Ultrasound biometry of the eye is a sonographic technique used to measure the size of the eyeball and its individual structures, to determine various remote parameters inside the eye. It is carried out, if necessary, to differentiate the false and true forms of eno- and exophthalmos, to exclude the swelling of the lens, to clarify the form of glaucoma, to identify the progression of myopia and to evaluate the results of its surgical treatment. Ultrasound biometrics is an integral part of the preoperative examination when planning an operation with the installation of an intraocular lens, laser or surgical vision correction. The study can be carried out in A- or AB-scan mode. The cost depends on the objectives of the study and the selected mode.