reflected towards the probe and a part passes further, deeper into the tissue. The computer analyzes the return sound signal, processes it and displays it in the form of a two-dimensional image on the monitor. In clinical practice, we can choose between two modes of ultrasound diagnostics. The first mode is the so-called A-scan mode or ultrasound biometry, in which different eye structures are displayed in the form of amplitudes. Acoustically denser structures have higher amplitude and vice versa. A-scan mode is primarily used when calculating the eye's axial length to calculate the power of the intraocular lens to be implanted during cataract surgery. Note that this is a practice only in very advanced and dense cataracts, where it is not possible to measure the axial length of the eye and the power of the intraocular lens using the much more accurate Wavelight BioGraph. The resolution of Ellex EyeCubed ultrasound in A-scan mode is 0.10mm. The second mode is the so-called B-scan mode, where we get a two-dimensional image of the inside of the eye based on the acoustic density of different tissues. Different tissues are shown in different shades of gray depending on the acoustic properties. B-scan is irreplaceable in eye diseases in which, due to the loss of transparency of the eye structures (primarily cataract), it is not possible to clinically see the eye's internal structures. Indications primarily include suspected retinal detachment, choroidal detachment, intraocular hemorrhages, visualization of foreign bodies, intraocular tumors, epiretinal membranes, and others. Ellex Eye Cubed in B-scan mode has the ability to take 25 shots per second, with 0.15mm resolution.