For experimental research of physical processes in liquids and gases can be used the method of laser refractography [1] consisting in probe the medium of interest with structured laser radiation, record the radiation passing through the medium with a digital camera, and process with the aid of a computer the refraction patterns captured with a view to finding out the properties of the medium. The mathematical modeling of the refraction patterns (refractograms) obtained by probing the medium under study with a structured laser radiation is fundamental to the quantitative diagnostics. The algorithm for calculating the laser refractograms based on the solution of the wave equation was developed and realized in the programming environment Delphi. The typical laser refractogramms are shown.