D.A. Usanov - Dr.Sc. (Phys.-Math.), Professor, Head of the Department of Solid State Physics, Saratov State University n.a. N.G. Chernyshevsky. E-mail: UsanovDA@info.sgu.ru
A.V. Skripal - Dr.Sc. (Phys.-Math.), Professor, Head of the Department of Medical Physics, Saratov State University n.a. N.G. Chernyshevsky. E-mail: skripalav@info.sgu.ru
T.B. Usanova - Ph.D. (Med.), Doctor, Children's Department of Ophthalmology Clinic Saratov State Medical University n.a. V.I. Razumovsky

The influence of the eye muscles training of patients with squint using the methods of functional videooculography have been investigated. To describe the changes in the coordinates of the center of gravity of the eyeball over time in the presence of squint it has been proposed to use the differential equation describing the like Hooke's law, which is completed by a term, showing the difference of the elastic properties of the system for the opposite directions of motion of the eyeball. It has been shown that even single training for 5 min reduces the basic parameters characterizing the deviation from the norm and the decrease in asymmetry at the eye movement. Parameters measured in 15 minutes after a single training showed not full return to the initial values in the asymmetry of eye movements at a squint. Observed regularities in the motion of the eyeball at a squint before and after training were tested on the patients who have undergone training, including 5 minute training for 5 days. The proposed model allows to quantify the nature of the condition of the eye muscles and predict the dynamics of the squint treatment.