Patients tolerated the examination well. Comparative analysis of preliminary perimetry results obtained with both methods showed high degree of identity, so the results were concluded to be comparable. By visually isolating the wearer, VR headset achieves elimination of distractions and stable light conditions for visual field testing. The headset-perimeter is compact, mobile, easily transportable, can be used in the work of visiting medical teams and for examination at home.

One of the problems of the foveated rendering technique is timely prediction of the next gaze fixation point. Visual perception is a complex stochastic process. In the paper we propose a method for the early detection of changes in fixation points by using a mathematical model to estimate the coordinates of the new gaze fixation point. The model was used to obtain the prerequisites for an eye tracker's frequency. A head mounted display with an eye tracker is also described.

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Authors examine a problem of increasing a frame rate during highload scenes rendering for virtual historical reconstruction of Bely Gorod. The reconstruction is designed to be rendered using a virtual reality headset. To improve performance, authors implemented a foveated endering technique. It allows to display in high resolution only the area of the scene that the user is currently looking at. A new gaze tracking system was developed and tested, and frame rates were compared for the Bely Gorod scene.